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$Wetenschap - \Nijverheid- Handel$

160 thin, without air-chambers or any branchial structure, inner plate lobular, except on the 2 anterior pairs. Sexual appendage of male simple, conic; inner ramus of both 1st and 2nd pairs of pleopoda transformed for copulative purposes. Uro- poda with the basal part broadly expanded inside, and partly covered by the last caudal segment, rarni conically tapered, and, as a rule, terminating bunch of delicate hair-like bristles. each in a Remarks. I have found it advisable to establish this new family, to comprise a number of genera, which have hitherto been referred to the family Liyiidce, but which exhibit in common several characteristic features not found in the true Lii/iitl j . The following 5 genera ought to be referred to the present family: Trichoniscus, Trichoniscoides, Haplophihalmus, Scypliacella, and Acioniscus. Of these the first 3 are represented in the fauna of Norway, and will be treated of below. Gen. 1. TriehOniSCUS, Brandt, 1833. Syn : Itea, Koch. Philougria, Kinahan. Generic Characters. Body more or less oblong, attenuated behind. Ce- phalon rounded in front, with small, though distinct lateral lobes. Side-plates of the 3 posterior segments of mesosome more prominent than those of the 4 pre- ceding segments. Metasome abruptly contracted, with the epimeral plates of the 2 anterior segments not concealed, last segment narrowly truncated at the tip, and slightly emarginated on each side. Eyes small, but distinct, consisting of only 3 visual elements imbedded in a dark pigment. Antennulae with the 1st joint rather large and curved, last joint generally longer than the 2nd. Antenna 1 everywhere clothed with small appressed spikes, flagellum much shorter than the peduncle, and gradually tapering distally. Oral parts considerably prolonged, giving the buccal mass a pronouncedly conical form. Left mandible with 2, right \\i11i only a single penicil behind the cutting part. Maxillipeds with the distal joint of the basal part rather large and forming at the end outside a broad, lamellar expansion finely ciliated at the edge, terminal part lanceolate, with the outer 4 joints confluent, masticatory lobe nearly as large as the terminal part, and terminating in a narrow, finely ciliated lash, epignath oblong linguiform, with a rounded expansion at the base. Legs of moderate size, slightly increasing in length posteriorly, outer joints extremely spinous. Inner plate of first pair of
161 pleopoda in male greatly produced. Inarticulate ; that of 2nd pair of different structure in the different species. Uropoda with the basal part rather broad and flattened, both rami terminating in a pencil of delicate hairs. Remarks. This genus, established by J. F. Brandt, forms the type of the family Trlclwnixrl
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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.
Page 242 and 243: m 138 3. Ilyarachna denticulata, G.
Page 244 and 245: 140 antennae not quite twice as lon
Page 246 and 247: 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
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Page 290 and 291: 158 Remarks. This genus, establishe
Page 294 and 295: 162 Occurrence. According to Mr. Bu
Page 296 and 297: of n little bowl of a spoon; that o
Page 298 and 299: 166 clear golden yellow colour, wit
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.
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Oniscidae. I s op o da. PI. 78. : r
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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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