Feb., 1915 Bulletin of the Brooklyn Entomological Society 21 



deeply and moderately closely punctured and with a small and 

 elongated crista in median line at base sometimes perceptible. 



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

 deeply striate, stride 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 black or piceo-rufous. 



Length 3.5-5.5 mm., breadth 1.25 mm. 



This beetle occurs in Oregon, Northern California, along the 

 western flanks of the Sierras, in the San Bernardino Mts., in Ari- 

 zona, WilHams (Wickham) and the Huachuca Mts. (Wenzel), 

 New Mexico (Knaus), and on Mt. San Pedro Martir, Lower Cal. 

 It is found beneath the bark of dead yellow pines {Pinus ponderosa 

 Law.), Jeffrey pines {Pinus yVj^rn'«'Lem.), lodge pole pines {Pinus 

 contorta var. murrayana Engel.), and no doubt other pines. It 

 seems to prefer the areas of the logs that are somewhat dryer 

 than those frequented by C. ponderosce. This species could only 

 be confused with one western species, C. ellipticollis, from which 

 the peculiarities of rostrum and thorax will readily separate it, 

 and with the eastern C. corticola Say. Typical specimens from 

 California can be readily separated from the latter by the coarse 

 and cribrate thoracic punctures, the more dilated apex of the 

 rostrum and the antennal structures; the less typical Arizona 

 specimens with their finer thoracic punctures, best by the rostrum 

 and antennal structures. The proportionately larger club of C. 

 crenatns Horn seems to be a reliable character. The two species 

 are however related. 



C. corticola Say. Cure. N. A., p. 24; Say, collected works, 

 Ed. Lee, I, p. 291 ; Boh. Schon. Gen. Cure, IV, p. 1005 ; Horn, 

 Proc. Am. Phil. Soc, XIII, 2 Z, p. 439; Champion, Biolog. 

 Centr. Am. Insecta, Col. IV, Pt. 7, p. 48; B r op hiatus minor Wo\l, 

 Trans. Ent. Soc. Lond., 1873, p. 627. 



Black, somewhat shining. Head finely and sparsely punctured, 

 more coarsely and closely between the eyes and basal portion of 

 rostrum, somewhat finer on apical portion ; eyes quite prominent. 

 Vertex with a deeply impressed and somewhat elongate puncture 



