NO. 1708. .STUDIES OF NORTH AMERICAN WEEVILS— PIERCE. 345 



punctate, punctures very minute, median longitudinal impression 

 sharp and distinct. Elytral strisB extremely fine, feebly impressed, 

 punctures longitudinal and very fine, intervals feebly convex, with 

 two series of setae; elytra twice as wide as prothorax, only one-half 

 longer than wide, evenly rounded from base almost to apex, apex 

 slightly obtusely produced, elytra conjointly rounded. Second 

 ventral segment short, first suture almost straight, third and fourth 

 segments very short, but together greater than second. Hind 

 tibiae with a single row of spinules on apex of corbels, articular sur- 

 face cavernous. Tarsi without pubescence on third joint, which is 

 not broader than the second. 



Type.— C&t. No. 12594, U.S.N.M. 



TOSASTES OVALIS, new species. 



Described from one specimen collected by F. C. Bishopp at Devil's 

 River, Texas, May 3, 1907. Four specimens which are rather rubbed 

 are at hand, collected by J. D. Mitchell and R. A. Cushman at Mara- 

 thon, Texas, June 7, 1908. 



This species resembles T. glohipennis Sharp of Mexico in form, size, 

 and coloration, but differs by the sculpture of the thorax and elytra, 

 and by the double row of spines on the posterior corbels. 



Length 6 mm. Black; elytra very convex, inflated; humeri 

 rounded; clothed with thin grayish scales, polygonally crowded, 

 and on the prothorax fused into a continuous indument, bearing 

 numerous setae, scales not overlapping. 



Eyes narrow and acute beneath. Rostrum short, lightly trans- 

 versely impressed at base, with very faint impressions at sides, but 

 with no median groove; scrobes deep, strongly arcuate, rapidly 

 inferior; scape and first six funicular joints clad with white scales, 

 seventh dark like club without scales, and so closely applied thereto 

 as to appear a part of it. Thorax strongly transverse; ocular lobes 

 distinctly fimbriate; convex on sides with rather deep emargination 

 in front of base and a lighter one before apex; sparsely but deeply 

 and coarsely punctate, median impression vague. Elytral striae 

 fine, punctures rather large and shallow. Elytra twice as wide as 

 prothorax, and only one-half longer than wide. Second ventral 

 segment short, first suture almost straight, third and fourth segments 

 very short, but together greater than second. Hind tibiae with a 

 double row of spinules on corbels, but apex hardly truncate. Tarsi 

 without pubescence on third joint, which is not broader than the 

 second. 



This species has a very different appearance from Ophryastes, 

 because of the greatly inflated elytra, but difi^ers from Tosastes as 

 defined by Sharp in the double row of spinules on the corbels of the 

 posterior tibiae. This last character is not of generic value. 



Type.— Cat. No. 12595, U.S.N.M. 



