(()<) FAMILY IV. SCOLYTIDJE. 



with joint 4 broader, both basal and lateral margins on the pro- 

 notnm, and obscure or absent stride on tlie elytra. The species 

 are small, like those which precede, and are found in spruce and 

 fir. They have the antennal club compressed, broad, with sides 

 equally rounded, sinuate, apex broadly rounded, with three 

 slightly recurved sutures on anterior face and three broadly pro- 

 curved sutures on posterior face; eyes short, oval, narrowly but 

 distinctly emarginate; declivity of elytra not impressed or 

 toothed, thorax with a few large acute tubercles in front; tarsi 

 with third joint simple. ( Fig. 139, A.) The male is slightly 

 smaller than female, its front narrower. 



SYNOPSIS OF SPECIES OF CKYPHALUS. 



a. Elytra with fine, densely placed scales and sparse, erect, interspacial 



hairs. 



b. Interspacial hairs long. 959. PICE^,. 



bb. Interspacial hairs short, sparse. 



c. Pronotal anterior margin with four teeth. 960. RVBEXTIS. 



cc. Pronotal anterior margin with five teeth. 9G1. FRASERI. 



Off. Elytra with fine, densely placed scales but without interspacial hairs, 



962. BALSAJIEUS. 



959 (- -). CRYPHALVS PICE.B Ratz., 1837, 163. 



Oblong-oval, subcylindrical, convex. Fuscous-brown, pubescent. 

 Thorax semi-orbiculate, transverse, disc scabrous in front with subcon- 

 centric tubercles in rows, granulate-punctate behind. Elytra paler, longer 

 than wide, squamulate, very finely punctured in rows with long erect 

 hairs. Length 1.6 2 mm. 



Canada, West Virginia and New York, according to Swaine 

 (1908), who would perhaps now associate the specimens with 

 rubcntis Hopkins. Europe, in Abies and Picca. (Hopkins.) 



960 (- -). CKYPIIALUS RUBEXTIS Hopkins, 1915-a, 40. 



Oblong, elliptical. Dull reddish-brown; pronotum and head darker. 

 Anterior margin of thorax with four short, equal teeth, pronotal rugosities 

 coarse, sparse, confused. Front flattened, with median shining line, pos- 

 terior and lateral areas faintly punctured. Elytral strife faintly evident 

 on dorsal area. Length, female, 1.8 mm.; male, 1.6 mm. 



Pocahontas Co., W. Va., in I'li-cu nibcnft; May 6. Pocono 

 Lake, Pa., August 12, labelled rubcr by Dr. Hopkins. (W<.'n~el.) 



Felt (1906) identifies as striatulus Mann., known from Alaska and 

 Utah, "a small yellowish-brown to almost black beetle, about 2 mm. in 

 length, occurring in spruce bark, particularly at the base of limbs; also 

 at base of a small hemlock limb the foliage of which had begun to turn 

 brown, and in a small balsam tree." He describes the prothorax as bear- 

 ing a number of prominent chitinous tubercles, and elytra as faintly 



