NORTH AMERICAN COLEOPTERA. 311 



This species is the commonest form taken everywhere in the eastern 

 region. It is the most elongate of the species. The thorax is usually 

 comparatively coarsely and closely punctate with the intervals dis- 

 tinctly alutaceous, but the specimens from the warmer regions are 

 scarcely alutaceous. Specimens rarely occur with the thorax rather 

 finely and sparsely punctate. The punctures of the elytral striae 

 are always closely placed, almost crenate, and by this means (in the 

 absence of the % ) the species may be separated from convexior. 



Widely distributed : Massachusetts and Canada, westward to 

 Washington, Vancouver and California, Nevada, Utah, Kansas, 

 Colorado and Texas. 



P. convexior Lee. — Oblong oval, moderately convex, piceous, shining, 

 surface distinctly bronzed. Antennse piceous, three basal joints testaceous. 

 Head shining, sparsely punctate. Thorax nearly twice as wide at base as long, 

 distinctly narrowed in front, sides nearly straight, feebly obliquely truncate 

 near the front angles, a slight post-apical angulation, disc moderately convex, 

 sparsely finely punctate at middle, a little more coarsely at the sides, surface 

 shining. Elytra not wider at base than the thoi'ax, humeri obliquely rounded, 

 umbone moderate, disc convex, striato-punctate, strife not impressed, punctures 

 rather coarse and well separated, becoming gradually finer toward the apex, in 

 tervals flat, the inner three with numerous iuterstrial punctures, the outer with 

 but a single row. Body beneath piceous. Abdomen indistinctly alutaceous, 

 sparsely pubescent, the punctures moderate, numerous, but sparser at middle. 

 Legs as in punctulatn. Length .08 — .10 inch. ; 2 — 2.5 mm. 



The first joint of anterior tarsus is broadly dilated in the male ; 

 the last ventral segment is convex, without impression, the apex 

 rather obtuse. 



This species is of rather broader and more convex form than 

 pundulata ; has the thorax always sparsely and finely punctured, 

 the elytral strife not impressed, and the punctures always well sepa- 

 rated. 



Occurs especially in the south of California, thence north to Wash- 

 ington and eastward to Texas, Georgia, Florida, Illinois and Mis- 

 souri and District of Columbia. On the whole more southern in its 

 distribution than jmuctulata. 



P. elegaiis u. sp.— Oval, slightly oblong, moderately convex, head and 

 thorax black bronze, elytra bluish green, shining. Autennse rufotestaceous, 

 scarcely darker externally. Head punctate, slightly alutaceous. Thorax nearly 

 twice as wide at base as long, narrowed in front, sides nearly straight, obliquely 

 truncate near the front angles, with slight post-apical angulation, disc moderately 

 convex, shining, punctures moderate, not closely, but very regularly placed. 

 Elytra not wider at base than the thorax, humeri oblique, umbone moderate, 



