34 



Cryptocope abbreviata, G-. 0. Sars. 



(PL XV, fig. 1). 

 Tanais abbreviatus, G. O. Sars, Beretning om en i Sommeren 1865 foretagen zool. Eeise, p. 41. 



Specific Characters. - 9 Body extremely short and stout, sub-depressed, 

 scarcely more than 3 times as long as it is broad. Cephalosome scarcely as 

 long as it is broad posteriorly, and considerably narrowed in front, frontal mar- 

 gin slightly Insinuate, with the lateral corners somewhat produced. Fifth and 

 6th segments of mesosome somewhat larger than the other 4, which are very 

 short. Metasorne but little longer than the last 2 segments of mesosome combined, 

 and gradually narrowed in its posterior part, terminal segment comparatively 

 short and obtusely produced at the tip. Superior antennae somewhat shorter than 

 the cephalosorne, basal joint about the length of the other 3 combined. Chelipeds 

 rather strong, carpus comparatively short and thick, hand longer than the former, 

 and slightly narrowed distally, fingers about the length of the palm. The 3 

 anterior pairs of pereiopoda rather slender, with the dactylus long and setiform; 

 the 3 posterior pairs somewhat stronger, but with the basal joint not much 

 tumefied. Pleopoda with the rarni quite smooth, the inner one extremely minute, 

 nodiform. TJropoda scarcely attaining the length of the terminal segment of 

 metasome, inner ramus distinctly biarticulate, and tipped with long diverging seta3, 

 outer one extremely minute and uniarticulate. Length 1,40 mm. 



Remarks. This form may be easily recognized from the other Norwegian 

 Tanaids by its extremely short and thick body, and by the rudimentary condition of 

 the pleopoda. It differs from Cryptoeope arctica Hansen. which it somewhat resembles 

 in the form of the body, in the rami of the pleopoda being quite smooth, whereas 

 in the last-named species, according to Dr. Hansen, they are tipped with 

 small bristles. 



Occurrence. I first discovered this form in the Christiania Fjord 



at a depth of about 30 fathoms, and have subsequently found it occasionally in 

 other places also, both on the south and west coasts of Norway. It has not 

 been recorded by any other author. 



Gen. 7. HaplOCOpe, G. 0. Sars, 1880. 



Generic Characters. - - 9- Body slender and elongated, resembling, as regards 

 its outward appearance, some species of the genus Leptognathia. Metasome rather 



