﻿Dec. 1895.] WiCKHAM. CoLEOPTERA OF N. E. AMERICA. 185 



P. apalachius Horn. — Blackish, shining, slightly iridescent, 

 thorax about equal in length and breadth, slightly narrowed posteriorly. 

 Body beneath smooth except for a few punctures on the sides of the 

 sternum and anterior abdominal segments. The male has a broad oval ex- 

 cavation near the posterior margin of the anal segment. Length, .48 

 in. r= 12 mm. 



Habitat : Canada, New York, Illinois, Pennsylvania and Maryland. 



P. honestus Say. PI. VII, fig. 4. — A rather small and easily recog- 

 nized species; the thorax is much narrowed and abruptly sinuate at 

 sides behind, the elytra more oval than usual with very deep striae and 

 much broader than the thorax. Length, .32 in. = 8 mm. 



Habitat: Widely distributed in the Eastern States, especially 

 northward. 



P. obscurus Say. — This and the following species are of a peculiar 

 appearance, more elongate than usual, the second dorsal puncture situ- 

 ated in the third stria. The thorax is narrowed behind, trapezoidal in 

 shape, the hind angles very obtuse, rounded. Length, .42 in. = 10.5 mm. 



Habitat : Pennsylvania, Ohio, south and westward. 



P. ventral is .Sa_y.— Separable from obscurus by the characters 

 given in the table. Length, .35 in. =^ 9 mm. 



Habitat : Louisiana, Florida, Missouri, Illinois and Kansas. 



P. lachrymosus Newm. — Black, thorax much narrowed behind, 

 elytral striae deep, interstices convex. Length, .60 in. ^ 15 mm. 



Habitat : New York, southward and westward. 



P. coracinus Ne7um. PI. VII, fig. 5. — Black, thorax quadrate 

 somewhat narrowed behind, sides broadly rounded. Elytral striae 

 deep, impunctured. Length, .60-. 70 in. = 15-17.5 mm. 



Habitat : Canada and Wisconsin to Tennessee and Virginia. 



P. stygicus Say. — The tubercle in the thoracic fovea easily dis- 

 tinguishes this from the preceding. Length, .57 in. = 14 mm. 



Habitat : Canada to Illinois and Georgia. 



P. relictus Neivm. Sufficiently distinguished by the characters 

 given in the table. Length, .64 in. = 16 mm. 



Habitat : New York, Pennsylvania and Michigan. 



P. superciliosus Siy. — Black, shining, elytra purplish. Thorax 

 wide in front, much narrower behind, hind angles broadly rounded. 

 Elytral striae deep, impunctured. Length, .60 in. = 15 mm. 



Habitat: Michigan, Pennsylvania and New York. 



