REVISTON OF ELEODIINT BLAISDELL. 167 



Habitat. — Texas (Brownsville, June, Hubbard and Schwarz, H. F. 

 AYickliam ; Bosque County, G. W. Belfrage ; San Diego, May, E. A. 

 Schwarz; Beeville, April; San Antonio, June, H. Soltau; Dallas; 

 Dimmit County, Hubbard and Schwarz) ; New^ Mexico (Dr. George 

 Horn); Mexico (Mirador, Salle; Rinconado, Hoge). 



Number of specimens studied, 45. 



Type is in the Sober collection; of seiiata in the LeConte collec- 

 tion. 



Type-locality. — Mexico (Sober); Texas (LeConte). 



Sali< nf type-characters. — Subopaque. Thorax quadrate, slightly 

 narrowing anteriorly, sides feebly rounded; apical angles acute; 

 basal angles obtuse and not rounded. Elytra with the base broadly 

 emarginate, humeri acute, strongly striato-punctate, intervals irregu- 

 larly, finely and sparsely punctulate {ser/afa, LeConte). 



Diagnostic characters. — Distinct by its coarse punctuation, which 

 consists of distinct rows of coarse punctures or dents in which the 

 punctures are distinctly visible. The elytra are very convex and 

 normally Avithout any semblance of even an obtuse margin. Many 

 examples have the serial punctures fine, and these are frequently con- 

 founded Avith soror (see carhonaria vnr. soror). 



The basal joints of the anterior tarsi in the males are more strongly 

 modified than in any other species of the subgenus. 



Any single locality does not appear to produce any particular form 

 of punctuation; the most strongly sculptured specimens before me 

 were collected by Belfrage in Bosque County, Texas. 



Specimens from Mexico do not differ from those taken in Texas. 



The mentum is variable; surface convex, coarseh^ punctate and at 

 times more or less excavated laterally. 



Prosternum more or less evenly arcuate from the anterior margin 

 to the tip of the intercoxal process; at times more or less horizontal 

 between the coxa\ All of the specimens examined have the ])rosterna 

 strongly and triangulo-conically mucronate behind. 



Mesosternum at times obliquely subhorizontal or feebly arcuately 

 oblique, rarely vertically arcuate, always more or less strongly 

 concave. 



The grooves of the anterior femora are inwardly attenuate, about 

 reaching the base; those of the mesofemora extending inwards to 

 about the basal third, while on the metafemora they reach only to 

 about the middle. The anterior margins of the anterior grooves are 

 scarcely carinate, except in the external sixth, where the teeth are 

 developed. 



The tibiae are not compressed and not in the least carinate ex- 

 ternally, and the tarsal grooves are obsolete. 



