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$Wetenschap - \Nijverheid- Handel$

166 clear golden yellow colour, with a diffuse minium-red pigment on the back, forming slight ramifications on each side of the segments. Length of adult female 4 mm. /iVwr/-.s'.-~-This species was established in the year 1879 by Mr. Budde- Lund from some specimens found in a collection of Trichoniscus pusillus from the neighbourhood of Copenhagen. The specific name is somewhat inappropriate, since it is only specimens that have been preserved in alcohol for some time that exhibit a white colour, whereas the animal in a fresh state is distinguished by a very pro- nounced golden yellow hue, changing to reddish orange. Mr. Budde-Lund has identified the Trichoniscus Lcydigi of Weber with the present species; but this seems to me inadmissible, since Dr. Weber expressly indicates the colour of the living animal to be a pure white, and, moreover, absolutely denies the existence of eyes, which in the present species are easily observable both in fresh and preserved specimens. Nor does the habitus figure he gives of his form agree exactly with the present species, and the detail-figures subsequently given by that author also exhibit some well-marked differences, while yet showing the 2 species to be very nearly allied. Occurrence. I have met with this form in 3 different places in the neighbourhood of Christiania, but in none of them in any abundance. In all 3 localities it was found on the lower side of stones deeply imbedded in the soft ground. Its motions are very slow, and it is thereby markedly distinguished from the species of the genus Trichoniscus, which are rather active animals. During its slow creeping it winds its flexible body about in a most peculiar manner, and may thus at first sight easily be mistaken for a little worm. Distribution. Denmark. (itii. a. Haplophthalmus, Schobi, isoo. Generic (.'hurKt-tcrs. Body oblong, moderately convex, sculptured dorsally with more or less distinct longitudinal ribs. Cephalon with the front triangularly produced, though sc.aiv.ely defined from the epistome, lateral lobes rather large. Side-plates of mesosome lamellarly expanded, discontiguous. Metasome not abruptly contracted epimeraJ plates of the 2 anterior segments small, those of the 3 succeding ones well developed, l;iminar; last segment of a similar shape to that in the 2 preceding genera. Eyes very small, simple, subdorsal. Antennulaj and antenn;e much as
167 in Trichoniscus. Oral parts likewise rather similar, except that the terminal part of the maxillipeds is obscurely 5-articulate, and the epignath simple, lanceolate. Legs short and thick, scarcely at all increasing in length posteriorly. First pair of pleopoda in female very small and rudimentary; those in male well developed, with the inner ramus strongly produced, Inarticulate, terminal joint spiniform; inner ramus of 2nd pair in male likewise much produced, triarticulate, last joint narrow styliform. Uropoda with the inner ramus originating inside a broad ex- pansion of the basal part, and terminating, as in the genus Trichoniscoides. in a single slender spine. Remarks. This genus, established in the year 1860 by School, approaches, in the anatomical details, very near to Trichoniscus, or perhaps still nearer to Tri- choniscoides, with which it agrees in the simple structure of the eyes. It is, however, distinguished from both these genera by the peculiar sculpturing of the dorsal face, and by the lamellaiiy expanded lateral parts of the segments, causing the metasome to be less abruptly contracted than in the above-named genera. In the latter character it agrees with the genus Scyphacella of Smith, which may perhaps turn out to be identical with it. We know of 2 distinct European species, both of which belong to the fauna of Norway, and will be described below. l. Haplophthalmus Mengii, (Zaddach). (PI. LXXIV, fig. 1.) Itca Mengii, Zaddach, Synops. Crust. Pruss. p. 16. Syn: Haplophthalmm elegans, ScliObl. Specific Characters.- Body oblong oval, somewhat attenuated behind, with the dorsal face moderately convex. Cephalon rather large, with the front triangularly produced and tipped with several small denticles, lateral lobes compara- tively broad, rounded quadrangular, dorsal face divided in the middle by a transversal groove, its posterior part rather convex, and provided with several curved longitudinal ribs. Dorsal face of mesosome sculptured with 6 very distinct equidistant longitudinal ribs finely crenulated on the edge, the outermost rib, however, on the 1st and last segments, being irregularly interrupted; lateral plates subtruncate at the end, and having at their base a less conspicuous rib, 1st and last pairs somewhat broader than the others. Metasome scarcely attaining Y4 of the length of the body, 3rd segment with 2 very prominent juxtaposed ribs dorsally; last segment narrowly truncate at the tip. Antennulse with the basal joint rather broad and curved, terminal joint with only 4 sensory filaments. Antennse scarcely attaining '/4 of the length of the body, fiagellum shorter than
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AN ACCOUNT OF THE CRUSTACEA OF NORW
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BERGEN. JOHN GRIEG
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VI Copenhagen Museum, who have kind
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VIII H. J. Hansen. Oversigt af de p
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X C. Bovattius. Notes on the family
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thus meriting the name of true gnat
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Tribe 1. CHELIFERA. Body generally
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of legs. In the structure of the or
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8 fied with Apseudes talpa of Monta
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10 in female rather strong, hand ve
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12 flagellum. Inferior antennae a l
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14 Tanais, on separate lobes. Super
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16 Gen. 2. Paratanais, Dana, 1852.
