188 BULLETIN 145, UNITED STATES NATIONAL MUSEUM 



tate, and sparsely clothed with short, recumbent, white hairs 5 

 prosternal lobe broad, strongly declivous, and broadly but not very 

 deeply, arcuately emarginate in front; prosternal process broad, 

 the sides parallel to behind the coxal cavities, then obliquely nar- 

 rowed to the apex, which is acute. Tibiae slender, the anterior pair 

 slightly arcuate, and the anterior and middle pairs armed with a 

 short tooth on inner margin at apex. Posterior tarsi slightly 

 shorter than tibiae, and the first joint about as long as the following 

 two joints united. Tarsal claws similar on all feet, cleft near the 

 middle, the inner tooth broad, much shorter than outer one, and not 

 turned inward. 



Length, 8.5 mm. ; width, 2.25 mm. 



Female. — Similar to the male, but differs from it in having the 

 front of head wider, more uniformly reddish purple, and the tibiae 

 not armed with a tooth on inner margin at apex. 



Bedescribed from the male cotype, No. 2 in the collection of the 

 Brooklyn Institute Museum. 



Type locality. — Ramsey Canon, Huachuca Mountains, Ariz. 



DISTRIBUTION 



Arizona : Ramsey Canon, Huachuca Mountains, August 13 ; Palnierly, Cochise 

 County, August 2 (Charles Schaeffer). Schaeffer Canon, Baboquivari 

 Mountains, 5,160-5,500 feet, September 18, 1924 (J. A. G. Rehn and M. 

 Hebard). 



Variations. — Scarcely any variation was observed in the few speci- 

 mens examined, except in size, which varies from 7 to 9 millimeters 

 in length, but frequently the under side of the body is black, with a 

 bluish tinge, and strongly shining, and the pubescence on elytra 

 sometimes more distinct than in others. 



Host. — The larval habits are not known, but Charles Schaeffer has 

 collected the adults on oak (Quercus sp.). 



This species is allied to restrictus Waterhouse but can be separated 

 from that species by the pronotum not being deeply depressed at the 

 middle, the elytra uniformly clothed with short white hairs, and the 

 sexes not differently colored. 



62. AGRILUS VENTRALIS Horn 



Agrilus veiitralis Horn, Trans. Amer. Ent. Soc, vol. 18, 1891, pp. 320-321, 

 pi. 8, figs. 21-22. — Fall and Cockerell, Trans. Amer. Ent. Soc, vol. 33, 

 1907, p. 181.— Chamberlin, Cat. Buprestidae, 1926, p. 84. 



Form small, subcylindrical, vaguely flattened above, moderately 

 shining, uniformly dark brown, with a feebly cupreous or aeneous 

 tinge, and each elytron ornamented with a more or less distinct 

 pubescent vitta ; beneath similar in color to above, but slightly more 

 shining. 



