KONGL. SV. VET. AKADEM1ENS HANDL1NGAE. BAND. 22. N:0 7. 267 



This species comes perhaps nearer to Euthemisto than the other species assigned 

 here to Parathem isto, to judge from the statement of Spence Bate that the armature 

 of the metacarpus in the fifth pair of peraeopoda is unlike that in the two following pairs. 

 From its congeners the species seems to be well defined if the drawing is to be trusted. 



Spence Bate says: 



»Cephalon ovate, not large. — — — — Gnathopoda very short: first pair having the carpus 

 scarcely produced inferiorly; propodos tapering; dactylos short: second pair having the meros 

 inferiorly produced; carpus infero-anteriorly produced to two-thirds the length of the propodos; 

 dactylos short and straight. First two pairs of pereopoda subequal, slender, having the carpi 

 broad and setose; three posterior pairs much longer than the two preceding, having the pro- 

 poda very long, nearly half the length of the whole, anteriorly fringed with fine cilia, which in 

 the third pair are long thickly packed, and comb-like, but sparsely existing on the fourth and 

 fifth pairs. Peduncle of the antepenultimate and penultimate pairs of pleopoda reaching to half 

 the length of that of the ultimate; rami of the penultimate pair unequal, and longer than those 

 of the preceding pairs; ultimate pair having the peduncle three or four times as long as the 

 telson; rami unequal, slender, smooth, nearly one half the length of the peduncle. Telson ob- 

 tusely triangular, scarcely as long as broad.» 



He remarks further: 



«The peculiar form of the pereion (which Dana says is »very much compressed, the back 

 rising to an edge») I attribute to accident, such as to pressure by the hand when first caught, 

 since in every other respect the details of the specimens collected in the Antarctic expedition, 

 and presented to the British Museum by the Admiralty, correspond exactly with Dana's de- 

 scription and figure. No species in any genus of this family, that I am aware of, has a dorsal 

 carina." 



