U! \ M \; U.-IK U \ If] 



Remarks. This genus 1 is on the whole allied to .Vanmmiscws, but differs in the following 

 particulars: the antennuhe are normal, not terminating in a vesicle; a pair of epitneral plates are found 

 at first segment, sixth and seventh segments dursalh marked off from one another, and the female 

 operculuin is very small. 



Only a single species is known. 



52. Nannoniscella groenlandica n. sp. 

 (PL VII, figs. 7 a 7 d; PI. VIII, figs, i a-i f.) 



Female (with marsupiumj. Body about two and a half times as long as broad; lateral mar- 

 gins of the major anterior part, viz. head and the four thoracic segments, are, taken as a whole, 

 somewhat convex, while the remaining thoracic segments and the anterior part of the abdomen have 

 the lateral margins nearly parallel, and this posterior section is conspicuously narrower than second 

 >r third segment 



The front area on the head is subtriangular, with the anterior end broadly obtuse and rounded; 

 its lateral margins without keels. The protruding lateral plates reach about to the base of the anten- 

 nal squama (fig. i b) and have the end acute. -- Antennula: a little shorter than the head; flagellum 

 3-jointed, scarcely as long as the two distal peduncular joints combined. Anteninc with the peduncles 

 almost half as long as the animal; sixth joint considerably longer than the fifth and almost as long 

 * the flagellum, which is 8-jointed, with first joint about as long as the sum of the five following 

 joints; squama nearly as long as third peduncular joint, much longer than broad, acute. 



The four anterior thoracic segments have their antero-lateral angles acute, but scarcely pro- 

 duced and without any tenninal spine. The epimeral plates with the end very obliquely cut off, acute. 



Abdomen almost half as broad again as long; the major part of the lateral margins and the 

 terminal margin constitute a semicircular outline. Operculuin (fig. i f) very small, longer than broad, 

 increasing in breadth from the base to far beyond the middle, somewhat ovate, but the median half 

 of the posterior margin is a little concave, and the whole posterior margin has a number of long 

 Mfei Uropods with the peduncle narrow at the base and widening much to the very oblique end; 

 endopod slightly longer than the peduncle, somewhat longer and thicker than the exopod. 



Length of the ovigerous female 2-2 mm. 



Remarks. The female is easily distinguished from even- other form of northern Asellota by 

 a number of features; unfortunately the male is not known. 



Occurrence. Taken by the "IngolF at a single place. 



West Greenland: Lat O4O3' N., mouth of Ameralik Fjord, 570 fath., shells: i spec, 



' After 11*. VII VIII had been finUhcd. I discovered that Vanhfiffen in 1914 had established the gnu Auttrvutnu, 

 with three antarctic specie*. It is not improbable that a more thorough examination of various feature* in Ua anlwial* may 

 how that one or two - but scarcely the third of hi* specie* are congeneric with my Kammanatrlla gnnlamtitm. and if 

 that be the case, the generic name given by me most be cancelled. But at our present state of knowledge I prefer to kc*p 

 the name \a*Monueella until the male of my new species ha* been found and some point* in the structure of tbr thoracic 

 at*, etc. of Vanboffrn animals have been investigated. 



