CoUopterological Notices, VII. 343 



asperate granules. Legs rather short and slender. Length 16.0 mm.; width 

 7.8 mm. 



Nevada (Reno). 



Related rather closely to luxata, but differing in the very un- 

 equal elytral sculpture, less punctured head and other characters. 

 It belongs to the subgenus Callisthenes of Fischer. 



C arciiata n. sp. — Stout, deep black throughout, without metallic reflec- 

 tion at any part except a feeble trace of bluish lustre in the reflexed elytral mar- 

 gins. Head moderate in size, finely, sparsely punctate except anteriorly, and 

 feebly rugose, especially toward the sides, the median parts of the front at a 

 short distance behind the apical margin slightly tumid, a small median im- 

 pression between the tumidity and apex quite distinct ; epistomal impressions 

 deep ; labrum subtruncate at apex, with a feeble sinuation at the middle, the 

 edge thence toward each side also feebly sinuate, the dorsal impression coarsely 

 hairy ; mandibles stout, striato-rugose, punctulate, the apex very acute and 

 much produced internally ; antennae short, barely as long as the head and pro- 

 thorax, the compressed sides of the outer joints only glabrous toward base. 

 Frothorax large, transverse, not quite twice as wide as long, widest slightly before 

 the middle, the sides evenly arcuate anteriorly, becoming slightly less so be- 

 hind the middle to the basal angles, which are broadly arcuate posteriorly and 

 only slightly produced backward, the base transverse ; apex broadly, angularly 

 emarginate, with a coarse flattened bead ; disk broadly and moderately con- 

 vex, broadly explanato-reflexed and broadly impressed toward the basal angles, 

 the marginal bead narrow and strongly reflexed ; surface confusedly creased, 

 minutely and densely punctulate, also finely punctured near apex and base and 

 more coarsely toward the sides, densely in the impressions ; median line very 

 fine. Elytra oval, scarcely j-^ longer than wide, not more than 3^4 wider than 

 the prothorax and but little more than 2^2 times as long ; sides strongly, 

 evenly arcuate, the margins rather narrowly, but strongly reflexed and con- 

 fusedly punctate throughout ; disk very strongly convex, with extremely mi- 

 nutely punctulate series which are feebly impressed toward apex, wholly unim- 

 pressed elsewhere except 3, 4, 7, 8, 11 and 12, which are somewhat impressed 

 throughout ; flanks becoming feebly punctulate toward the marginal concav- 

 ity ; the entire surface is also feebly, transversely and unevenly creased in a 

 scratch-like manner ; three interstitial series not traceable. Legs rather short. 

 Length 18.5 mm. ; width 8.5 mm. 



Arizona. 



This distinct species of the subgenus Callisthenes is to be com- 

 pared only with latipennis of Horn, but differs in the female, the 

 only sex of either known to me, in its shorter and stouter form, 

 with much larger prothorax, which is broadly explanate and re- 

 flexed toward the basal angles, the latter being much more broadly 

 arcuate, in its very much more convex el^^tra with more arcuate 

 sides and more confused marginal punctuation, relatively larger 

 head, and in numerous other features. 



