20 BULLETIN 145, UNITED STATES NATIONAL MUSEUM 



Redescribed from a male and female cotype donated to the United 

 States National Museum by Mr. Dury. 

 Type locality. — Cincinnati, Ohio. 



DISTRIBUTION 



Indiana: Warren and Posey Counties, June 9 to July 23 (recorded by Blatch- 



ley, 1910). 

 Iowa: Ames, June 26 (L. S. Wells). 

 Kkntucky: Louisville (Chas. Schaeffer). 

 Mississippi: No definite locality, reared (M. W. Blackman). 

 Ohio: Cincinnati, June-July (Chas. Dury). Columbus, July 6-August 19 



(J. N. Knull). 

 Texas: Columbus, June 17 ( ). Gainesville, June 17 (B. E. Russell). 



Variations. — This species varies from 8.75 to 10 millimeters in 

 length. The examples from Texas are more uniformly bronzy 

 brown, and without any purplish tinge, the pubescence on the elytra 

 is slightly more distinct, and the surface of the pronotum is more 

 strongly, transversely rugose. In the specimens from Texas and 

 Iowa the tips of the elytra are not very strongly prolonged, and the 

 projection of the pygidium is truncate at the apex, whereas in the 

 specimens from the type locality the carina is deeply emarginate. 

 The example from Columbus, Tex., has the pubescence on the sides 

 of the pronotum and abdomen of a distinct yellow color. 



Host. — The larvae of this species live in the twigs of hackberry 

 (Celtis occidental's Linnaeus). 



2. AGRILUS NEVADENSIS Horn 



Agrihis nevadensis Horn, Trans. Amer. Ent. Soc, vol. 18, 1891, pp. 303- 

 304. — Schaeffer, Brooklyn Inst. Mus., Sci. Bull., vol. 1, no. 6, 1905, p. 

 131. — Chamberlin, Ent. News, vol. 28, 1917, p. 169 (probably wrong 

 identification). — Good, Ann. Ent. Soc. Amer., vol. 18, 1925, p. 272, pi. 

 11, fig. 45 (probably wrong identification). — Chamberlin, Cat. Bu- 

 prestidae, 1926, p. 71 (in part). — Essig, Insects Western North Amer., 

 1926, p. 403 (probably wrong identification). 



Female. — Form large, elongate, strongly flattened above, sub- 

 opaque, uniformly black, with a more or less greenish and violaceous 

 tinge, the violaceous tinge more distinct on front of head; beneath 

 strongly violaceous on the median parts, with a greenish tinge toward 

 the sides, and more shining than above. 



Head with the front wide, nearly flat, about equal in width at 

 top and bottom, the lateral margins feebly, arcuately expanded near 

 vertex, and with a rather broad, shallow depression extending from 

 the occiput to middle of front ; surface rather densely, coarsely, trans- 

 versely rugose, sparsely, coarsely punctate between the rugae, with a 

 vague fovea on each side of the middle, and sparsely clothed with 

 moderately long, semierect, whitish hairs; epistoma transverse be- 



