ART. 17 ON" TEEEESTRIAL ISOPODS LOHMANDEE 17 



triangular shape. (Fig. 6 &-/.) The inner margins of the third 

 and fourth exopodites are sparsely fringed with fine setae. The 

 second and fourth exopodites each bear a short spiniform seta at 

 the apex and the third exopodite bears three. Plumose setae are 

 completely lacking. The first endopodite appears to be lacking, the 

 second is small and narrow and the third to fifth are larger and 

 subtriangular. (Fig. 6 g-h-i.) 



Uropoda with bases large, and extending a little beyond the ex- 

 tremity of the terminal segment. Rami conical, the inner being 

 nearly as long as the outer but much narrower throughout and both 

 tipped with a few setae. 



Rema/rhs. — I have had no opportunity to examine the type speci- 

 men of Trichonis(yus 'pafillicornis from Cook Inlet. In fact, neither 

 the description nor the reproductions of Richardson admit of any 

 certain conclusion that the individuals from Bering Island and the 

 single specimen from Cook Inlet belong to the same species. How- 

 ever, as the Bering Island individuals were determined by Richard- 

 son, the identity may be regarded as settled. On this presumption, 

 Richardson's description of the antennae of pa'pillicomis appears not 

 to be quite correct, as she characterizes the flagellum as " composed 

 of about seven articles" (1905, p. 696), while it is only four- 

 jointed.^ Otherwise I agree with Richardson's description of the 

 species. Her reproductions are characteristic though somewhat 

 schematic. 



8 Mr. C. R. Shoemaker, of the United States National Museum, has examined the an- 

 tennae of the type Trichoniscus papillicornis Richardson and finds that, owing to the fact 

 that the type is a small, immature specimen, the exact number of articles in the flagella 

 is rather obscure. As well as he is able to determine, there are four or possibly five 

 articles, but the fifth is very obscure and uncertain. 



