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31<br />

6. Leptognathia manea, G. o. s.-n-s.<br />

(PL XIV, tio. 3).<br />

Leptognathia (?) man-ca, G. 0. Sai-s, 1. c. p. 44.<br />

Characters. 9 Body slender and elongated, more than 8 times<br />

as long as it is broad, with the segments marked off by conspicuous constrictions,<br />

posterior half slightly attenuated. Cephalosome of moderate si/e,<br />

with the side<br />

edges regularly curved. First free segment of mesosome much larger than the<br />

last one, and somewhat dilated in front. Metasome equalling in length the hist<br />

2 segments of mesosome combined, and rather narrow, subcylindric in form, with<br />

the terminal segment short and obtuse. Superior antenna' with the 2nd joint much<br />

shorter than the outer 2 continued, ('helipeds of moderate si/e,<br />

scarcely dilated, oblong oval in form, and somewhat longer<br />

with the hand<br />

than the car-<br />

pus, fingers shorter than the palm. The 3 anterior pairs of perieopoda exactly<br />

alike both in si/e and structure, with the dactylus slender, setiform; the 3 posterior<br />

pairs having the basal joint but slightly tumefied. Pleopoda wholly absent. Uro-<br />

poda about half the length<br />

of the metasome. inner ramus Inarticulate, outer one<br />

uniarticulate and sc.arc.ely half as long. Length 2.00 mm.<br />

Remarks. The total absence (in the female) of pleopoda is a very<br />

striking feature, which at first put me in some doubt as lo the true generic<br />

relation of this form. Having, however, on a closer examination, found it to<br />

agree fairly well in all other essential characters with the species of the present<br />

genus, I prefer to retain it in the genus Leptognathia,<br />

lous species.<br />

as a, somewhat anoma-<br />

Occurrence. I have found this form in two widely separated places on<br />

the Norwegian coast, viz., in Eidsfjord, west of Listerland, and at ApehaT. Nam-<br />

dal. In both places it occurred in rather small numbers at depths of 100 150<br />

fathoms.<br />

Gen. 5. TanaOpSlS,<br />

ic Characters. Body comparatively<br />

O. 0. Sa.s. i,<br />

robust, with the metasome<br />

unusually large and composed of (i well-defined segments. Eyes wanting. Su-<br />

perior antenna? in female distinctly 4-articulate. Oral parts very poorly developed.<br />

Mandibles extremely small, and rudimentary, unarmed, and without a trace of<br />

1 molar expansion. 1st pair of maxilla with<br />

the masticatory lobe much curved.<br />

Maxillipeds with the masticatory lobe very short, transverse, palp slender and

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