376 



REVISION OF THE TKNEBRIONID/E OF AMERICA, 



entirely black, excepting the margin and base of elytra, and an irregular space nearer the 

 apical angle of the thorax, which arc dark testaceous. The thorax above has four slight 

 impressions, two basal and two on each side of the middle, the latter are probably acci- 

 dental. The antennae and legs are piceons. 

 One specimen from San Francisco. 



P. pilifcra, Leo., Now Species, p. 125. 



'['he thoracic and elytra! margin are in this species fringed with hairs. It may be 

 readily known from the preceding by its more elongate and depressed form and by its en- 

 tirely black color. 



Length .23-28 inch. 



From Cape St. Lucas, Lower California. 



P. tcstacca, Say, Long's Expedition 2, 280. 



The margin of the body is not fringed. The surface smooth and shining and testa- 

 ceous in color. The elytra are sometimes ornamented with black spots. One specimen 

 has the disc of the elytra entirely black, with only a narrow space at base and on the 

 margins, testaceous. 



Length .28-30 inch. 



Rather abundant on the Eastern coast. 



P. long ul a, Lee, New Species, p. 125. 



Length .22 inch. 



From the Gulf coast, Mississippi Island. 



P. pieipes, Say, Long's Second Exp. II, p. 280; Am. Pnl. Ed. Leo., I, p. 185. 



Elongate oval, black, shining. Head finely and sparsely punctured. Thorax broader 

 than long, moderately convex, very feebly and sparsely punctured and with a short linear 

 longitudinal basal impression on each side; anteriorly emarginate, angles obtuse; sides 

 feebly rounded, gradually narrowing to apex ; base feebly sinuate. Elytra, oval, moder- 

 ately convex, wider at base than the thorax, with distinct stria; deeper at, apex ; interstices 

 feebly punctulate. Beneath shining, black. Antenna? brownish. 



Length .22-.2H inch. 



from the southern and middle Atlantic coast. 



P. do hi lis, Loo., Now Species, p. 12(1. 



Easily known by the pale color, single brown spot on each elytron, and by the absence 

 of any marginal line at the; base of the thorax. 

 Length .20-.24 inch. 

 Cape St. Lucas, Lower California. 



