204 MISC. PUBLICATION 1 4 70, U. S. DEPT. OF AGRICTJLTUREi 



Figure 85. — Anterior tibia of male (A), clypeus (B), and last visible abdominal 

 sternite of male (C), and of female (D) of Chrysobothris acutipennis. 



rectangular ; anterior margin slightly, arcuately emarginate, with a vague median 

 lobe ; base arcuately emarginate on each side; median lobe slightly produced, and 

 vaguely, arcuately emarginate in front of scutellum; disk moderately convex, 

 with three more or less distinct, shallow depressions on each side; surface 

 sparsely, coarsely, irregularly punctate, sparsely clothed with short, recumbent, 

 whitish hairs, intervals obsoleteiy granulose. Scutellum long, acute posteriorly. 



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

 from humeral angles to apical third, then arcuately converging to tips, which are 

 separately acutely produced ; lateral margins coarsely serrate ; surface glabrous, 

 finely, densely, irregularly punctate, confluently punctate in foveae. Each elytron 

 with four more or less distinct, smooth, longitudinal costae ; first extending from 

 apex to near base, strongly elevated on apical half, becoming obsolete near base ; 

 second moderately elevated, extending from middle to near apex; third short, 

 interrupted by postmedian fovea ; fourth following outline of lateral margin, 

 distinctly elevated posteriorly, but becoming obsolete toward humerus ; and with 

 two large, distinct, transverse foveae, one in front of middle between first and 

 third costae, the other at apical third between first and fourth costae. 



Abdomen beneath sparsely, coarsely, irregularly fossulate-punctate, sparsely 

 clothed with short, recumbent, whitish hairs, without lateral callosities, intervals 

 obsoleteiy granulose; last visible sternite deeply, semicircularly emarginate at 

 apex, with the angle on each side broad, slightly emarginate and acutely produced 

 externally, the surface broadly, longitudinally concave at middle, the concavity 

 limited on each side by a longitudinal carina, and with a slightly elevated, serrate, 

 submarginal ridge, lateral margins not serrate ; eighth tergite coarsely, sparsely 

 punctate, broadly subtruncate at apex. Prosternum broadly depressed behind 

 anterior margin, sparsely, finely, irregularly punctate, sparsely clothed with long, 

 semierect hairs ; anterior margin deflexed, subtruncate, without a distinct median 

 lobe. Anterior femur with a short, obtusely rounded tooth, which is slightly 

 crenulate on outer margin. Anterior and middle tibiae strongly arcuate, each 

 armed with a number of minute teeth on inner margins ; posterior tibia straight. 



Length 14 mm., width 5.25 mm. 



Redeseribed from a male from Brownsville, Tex., in the United 

 States National Museum. 



Female. — Differing from the male in having the front of the head more sparsely, 

 irregularly punctate, with numerous irregular, smooth callosities, the last visible 

 sternite more elongate, longitudinally carina te at middle, broadly, shallowly 

 emarginate at the apex, and with the angles acutely produced, the eighth 

 abdominal tergite more coarsely, densely punctate, and broadly rounded at apex, 

 and the anterior and middle tibiae unarmed on their inner margins. 



