NORTH AMERICAN BUPRESTID BEETLES 313 



segment convex at the middle, and the presternum not clothed with 

 long erect hairs. 



Length, 5.5 mm. ; width, 1.5 mm. 



Type locality. — Williams, Ariz. 



Type and allotype.— Oat, No. 41014, U.S.N.M. 



Described from two specimens, male and female. The male type 

 was collected at the type locality, July 9, by H. S. Barber and E. A. 

 Schwarz, and the allotype is simply labeled "Arizona, Calder 

 Collection." 



This species resembles imbellis Crotch very closely, but can be 

 separated from that species by having the prosternal lobe arcuately 

 emarginate in front, eyes slightly more acutely rounded beneath than 

 above, the outer joints of the antennae longer than wide, and also by 

 the shape of the male genitalia. 



110. AGRILUS ABDITUS Horn 



Figure 86 



Agrilus abditus Hobn, Trans. Amer. Ent. Soc, vol. 18, 1891, pp. 332-333. — 

 Chamberlin, Cat. Buprestidae, 1926, p. 46. 



Female. — Form similar to egemes, but slightly more robust, slightly 

 flattened above, and feebly shining ; head uniformly brownish cupre- 

 ous; pronotum and elytra dark brown, with a distinct aeneous or 

 cupreous tinge ; beneath similar to above but more shining. 



Head with the front rather wide, slightly convex, about equal in 

 width at top and bottom, the lateral margins nearly parallel to each 

 other, and with a narrow, shallow, longitudinal groove extending 

 from the occiput to epistoma; surface feebly, sparsely punctate, 

 slightly rugose, feebly shining, and not distinctly pubescent ; epistoma 

 slightly transverse between the antennae, and broadly but not very 

 deeply, arcuately emarginate in front; antennae extending to about 

 middle of pronotum, serrate from the fifth joint, and the outer 

 joints slightly wider than long; eyes rather large, elongate, and 

 slightly more acutely rounded beneath than above. 



Pronotum slightly wider than long, about equal in width at base 

 and apex, and widest near middle; sides feebly, arcuately rounded 

 from apical angles to behind middle, then more strongty narrowed 

 to near the base, where they are parallel, and the posterior angles 

 rectangular; when viewed from the side the marginal carina is 

 feebly sinuate, the submarginal carina nearly straight, the two 

 earinae not very widely separated anteriorly, and connected to each 

 other behind the middle; anterior margin rather strongly sinuate, 

 with the median lobe strongly, broadly rounded ; base acutely emar- 

 ginate at middle of each elytron, the median lobe broadly rounded, 



