N®RTH AMERICAN COLEOPTERA. 208 



By its color this species is readily known from any other except, pos- 

 sibly, trianfjfufmn, from which it differs by the stouter antennae and ven- 

 tral punctuation. 



Occurs from Washington Territory to the southern part of California. 



I*, cmiriiius n. sp. — Black, shining, legs piceous; antennse slender, as long 

 as the head and thorax, joints all longer than wide; head quadrate, slightly ob- 

 long, hind angles punctured; thorax wider than the head, as wide as long, very 

 distinctly narrowed in front, dorsal punctures rather large, equidistant ; elytra a 

 little wider than the thorax, conjointly nearly square, densely rather finely punc- 

 tulate, sjjarsely pubescent, feebly shining; abdomen densely and very finely punc- 

 tulate with velvety aspect ; beneath more distinctly punctured than above; legs 

 jiiceous, or piceo-testaeeous, anterior and middle coxae testaceous. Length .22 inch ; 

 5.5 mm. 



Male. — Anterior tarsi moderately dilated; last ventral triangularly emarginate 

 and triangularly impressed. 



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



This species makes a gradual approach to the brownish species. From 

 these it may be known by the antennae being at all times piceous, while 

 they have the antennae testaceous at base. 



Occurs from Vancouver to northern California. 



I*. Crotchi n. sp. — Form rather elongate, black, moderately shining; antennae 

 picciiiis. a little longer than the head and thorax, the joints all longer than wide; 

 head orbicular, slightly oval, hind angles sparsely punctured; thorax wider than 

 the head, sub-quadrate, very little narrowed in front, not longer than wide, dorsal 

 imnctures rather fine, equidistant ; elytra a little wider than the thorax, conjointly 

 a little wider than long, moderately densely and finely punctured, sparsely pubes- 

 cent, feebly shining; abdomen moderately closely punctured at the sides of the 

 first three segments, sparsely at the middle of these; on the last three segments 

 the punctures coarser than those of the elytra; beneath a little more coarsely 

 j)unctured than above, the punctures more closely placed along the base and sides 

 of the segments; legs black or piceous, the coxa> piceous. Length .2(5 inch; 6.5 

 mm. 



Male. — Anterior tarsi moderately dilated; last ventral segment with a broad 

 triangular emargination surrounded by a feebly depressed triangular space. 



Fnnale. — Anterior tarsi very narrowly dilated; last ventral entire. 



In the general style of its sculpture this species resembles /i:r>Tf);»PH?j?s ; 

 it is, iiowever, much less punctured beneath. 1 he antennje are slender, 

 as in tn'anyiiliim. The character in the table will distinguish it from 

 (■(I mi mm. 



Occurs from Vancouver to Arizona, more common near Lake Tahoe. 



P. arizunensis n. sp. — Form moderately elongate, black, shining; elj'tra 

 with faint bronze tinge; antennte piceous, not longer than the head and thorax, 

 joints 7-10 as wide as long; head oval, longer than wide, a few coarse punctures 

 behind the eves; thorax wider than the head, oval, slightlv longer than wide. 



