NORTH AMKRICAN COLEOPTERA. 203 



G. piibesct'Mxi Fub., Gen. Ins. Mant. 1777, p. 220; Let'., Mem. Liege, xi, p. 

 122. 

 hirsulus Gmel. ed. Linn, i, 4, p. 1703. 

 hirtiis 01., Ent. vi, 1808, p. 906, pi. i, fij;. 16. 

 pini Say, Jour. Acad, v, p. 295; ed. Lee. ii, p. 341. 

 Median line of front sometimes smooth, not impressed. Thorax transverse, 

 widest at middle, slightly narrower at base, very coarsely and closely punctate. 

 Elytra moderately coarsely and closely punctate, the pubescence bicolored, cine- 

 reous and brown iiairs intermixed. Length .31 — .38 inch. ; 8 — 9.5 mm. 



This species and the preceding have a concavity surrounding tlie 

 scutellum. The claws are cleft near the middle, and in ilhidri^ about 

 a third from the tip. 



Occurs from the Middle States region to North Carolina. Crotch 

 adds Oregon, but this is doubtful. 



G. barbata Say, Jour. Acad, v, p. 296; edit. Lee. ii, p. 341.--Head very 

 coarsely punctured, head not impressed. Thorax very coarsely and closely punc- 

 tured, widest at middle, base slightly narrower. Elytra very coarsely and closely 

 punctate. Vestitnre of entire surface not dense, ferruginous. Length .22 — 30 

 inch. ; 5.5 — 7.5 mm. 



Similar in appearance to ptibescens, but somewhat more robust and 

 without circuMi-scutellar depre.ssion. The claws are strongly cleft. 

 Occurs in the northern Atlantic region. 



G. alternala Crotch, Proc. Acad. 1S73, p. 36. — Head moderately closely 

 pun(;tate, front not impressed. Thorax broad, base slightly broader than the 

 middle, moderately coarsely and closely punctate. Vestiture of head and thorax 

 nearly white and moderately dense. Elytra closely punctate, with whitish hairs 

 in vittse, the alternate lines brownish and less densely placed. Length .24 — .38 

 inch. ; 6 — 9.5 mm. 



The claws are feebly cleft at middle. Differs from all our species 

 by the alternating color of the vittre of the elytra. 



Occurs in Owen's Valley, Cal., and Wyoming. The latter speci- 

 mens are smaller. 



G. albi<la Lee, Proc. Acad. 1S.59. p. 81; loiigior Lee . Bull. U. S. Geol. Surv. 

 iv, p. 462. — Head not densely punctate, front feebly impressed. Thorax slightly 

 variable in form, usiuilly broader than long, sometimes as long as wide, coarsely 

 and closely punctate and rather densely clothed with whitish hairs. Elytra 

 closely punctate and similarly clothed. Length .16 — 32 inch.: 4 — 8 mm. 



The claws are moderately strongly cleft at middle. G. longior 

 Lee. is placed as a .synonym without any hesitation, the variation in 

 the form of the thorax is gradual. The pubescence is vorv easily 

 removable. 



Occurs in California, Oregon, Nevada and Idaho. 



TRANS. AM. ENT. SOC. XIX. JULY, 1S92. 