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18 the genus Parataitais. Inferior
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20 robust than in T. tenuimanus, wi
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22 Remark*. - This form was first r
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24 free segment of mesosonie longer
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26 Occurrence. Only 2 female specim
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28 Distribution. -- Off Reykjavik,
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30 projection not denned from the b
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32 Imt slightly setous. Chelipeds s
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34 Cryptocope abbreviata, (PL XV, f
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Occurrence. I have met with this fo
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38 wholly absent, in male normally
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Apseudidee. G.O. S ars, autogr . I
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Ta na i d ae. 6.0. S ars, autogr. "
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Jar. aid se. G.O. S ars, autogr. I
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Ta n a i d ae. G. 0. S ars, autogr
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Ta naid as. G.O. S ars, autogr. I s
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Is Ta n a i d as . G.O. S ars, auto
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Ta n a i d as. G.O. S srs, autogr.
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40 1. Pseudotanais forcipatus (Lill
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42 form; carpal spine of the succee
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44 without distinct coxal plates. M
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46 first 2 segments of mesosome som
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long sensory 48 filaments. Mandible
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50 Fam. 2. Gnathiidae. r*. Body of
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52 Praniza might be the female of A
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54 2. Gnathia dentata, (PI. XXII. f
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56 Distribution. Greenland (Kroyer)
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58 Gen. 1. ^Ega, Leach, 1815. Gener
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60 2. &g& tridens, Leach. (Pi. XXV,
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62 the end of the propodos, inside
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64 7. ^Ega ventrosa, (PL XXVI, fig.
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66 spinules. Eyes very large, nearl
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68 Remarks. The above diagnosis ref
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70 hroad, coarsely spinous at the t
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72 Anterior pairs of legs nearly as
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74 mentary stars, arranged in trans
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76 Limnoria lignorum (Eathke). (PI.
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Tribe 3. VALVIFERA. Remarks. The ch
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80 E. Miers 1 ), the genus comprise
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Ta na i d SB. G.O. S ars, autogr. I
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Anthuridae. G.O. S ars, autogr . I
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Gnathiidae. G. 0. S BTS, autogr . I
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tgidae. G.O.Sars. autogr. I s opo d
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fegidae. G. 0. S ars, autogr . Is o
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G.O. S ars, autogr . I s opo da. PI
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Cirolanid I s opo da. PI. .,-.,..-
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Idotheidas. G.O. S ars, autogr . I
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82 flagellum much shorter than the
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84 he records as I. phosphor ca Har
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86 Occurrence. The species has a di
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88 Arc-torn* given by Latreille to
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90 2. Astaeilla arietina, G. 0. Sar
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92 Occurrence. It would seem to be
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Tribe k. ASELLOTA. Be-mark*. In the
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96 suture along the middle, and 2 l
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98 Fam. 2. laniridae. Characters. G
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U)0 peduncle. Kpignath of the maxil
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102 of 400 fathoms. Subsequently I
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104 length, without any distinctly
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106 Remarks. The type of this famil
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108 2. Munna limieola, G. 0. Sars.
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110 Inferior antenna?, as compared
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112 Paramunna bilobata, (PI. XLVII,
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114 hairs in their outer part, tip
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116 Gen. 4. DendrOtlOn, G. O. Sara,
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IdoiheidaB. G.O. S ars, autogr . I
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Arciuridaa. G.O. S srs, autogr I s
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Arcturidae. G.O. S ars, autogr I s
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Janiridse. G.O. S srs, autogr . I s
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laniridas. I s op o da.. PI. 42 G.
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Munnids. Is op o da.. PI. 44. G.O.S
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Munnidas- G.O. S ars, autogr I s op
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Munnidae. I s opo da- i. G. 0. S ar
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118 Fam. 4. Desmosomidae. Character
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120 ever, rather different, and ver
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122 middle, to a strong, recurved,
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124 short. Uropocla scarcely exceed
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126 form, with the proximal joints
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128 to he identical with a form pre
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130 the mandibles, in particular, i
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132 As our knowledge of this peculi
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134 with the carpal joint oblong fu
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136 1. Ilyarachna longicornis, (PI.
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m 138 3. Ilyarachna denticulata, G.
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140 antennae not quite twice as lon
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142 Occurrence. I first discovered
Page 248: 144 Gen. 6. EliryCOpe, G. 0. Sars,
Page 251: Desmosomidae, I s op o da.. PI. 50.
