I ore.] 440 [Sep 19, 



thorax, moderately punctured, at base an impressed puncture sometimes 

 prolonged into a short groove, at apex feebly dilated, basal portion shorter 

 than the apical. Thorax oblong, feebly constricted at apex, sides in 

 front feebly arcuate, at middle nearly straight and slightly divergent, 

 base slightly narrowed and bi-sinuate, surface depressed at sides moder- 

 ately closely punctured, disc at centre frequently impunctured, toward 

 the base coarsely punctured. Elytra elongate, parallel, sometimes 

 narrower than the thorax, surface deeply striate, striae seriately punctured, 

 intervals narrow, at apex flat, finely uni-seriately punctulate, body beneath 

 piceous, shining, coarsely and on the thorax densely punctured. Length 

 .16-20 inch ; 4-5 mm. 



This species has the facies of being the most elongate of the section. 

 The thorax is more sparsely and irregularly punctured, the coarser punc- 

 tures at base being so arranged as to give the ante-scutellar tuberosity the 

 appearance of being prolonged into a carina. The elytra are also less 

 deeply and broadly striate than in the preceding species. 



Occurs more abundantly in the Gulf States. 



C. crenatus, n. sp. 



Black, shining. Rostrum shorter than half the thorax, moderately coarse- 

 ly and deeply punctured, at base feebly canaliculate, apex feebly quad- 

 rangularly dilated and longer than the basal portion. Thorax oblong, 

 anteriorly feebly constricted, sides iii front modtrately arcuate, at middle 

 feebly arcuate or nearly straight, at base narrower, base bi-sinuate, sur- 

 face feebly depressed, coarsely deeply and moderately closely punctured. 

 Elytra not wider than the thorax and twice as long, surface deeply striate, 

 striae deeper and broader at base, moderately coarsely and serrately 

 punctured, intervals convex, narrow, with a single series of very minute 

 punctures. Body beneath black, shining, coarsely and moderately densely 

 punctured. Legs piceo-rufous. Length .16-20 inch ; 4-5 mm. 



This species resembles piniphilus, but the latter has the thorax very evi- 

 dently narrower than the elytra and the punctures moderately distantly 

 placed. 



Occurs in Northern California and Oregon, under pine bark. 



C. impressifrons Boh. Schon. Gen. Cure. IV, p. 1001. 



Black or piceous, shining. Rostrum scarcely as long as half the thorax, 

 sparsely punctured, apical portion very feebly quadrangularly dilated and 

 distinctly longer than the basal portion, vertex with a deeply impressed, 

 puncture slightly above the eyes. Thorax oblong, narrower in front, 

 sides feebly arcuate from apex to base, the latter slightly narrower, 

 bi-sinuate, surface coarsely punctured, at sides slightly more densely, 

 median line at base distinctly cariniform. Elytra not wider than the 

 thorax, moderately convex, deeply striate, striae moderately coarsely and 

 serrately punctured, intervals narrower at base, acute, at apex broader 

 and flat, indistinctly uni-seriately punctulate. Body beneath sparsely 

 punctured. Length .12-14 inch ; 3-3.5 mm. 



