Feb., 1915 Bulletin of the Brooklyn Entomological Society 13 



Horn as impressifrons Boh. and which is generally found in 

 American collections as such. It was placed under impressiis 

 Boh. by Champion. It is readily separated from our Eastern 

 species by its very distinct thoracic carina and from the Pacific 

 species in the group having a convergent thorax, by its smaller 

 size, generally lighter color and broader thorax. Its carina is als.o 

 longer than is usual in any of the Pacific species. 



C. ponderosae n. sp. Black, somewhat shining. Head finely 

 and sparsely punctured posteriorly, more coarsely and closely be- 

 tween eyes and base of rostrum, and finer again at apex of ros- 

 trum. Eyes not prominent, barely protruding beyond the sides 

 of head, vertex with a deeply impressed and almost circular punc- 

 ture slightly above the eyes, diameter of head across eyes one 

 third greater than greatest breadth of rostrum. Rostrum about 

 half the length of thorax, basal portion about equal to apical, as 

 long as broad, with straight sides which are hardly divergent for- 

 wards, apical portion abruptly dilated, but only slightly broader 

 than basal, quadrilateral, and slightly broader than long. Joints 

 of funicle of antennae gradually increasing in width outwards, the 

 outermost about as broad as half diameter of club. 



Prothorax slightly longer than broad, base bisinuate, sides con- 

 stricted at base, rounded and broadest just in front of base, almost 

 straight and slightly convergent to near apex where well rounded 

 to constricted apex. Surface convex on sides and somewhat flat- 

 tened above, coarsely, regularly and moderately closely punctured 

 at sides, more finely at outer portion above and still more coarsely 

 in median portion, especially at base where also closer. Basal 

 portion at middle slightly depressed but with small area just in 

 front of scutellum elevated but not cariniform. 



Elytra distinctly wider than thorax, surface slightly convex, 

 deeply striate, coarsely punctured, punctures coarser and deeper 

 at base, intervals slightly convex, very minutely uniseriately 

 punctured. 



Body beneath sparsely and more finely punctured in median 

 line, more coarsely and closely at sides and in front. 



Length 6.5 mm., breadth 1.5 mm. 



Type in my own collection, paratypes in U. S. Nat. Mus. and 



