212 GEO. H. HORN, M. D. 



thorax a little wider than the head, longer than wide; sides nearly parallel. dorsal 

 punctures four, moderately impressed, the anterior always more distant; elytra 

 wider than the thorax and slightly longer, a little longer than wide conjointly, 

 punctures moderately coarse, not closely placed ; surface shining, with very little 

 pubescence; abdomen sparsely punctured, the punctures finer than those of the 

 elytra; beneath more shining, similarly punctured. Length .20 inch; 5 mm. 



Male. — Tarsi filiform; last ventral with a very slight emargination, and a lon- 

 gitudinal impression, the entire apex with a rather wide membranous border. 



Female. — Tarsi filiform; last ventral entire. 



This species has the form and appearance of nigritulas., but may be 

 known by the dorsal punctures and large thorax. 



Occurs in Vancouver and Nevada. 



P. fallaciosus n. sp.— Shape somewhat fusiform, black, shining; legs and 

 coxffi rufo-testaceous ; antennse brown, paler at base, nearly as long as the head 

 and thorax, joints 4-10 not longer than wide, gradually broader; head quadrate 

 oval, black, shining, a very few punctures behind the eyes; thorax oval, a little 

 longer than wide, not narrowed in front; sides not sinuate, dorsal punctures four, 

 moderately impressed: elytra a little longer and wider than the thorax, wider at 

 apex, a little broader than long, moderately convex, punctuation sparse, nearly 

 obsolete along the base and side margin, pubescence very sparse; abdomen mod- 

 erately shining, punctuation sparse, finer than on the elytra, pubescence very 

 sparse; beneath a little more coarsely punctured than above. Length .Ifi inch; 

 4 mm. 



Jlftt/c— Anterior tarsi slender; last ventral segment with large triangukir emiir- 

 gination. 



i^emflf/e.— Tarsi slender; last ventral entire. 



A much smaller and blacker species than the others of the quadri- 

 punctate series, diifering- especially in the male sexual characters and the 

 punctuation of the elytra. 



Two specimens, Massachusetts and Pennsylvania. 



P. brevipeiiiiis n. sp. — Form moderately elongate, gradually broader be- 

 hind, iJiceDus to brown; legs testaceous; antennse brownish, scarcely as long as 

 the head and thorax, joints 5-10 as wide as long; head oval; sides parallel, 

 sparsely punctulate behind the eyes ; thorax very little wider than the head, about 

 one-fourth longer than wide; sides parallel, dorsal punctures normally four, rather 

 deeply impressed, equidistant; elytra wider than the thorax and shorter, wider 

 behind, wider conjointly than long, rather coarsely and moderately closely punc- 

 tate, very sparsely pubescent, shining ; abdomen very sparsely punctate, punctures 

 finer than those of the elytra, sparsely pubescent ; beneath a little more closely 

 punctured than above. Length .18 — .20 inch; 4.5 mm. 



Male. — Tarsi filiform; last ventral with a feeble emargination surrounded by a 

 triangular impression. 



J?'ema/e.— Tarsi filiform; last ventral entire. 



This species is conspicuous by its short elytra, it otherwise resembles 

 some of the brownish forms of nigritulni<. While the normal number 

 of dorsal punctures is four I find considerable variation in the small 



