220 THE MYRIAPODA OF NORTH AMERICA. 



1'. UISPIDIPESS. 



I '. olivaceo-bruDneus, immaculatus ; seuto anale triangulare piloso, apice trunoato et decurvato ; pedibus hispidis ; 

 appendicibus masculis brevibus, robustis, spina terminate modica, ultima abrupte curvata, dense pilosa. ( Fig. 4S. ) 



Olive-brown, immaculate; until scutum triangular, with long hairs; apex truncate and decurvate; feet roughly 

 hairy; male appendages short, robust ; their terminal spine moderate, distally abruptly curvate, densely pilose. 



P. hispidipes, Woo/7, Proc. Acad. Nat. Sci., 1864, p. 7. 



The side plates are rather short, with their edges much thickened. The head has its 

 vertex strongly canaliculate. Its anterior face is marked with two small 

 punctiform impressions. The lower border is not very strongly emarginate, 

 and is set with a fringe of short thick hairs. The antenna? are mostly dark- 

 colored, scarcely at all clavate, and coarsely pubescent. The feet are rough, 

 with closely set. stiff hairs. The anal scutum is prolonged posteriorly, so as 

 to come almost to a blunt point. The appendages in the male are short and 

 thick. Their terminal spine is slightly curved at its base, thence is nearly 

 straight, save at its distal extremity, where it is abruptly curved, becoming nearly hori- 

 zontal. It is beset with very numerous long hairs. I "have examined them in eighteen 

 specimens, and found them to agree perfectly. The female appendages consist of a pair 

 of short, conoidal, very pilose processes, which have an opening along their inner edge. 

 Length, Is inches. 



//'<//. Illinois. — Smithsonian Collection. 11. Kennicott. 



Yar. ? P. lsete castaneus, fulvo vel^ubro maculatus, linea nigra dorsali ornatus; laminis lateralibus marginibus 



minis vel t'ulvis. 



Var. '.' Bright chestnut, maculate with red or yellow, ornamented with a black dorsal line ; margins of the 

 lateral laminae red or yellowish. 



Wood, Proc. Acad. Nat. Sci., 1864, p. 8. 



This is possibrj a distinct species, but as I have seen but a very few individuals, and 

 the male genital appendages do not differ from those of /'. hispidipes, 1 prefer not risking 

 a synonym. Whether the spots are yellowish or red in the living animal, the length of 

 time the specimens have been preserved in alcohol precludes me from deciding. 



The spots are soineti ines arranged regularly — two huge ones on each side of the mesial 

 line, and a row of small ones on (he posterior border. 



Hub. Illinois. — Smithsonian Collection, li. Kennicott. 