Page 257: Desmosomidae 1 . G. 0. S ars, autog
Page 263: Munnopsidae. G.O. S ars, autogr , I
Page 267: Munnopsidas. 6. 0. S ars, autogr .
Page 271: IVlunnopsidae. G.O. S ars, autogr .
Page 275: Munnopsidae. G 0. S srs, autogr . I
Page 278 and 279: 146 taken it very plentifully on a
Page 280 and 281: 148 must also occur off the coasts
Page 282 and 283: 150 the carpal one. dactylus minute
Page 284 and 285: 152 orbicular in form, dactylus com
Page 286 and 287: 154 The mandibles are strong, and a
Page 288 and 289: or less elongated, basal part not p
Page 290 and 291: 158 Remarks. This genus, establishe
Page 292 and 293: 160 thin, without air-chambers or a
Page 294 and 295: 162 Occurrence. According to Mr. Bu
Page 296 and 297: of n little bowl of a spoon; that o
Page 300 and 301: 168 the last peduncular joint, and
Page 302 and 303: 170 broad and laminar, though scarc
Page 304 and 305: 172 ramus narrow lanceolate, and ex
Page 306 and 307: 174 Remarks. This form was first de
Page 308 and 309: 176 Gen. 4. PorcelllO, Latr., 1804.
Page 310 and 311: 178 wards, frontal lobe less promin
Page 312 and 313: 180 4. Poreellio Rathkei, Brandt. (
Page 314 and 315: 182 plates of only the 2 anterior p
Page 316: 184 increasing in length posteriorl
Page 319: Munnopsidae. I s op i. G.O. S ars,
Page 323: Munnopsidae. G.O. S ars, autogr . I
Page 327: G.O. S ars, autogr . s op o Lig'ia
Page 331: Trichoniscidae. I s op o da. PI. 72
Page 335: Trichoniscidae. 1 S O ]3 O CLQ._ PI
Page 339: Oniscidas. I s opo da. PI. 76. G.O.
Page 343: Oniscidae. I s op o da. PI. 78. : r
Page 347: Oniscidae. I s op o da. P! . 80. G.
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Armadillidiidas. I s op i. V., V^,.
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JBopyridae. I s opo da- t G.O S ars
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Bopyridae. G.O S ars, autogr. I s o
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Bopyridae. G. 0. S ars, autogr I s
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186 Remarks. The present genus, est
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188 above-described genus Cylisticu
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190 as it is very common both in Sw
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192 Side-plates of 1st segment of r
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apparent. In the latter case, the 3
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196 simple, conic; posterior antenn
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198 Occurrence. This form is found
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200 fully grown, the parasite cause
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nier to their genus 7 \/ la '//////
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204 tal lamella, the distal edge of
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206 able want of correctness, as re
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208 branchiata. In the female, more
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210 Remarks. The present genus is v
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212 soft metasome of this Crustacea
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214 Miiller ought to be referred to
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216 and to a 'great extent encompas
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218 The genus MiCrOmSCUS, Fritz Mii
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220 tary appearance, in the present
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222 as a rule, very small and somet
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224 as Boj>-t/r/is mys'ulum and by
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226 On a closer examination, will t
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228 area in front. Caudal part of b
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230 2 middle figures on PI. 96) are
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232 shorter than the inner. Male no
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Bopyridae. I s op i. G. 0. S ars, a
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Bo py rid as. I s op o PI. G.O. S .
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Dajidae. G. 0. S ars, autogr . I s
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Dajid as. Is op o PI. 96. G. 0. S a
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234 anal segment obtusely produced
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236 Gen. 2. CryptOthlr, Dana, 1852.
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238 Aseoniscus simplex, G. 0. Sars,
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240 anal segment rounded at the tip
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242 apparatus present, Male (or las
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244 at present to state, as they ar
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246 Cryptoniseid (PI. C, fig. 3). N
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248 much more advanced stage, the o
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250 Page 122. Add the following spe
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252 Page 129. Add the 3 following s
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254 the end of the caudal segment.
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Acanthocope Acherusia Page. 131 65
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Page. crassicornis 175 Isevis 161 M
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Page. tenuicornis 23 tenuimanus 18
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PL 16. G. o. Bars. 1. Strong-ylura
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PL 84. 1. Bopyrus sqvillarum (Latr.
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2b. p 7 . Same, leg of 7th pair, ex
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cf p 3 - Same, leg of 3rd pair, cfp
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Cryptoniscidce. G.O.Sars, autogr. 1
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Cryptoniscidae. 1 S C>p O Pi. 100 G
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Desmosomidae. I S Op O da. Suppl. G
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Desmosomidae. 1 S O p O CLQ- Suppl.
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An Account of The Crustacea of Norw
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