622 Goleopterological Notices, VII. 



Georgia. 



The unusually small head and prothorax, large elytra and pale 

 coloration distinguish this species from picetts, and, from the two 

 preceding species, it may be known immediately by the anteunal 

 structure. A single male. 



P. piceus of LeConte, is represented in my cabinet only from 

 Pennsylvania, and is apparently confined to the northern mari- 

 time provinces of the Atlantic coast fauna. It is, when mature, 

 of a dark rufo-piceous tint with the usual black abdomen of this 

 section of the genus, and is identifiable by its short and decidedly 

 transverse elytra, even in the male, and by the small fifth antennal 

 joint of that sex, this being notably shorter than either of those 

 which adjoin it ; the antennae are rather shorter than in any of 

 the three preceding species. The prothorax is but little wider 

 than long and is narrowed anteriorly from near ihe middle, diflfer- 

 ing in this respect from those most closely allied, and the vertexal 

 fovese are more widely separated than usual. 



P. iowensis. — Nearly similar in form and coloration to granicollis, 

 the antennae less pale and the pronotum smooth, highly polished and devoid 

 of granuliform punctures; pubescence sparse. Head only slightly wider than 

 long, about as wide as the prothorax, the eyes large and convex. A ntennse not 

 quite as long as the head, prothorax and elytra, only moderately and very 

 gradually incrassate toward tip, the tenth joint distinctly elongate and equal 

 to the ninth. Prothorax not (more than % wider than long and }4 as wide as 

 the elytra, parallel, narrowed only very near the apex, which is broad and 

 transversely truncate; surface convex, the median fovea large, broadly im- 

 pressed and scarcely extending through basal % of the length. Elytra ample, 

 slightly shorter than vride ; humeral swelling only moderately pronounced, the 

 sides thence quite moderately divergent and broadly, evenly arcuate to the 

 apex ; surface rather convex, highly polished and smooth, the striae normal, the 

 discal subentire becoming stongly and inwardly arcuate toward tip. Ab- 

 domen about as wide as the elytra and distinctly shorter, polished and sculp- 

 tureless. Length 1.7 mm. ; width 0.72 mm. 



Iowa (Keokuk). 



Diflfers from granicollis in its shorter antennas, smaller, less 

 transverse and smooth prothorax, in the form of the discal stria 

 of the elytra and smoother and more polished integuments; from 

 piceus, it may be distinguished by the characters of the table. 



P. granicollis. — Moderately stout and convex, piceo-rufous, the abdo- 

 men blackish, impunctate except the pronotum, which is sparsely granulose ; 

 pubescence as in the preceding species. Head well developed, much wider 



