ClCINDELID/E AND CARABIDJE 69 



the surface basally with a moderate impression at outer fifth, thence 

 nearly flat to the angles, scarcely at all reflexed; surface with fine an- 

 astomosing creases, minutely, sparsely punctate, strongly but not densely 

 punctate laterally; median stria distinct, subentire; elytra oblong-oval, 

 a third longer than wide, slightly widest just behind the middle, from 

 which point to the broad humeral rounding they are nearly straight; 

 surface with unimpressed series of very fine and distant punctules, 

 connected with very fine faint and irregular longitudinal and transverse 

 scratches, the intervals vaguely and faintly subelevated by oblique light 

 but without trace of punctuation, the foveae of the three series very small; 

 sides moderately reflexed and with coarse punctures and transverse 

 rugulae. Length ( 9 ) 17.0 mm.; width 8.0 mm. California (Tulare Co.). 



This is the form to which I alluded in describing arcuatus and 

 thought to be dietzi by Mr. Schaeffer, but it is evidently not the 

 same according to the description of that species. 



Callisthenes opimus n. sp. Much stouter and more ventricose, much 

 more shining, deep black, smooth and convex, the margins not colored; 

 head small though fully half as wide as the prothorax, nearly as in the 

 preceding; mandibles closely, anastomosingly strigose; antennae longer 

 and more slender, longer than the thoracic width; prothorax slightly 

 less than twice as wide as long, parallel and evenly rounded at the sides 

 throughout, three-fifths to two-thirds as wide as the elytra, the angles 

 as in the preceding; surface similarly sculptured but very differently 

 impressed, rapidly declivous laterally, with a concave marginal gutter 

 which is broad posteriorly, where the edge is much reflexed, gradually 

 shallower and narrower anteriorly; basal impressions large and deep, 

 divided transversely by a low feeble ridge in the female, somewhat after 

 the manner so strongly developed in the type of Calosoma apacheana, 

 the division not visible in the male; elytra evenly oblong-oval, with 

 slightly less broadly rounded humeri than in tularensis, the sculpture 

 nearly similar, except that the serial punctures are not so minute, 

 perforate, the anastomosing scratches and feeble interstitial elevation 

 obsolete, the foveae very small, cupreous; side margins almost similar; 

 tarsi slender, the posterior two-thirds as long as the tibiae, a little longer 

 in the male. Length 15.5-17.5 mm.; width 7.5-8.5 mm. California 

 (Kern Co.), Hopping. 



Distinguishable at once from the preceding by its more corpulent 

 form, more shining lustre, more evenly rounded sides of the elytra, 

 more reflexed margins of the prothorax, longer antennae and numer- 

 ous other characters; it was received under the name latipennis 

 Horn. 



Callisthenes gravidulus n. sp. Small, strongly convex, ventricose, 

 alutaceous, black, the margins very faintly bluish; head rather more than 

 half as wide as the prothorax, sculptured as in the preceding species, 

 the mandibles more feebly strigose and less closely; antennae much longer 



