344: G. 0. SARS, 



male comparatively feeble, in male much stronger and nearly equal-sized, 

 with the propodos suhclavate in form. Anterior pairs of pereiojjoda rather 

 narrow; the 3 posterior pairs comparatively strongly built and but little 

 elongated, with the carpal joint rather short; basal joint oflastpair sliglitly 

 expanded, with the posterior edge almost angularly bent below the middle. 

 Last pair of uropoda scarcely as long as the urosome, inner ramus very 

 small, outer one somewhat flattened, with several fascicles of spines, but 

 without ciliated setge, terminal joint small. Telsou short and broad, nearly 

 semicircular in outline, each half armed with 3 slender lateral spines and a 

 single apical one, cleft very narrow. Length of adult female 6 mm., of male 

 7 mm. 



Eemarks. — The present new species, which I have much pleasure in 

 dedicating to the diligent explorer of the North Caspian Sea, Mr. Warpa- 

 chowsky, is easily distinguishable from the other species here described by 

 the angularly produced lateral lobes of the cephalon, the deuse hairy cloth- 

 ing of the inferior antennae in the male, and the structure of the gnatho- 

 poda in that sex, and finally, by the comparatively short and stout posterior 

 pairs of pereiopoda, and more particularly the peculiar shape of the basal 

 joint in the last pair. 



Description of the female. 



The length of fully adult, ovigerous specimens scarcely exceeds 6 mm., 

 and this form accordingly belongs to the smaller species of the genus. 



The form of the body (see fig. 1) is rather slender and compressed, and 

 the back perfectly smooth, without any trace of dorsal projections. 



The cephalon (fig. 2) about equals in length the first 2 segments of me- 

 sosome combined, and is but very slightly produced in front. The lateral 

 lobes are not very prominent, and terminate anteriorly in an acutangular 

 cornel', they being defined behind by a very slight emargination. 



The anterior pairs of coxal plates are of moderate size, and fringed on 

 their distal edge with scattered bristles. The 1st pair (see fig. 5) are scarcely 

 expanded distally, being obtusely truncated at the tip. The 3 succeeding pairs 

 (see fig. 6) are but little broader, and have the extremity somewhat obliquely 

 truncated. The 4th pair (see fig. 7) are, as usual, the largest, though not 

 nearly as broad as they are deep, and have the posterior expansion vertically 

 truncated and edged with 4 bristles. 



The 3 posterior pairs of coxal plates (see figs. 8 — 10) exhibit the usual 

 shape. 



The epimeral plates of the metasome are well developed, the 1 st pair being 

 rounded, whereas the other 2 have the lateral corners slightly produced. 



4'H3.-MaT. CTp. 324. a 



