50 BULLETIN 145, UNITED STATES NATIONAL MUSEUM 



clothed with short, recumbent, white pubescence; first segment con- 

 vex at middle and without a median depression; last segment 

 broadly rounded at apex; vertical portions of segments not con- 

 spicuously pubescent; pygidium without a projecting carina. Pres- 

 ternum coarsely punctate, transversely rugose, and clothed with a 

 few short, white hairs; prosternal lobe broad, strongly declivous, 

 and broadly, vaguely, arcuately emarginate in front; prosternal 

 process broad, the sides parallel to behind the coxal cavities, then 

 abruptly narrowed to the apex, which is acute. Tibiae slender, and 

 the anterior and middle pairs armed with a short, arcuate 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 nearly as long as outer one, and turned inward, but the tips 

 distant and nearly equally separated from each other and the outer 

 tooth of the claw. Genitalia not examined. 



Length, 7.75 mm. ; width, 2.25 mm. 



Male. — Differs from the female in having the head and pronotum 

 slightly more reddish cupreous, front of head slightly more depressed 

 anteriorly, the epistoma not elevated, the antennae slightly longer 

 and the outer joints more transverse, and the tarsal claws nearly 

 similar on all feet, cleft near the tip, the two teeth nearly equal in 

 length, but the claws on posterior pair slightly more deeply cleft. 



Redescribed from the female type in the collection of H. C. Fall. 



Type locality. — Rio Ruidosa, White Mountains, N. Mex., at an 

 altitude of 6,500 feet. 



DISTRIBUTION 



Arizona: Oak Creek Canyon, 6,000 feet, July (Snow). Prescott. June 20 

 (Barber and Sehwarz). Chiricahua Mountains, May 30 (Hubbard and 

 Schwarz). 



New Mexico: Rio Ruidosa, Wbite Mountains, 6,500 feet (Townsend). 



Valuations. — No variation was observed in the four specimens 

 examined except in size, which varies from 7.5 to 8.75 millimeters. 



Host. — The type was beaten from Quercus utaliensis (A de Can- 

 dolle) Rydberg (syn. gamoelii Nuttall) by C. H. T. Townsend. 



This species has the tarsal claws toothed in a fashion nearly inter- 

 mediate between those having the inner tooth turned inward and 

 nearly touching that of the opposite side, and those in which the 

 inner tooth is not turned inward. 



14. AGRILUS ARBUTI. new species 



Agrilus species Bukke, Journ. Econ. Ent., vol. 10, 1917, pp. 330-331; U. S. 

 Dept. Agric., Bull. 437, 1917, pi. 8, figs. 3, 6; pi. 9, fig. 2 (no text). 



