220 GEO. H. nORN, M. D. 



broadly oval, distinctly narrowed behind ; surface not more punctate than in the 

 preceding series; beneath smooth; thorax not wider than the head, longer than 

 wide ; sides slightly arcuate, not narrowed in front, dorsal punctures very fine and 

 small, very irregularly placed ; elytra wider than the thorax, conjointly square, 

 shining, rather coarsely and roughly punctate, the punctures sparsely placed, pu- 

 bescence sparse; abdomen very coarsely sparsely punctate; beneath more sparsely 

 but less coarsely punctured than above. Length .34 inch ; S.5 mm. 

 Male — Unknown. 

 Female. —Anterior tarsi very slightly dilated ; ventrals entire. 



A pretty, graceful species resembling haltimovensis in its coloration, 

 but differing in many otber respects. Its tborax and bead have nuich 

 fewer punctures tban any other species of the series. 



I have seen but one specimen, sent me by Mr. Charles Dury, from 

 Kentucky. 



P. bnltimoreiisis Grav. — Rufo-castaneous; head and thorax black; an- 

 tennae stout, much shorter than the head and thorax, piceous, apical joint pale, 

 joints 4-10 short, moniliform, the outer ones quite transverse; head transversely 

 quadrate, somewhat narrowed behind the eyes, very sparsely coarsely punctate at 

 the sides and posteriorly; beneath smooth; thorax scarcely as wide as the head, 

 a little longer than wide, distinctly narrower posteriorly ; sides distinctly sinuate ; 

 surface sparsely and rather irregularly, coarsely punctate, smooth at middle ; elytra 

 wider than the thorax, conjointly nearly square, rather coarsely not densely punc- 

 tate, pubescence feeble, abdomen rather coarsely not densely punctate; beneath 

 similarly punctured : legs piceous or black. Length .40 — .52 inch ; 10 — ]?> mm. 



Male. — Anterior tarsi moderately dilated : last ventral segment with a simple, 

 small, oval emargination. 



Female. — Anterior tarsi slightly dilated; last ventral entire. 

 A very striking species in its size, sculpture and color, and not resem- 

 bling any other except the next. 



Occurs in the Middle and Southern States. 



P. apicallN Say. — Black, tips of abdomen rufo-eastaneous: antennse a little 

 longer than the middle of the thorax, piceous, apical joint paler, joints fi-10 as 

 wide as long: head quadrate, transverse, sparsely coarsely punctate, smooth at 

 middle, beneath smooth ; thorax a little narrower than the head, slightly longer 

 than wide, slicchtly narrowed behind: sides sinuate; surface sparsely coarsely 

 and irregularly punctate, median space smooth ; elytra wider than the thorax, 

 conjointly a little longer than wide, coarsely sparsely punctured, pubescence rather 

 coarse : abdomen more coarsely punctured than the elytra ; beneath less coarsely 

 punctured. Length ..36 — .44 inch; 9 — 11 mm. 



Male. — Anterior tarsi feebly dilated; last ventral segment with a small oval 

 emargination. 



i^emo/e.— Anterior tarsi scarcely dilated; last ventral entire. 

 Besides the color this species differs from the preceding in the form of 

 the antennae. These are longer, more slender and the joints not at all 

 moniliform. 



Occurs from (Canada to Georgia. 



