234 BULLETIN 14 5, UNITED STATES NATIONAL MUSEUM 



Tarsal claws similar on all feet, cleft near the middle, the teeth nearly 

 equal in length, the inner one turned inward, and the tip nearly 

 touching that of the opposite side. 



Length, 9 mm. ; width, 2.4 mm. 



Male. — Differs from the female in having the antennae extending 

 to middle of pronotum and the outer joints about as wide as long; 

 prosternum densely clothed with long, erect, whitish hairs; anterior 

 and middle tibiae armed with a short tooth on inner margin at apex ; 

 tarsal claws nearly similar on all feet, cleft near the middle, the inner 

 tooth nearly as long as the outer tooth, moderately turned inward, 

 and their tips nearly equally separated from each other and the outer 

 tooth of the claw. 



Redescribed from the female holotype in the collection of H. C. 

 Fall. 



Type locality. — Huachuca Mountains, Ariz. 



DISTRIBUTION 



Arizona: Huachuca Mountains (female holotype) July 14. 1910 (Carl R. 

 Coolidge). Santa Rita Mountains, male (M. Chrisman). 



Variation. — None observed in the two specimens examined. 



Host. — Unknown. 



This species seems to be rare in collections, as only two specimens 

 have been seen. In general appearance it resembles lacustris Le- 

 Conte, but it can at once be separated from any of the known species 

 of the genus by the combination of antennal and tarsal claw char- 

 acters, as no other species with the antennae serrate from the fifth 

 joint has the inner tooth of the tarsal claws turned inward. 



77. AGRILUS GIBBICOLLIS Fall 



Figure 58 



Agrilus aibbicollis Fall, Calif. Acad. Sci., Occasional Papers, no. 8, 1901, p. 



241. — Fall and Cockerell, Trans. Amer. Ent. Soc, vol. 33, 1907, p. 



181. — Woodworth, Guide to California Insects, 1913, p. 195. — Cham- 



berlin, Cat. Buprestidae, 1926, p. 63. 

 Agrilus mercurius Wickham, Canad. Ent., vol. 35, 1903, pp. 70-71 (new 



synonymy). — Fall and Cockebell, Trans. Amer. Ent. Soc, vol. 33, 



1907, p. 181.— Chamberlin, Cat. Buprestidae, 1926, p. 70. 



Female. — Form robust, subcylindrical, feebly shining, and bronzy 

 cupreous ; pronotum and elytra with longitudinal vittae of yellowish 

 white pubescence ; beneath similar in color to above but more shining. 



Head with the front rather wide, only vaguely wider at top than 

 bottom, the lateral margins nearly parallel to each other, and with a 

 more or less distinct groove on the occiput and vertex; surface 

 densely, coarsely punctate, somewhat rugose, and densely clothed 

 with long, recumbent, brownish yellow pubescence, which nearly 



