1879.] 145 (Kingsley. 
Notes on NortH AMERICAN DecAapopa. By J. S. KInGstey. 
The specimens upon which this paper is based are to be found in 
the Museum of the Peabody Academy of Science at Salem, Mass. 
MAIOIDEA. 
Family MAIIDAE. Sub-Family PISINAE. 
Genus Micropurys M. Edw., (Mitnia Stm.). 
Microphrys error sp. n. 
Microphrys depressa Streets and Kingsley, Bulletin Essex Institute, 
Tx, 103 (1877). (non Fisheria depressa Lockington.) . 
A further examination of the specimen sent by Mr. Lockington as 
a type of his Fisheria depressa convinces me that it is not the species 
described by him under that name. I regard it as belonging to the 
genus Microphrys (Milnia Stm.) but it differs from Stimpson’s 
diagnosis of the genus in the following respects. The orbits have a 
distinct fissure above, and no trace of a second; the basal joint of 
the antenna has one strong spine at the external angle, but no 
second smaller one. The external maxillipeds and dactyli of the 
ambulatory feet strongly resemble those of M. bicornutus. Should 
it be thought that these characters of antennae and orbits are of 
generic value, I would propose the generic name Eumilnia. 
In the single specimen (a male) before me, I note the following 
characters. 
Carapax depressed, regions very distinct and protuberant (more 
so than in M. bicornutus), hairy and armed with smaller and more 
acute tubercles than in that species. There are two stiong spines 
on the posterior portion of the branchial region, near together and 
placed further back than the single one in WW. bicornutus. <A transverse 
crowded row of spiniform tubercles crosses the intestinal region. 
Margin of the hepatic region with an imbricated process, and on the 
branchial region an imbricated laminiform ridge, beneath the anterior 
portion of which is a strong styliform tooth. Rostrum with the horns 
straight, divergent, and not at all incurved at the tips. Orbits with 
a strong, prominent, acute tooth at the inner angle and a single dis- 
tinct fissure above. Basal joint of antenna with a single spine at the 
external distal angle, which is longer and more acute than in M. bi- 
cornutus. Chelipeds moderate; meros with one or two teeth at the 
PROCEEDINGS B. 8. N. H.— VOL. XX. 10 MAY, 1879. 
