30 



projection not defined from the basal part, and carrying- outside 2 or 3 unequal 

 setae. Length 2.80 mm. 



Remarks. — This species was likewise established by Prof. Lilljeborg, and 

 may easily be recognized by the comparatively short hand of the chelipeds, but 

 more especially by the peculiar structure of the uropoda. 



Occurrence. — The species occurs along the whole Norwegian coast, from 

 the Christiania Fjord to Vadso, in depths ranging from 30 to 100 fathoms. 



Distribution. — Bohuslan (Lilljeborg), Mediterranean at Messina (the 

 present author) ; coast of Denmark (Meinert). 



5. Leptognathia dentifera, G. O. Sars, n. sp. 



(PI. XIV, fig. 2) 



Specific Characters. — Q. Body moderately slender, being not quite 8 

 times as long as it is broad, cephalosome rather narrowed in front. First free 

 segment of mesosome somewhat longer than the last one, but considerably shorter 

 than the other 4. Metasome rather poorly developed, scarcely as long as the 

 last 2 segments of mesosome combined, and not any broader, terminal segment 

 comparatively short and obtusely rounded at the tip. Superior antennae with the 

 2nd joint exceeding in length the outer 2 combined. Chelipeds not very strong, 

 hand comparatively short, scarcely attaining the length of the carpus, triangular 

 in form, with an obtuse projection in front of the insertion" of the dactylus. 

 Pleopoda extremely small, though of normal structure, natatory setse very short. 

 Uropoda exceeding half the length of the metasome, basal part produced at the 

 end inside to an indexed hook-shaped process, both rami well defined and Par- 

 ticulate, the outer one scarcely half as long as the inner and much narrower. 

 Length 1.60 mm. 



Remarks. — This new species may be at once distinguished from any of the 

 forms previously described, by the poor development of the pleopoda, but more 

 especially by the peculiar hook-like projection issuing from the basal part of the 

 uropoda inside, which latter character has given rise to the specific, name here 

 proposed. 



Occurrence. — I have only seen a few female specimens of this form, 

 some of which were ovigerous. They were taken in the Christiania Fjord at Hanko 

 and Soon from depths of 60 — 100 fathoms. 



