NORTH AMERICAN BUPRESTID BEETLES 41 



which is not projecting. Prosternum finely, densely granulate- 

 punctate, and densely clothed with fine, erect, silky white pubescence ; 

 prosternal lobe broad, feebly declivous, broadly rounded in front, 

 and with an acute emargination at the middle; prosternal process 

 broad, the sides parallel to behind the coxal cavities, and obtusely 

 rounded at the apex. Posterior coxae with the posterior margin 

 broadly, arcuately emarginate. and the exterior angle somewhat 

 acute. Tibiae slender, the anterior and middle pairs feebly arcuate, 

 and armed with a short tooth on the inner margin at apex. Posterior 

 tarsi as long as the tibiae, and the first joint as long as the following 

 three joints united. Tarsal claws nearly similar on all feet, cleft at 

 middle, the teeth acute at tips, about equal in length, and the inner 

 one turned inward. 



Female. — Differs from the male in being more robust, front of head 

 broader, more cupreous, and the surface more coarsely punctured; 

 prosternum sparsely, coarsely punctate, and not pubescent at middle ; 

 tibiae unarmed at apex, and the posterior tarsi shorter than the tibiae. 



Length, 7—13 mm. : width, 1.4^3.5 mm. 



Type locality. — Of difftcilis, " North America " — present location 

 of type unknown to writer; of occidentalism Evansville, Indiana. 

 Type in Museum of Comparative Zoology at Cambridge. Mass. 



DISTRIBUTION 



Arkansas: Marion County. May 29. 1897 ( ). 



Colorado: Cheyenne Wells, September 12, 1927 (S. C. McCampbell). 



Illinois: Paxton, July 30. 1916. on honey locust ( >. Decatur, June 13 



(A. W. Lindsey). 

 Indiana: Evansville (Uhler). Lafayette. June 23. 1917. bred from Prickly Ash 



(J. J. Davis). Marion and Posey Counties. June 19-July 21 (Blatehleyi. 

 Iowa: No definite locality. 



Kansas: Douglas County ( ). 



Kentucky : Louisville ( Soltau ) . 



Louisiana: Tallulah, July 7. 1924 ( ). 



Michigan: Port Huron (Hubbard and Schwarz). 



Missouri : No definite locality. 



Nebraska: Lincoln. April 12, 1915, on honey locust (L. M. Gates). 



Ohio: Cincinnati (Soltau). Columbus, July 4-31. breeding in dead honey 



locust (J. N. Knull). Sandusky, July 6 ( ). 



Tennessee: Elmwood (Fenyes). 

 Texas: Dallas; Tedor (Leng). 



Variations. — This species is quite variable in size and color, and the 

 upper surface varying from a greenish to a reddish cupreous tinge 

 under certain conditions of light. In some examples the lateral 

 margin of the second abdominal segment is nearly obliterated, 

 whereas in others it is quite distinct. The tarsal claws are somewhat 

 variable in both sexes, the inner tooth is usually strongly turned 

 inward and nearly touching that of the opposite side, but occasionally 



