10 MISC. PUBLICATION 4 7 0, TJ. S. DEPT. OF AGRICULTURE 



Head uniformly brownish cupreous, with a narrow, longitudinal carina on 

 occiput, the carina slightly bifurcate anteriorly, and with two irregular, elon- 

 gate, smooth spaces on the vertex ; front slightly convex, shallowly, broadly, 

 longitudinally depressed at middle ; surface coarsely, irregularly, deeply punc- 

 tate, coarsely scabrous behind clypeus, the intervals finely granulose; clypeus 

 sinuate in front, with a vague median tooth. Eyes separated from each other 

 on the occiput by less than half their width. Antenna short, piceous, with a 

 faint cupreous tinge, narrowed to apex ; intermediate segments compact, slightly 

 wider than long, broadly rounded at outer margins, and each with a long 

 whitish hair; third segment slightly longer than the following two segments 

 united. 



Pronotum nearly twice as wide as long, narrower at apex than at base, 

 widest at base ; sides arcuately diverging from anterior angles to posterior 

 angles, these obliquely prolonged ; base slightly emarginate on each side, the 

 median lobe slightly produced and broadly rounded ; disk moderately convex, 

 narrowly, transversely depressed at basal third, with a distinct, oblique carina 

 at the posterior angles ; surface coarsely, deeply, irregularly punctate, coarsely 

 rugose at sides, with a longitudinal, smooth, median space, and the intervals 

 finely granulose. 



Elytra distinctly wider than pronotum, twice as long as wide; sides nearly 

 parallel from humeral angles to middle (vaguely constricted in front of middle), 

 then arcuately converging to the tips, which are separately acutely angulated; 

 disk moderately convex, vaguely depressed in front of middle, with vague 

 basal and humeral depressions ; surface glabrous, densely, finely punctate, 

 more or less rugose basally and at sides ; each elytron with four vague, sinuate, 

 longitudinal costae, the costae more obsolete posteriorly, and with a cupreous 

 spot at base, and two obsolete, transverse, zigzag, cupreous fasciae, these with 

 more or less distinctly greenish margins. 



Abdomen beneath sparsely, finely fossulate-punctate, with fine, transverse, 

 sinuate lines on basal sternites, nearly glabrous, the intervals finely granulose; 

 last visible sternite broadly truncate at apex, with the angles slightly produced ; 

 eighth tergite broadly rounded at apex, longitudinally carinate at middle, 

 lateral margins elevated posteriorly, the surface finely punctate, densely granu- 

 lose, and sparsely clothed with long, erect, black hairs. Prosternum glabrous, 

 sparsely, coarsely punctate, slightly rugose anteriorly; anterior margin trun- 

 cate. Anterior tibia feebly arcuate, the middle and posterior tibiae straight, 

 and all tibiae armed with a number of small teeth on their inner margins. 



Length 17 mm., width 7.5 mm. 



Female. — Similar to the male but differing from it in having the tibiae un- 

 armed on their inner margins. 



Kedescribed from a male and female in the United States National 

 Museum, collected in copula on huisache at Victoria, Tex., July 27, 

 1915, by J. D. Mitchell. 



Type locality. — Of calcarata, near Zimapan Mines, Mexico; type 

 in British Museum. Of fulgurata, "Mexico"; type supposed to be 

 in the Zoological Museum of the University of Helsingfors. Of 

 lebasi, Cartagena, Colombia.; type supposed to be in the Rene 

 Oberthiir collection. 



DISTRIBUTION 



From material examined: 



Arizona: Tucson, August 12-24 (H. F. Wickham). Bill Williams Fork, August 



(F. H. Snow and E. G. Smyth). Sabino Canyon, October (G. Hofer). 



Phoenix (Mason collection). 

 Texas: Brownsville, June (H. F. Wickham). Victoria, July 27, 1915 (J. D. 



Mitchell). Cameron County, September. Kingsville, January 1921, reared 



(J. C. Bridwell). 

 Mexico: Chacoj, Vera Paz (C. O. Waterhouse). Pureza, Vera Cruz, October 



20, 1935 (J. Camelog). 



Also recorded in the literature as follows : 



Arizona: Yuma (Wickham 1898). Florence (Chamberlin 1926). 

 California: Desert region of southeast (Fall 1901). 



