COLEOPTEUA. 145 



It will be noticed that there is a very marked difference in the 

 structure of the antennae in the present group and tliat containing 

 crassns and versicolor. 



C. OCCUltus n. sp. — Form rather robust, oval. Color black ; elytra near 

 the hiiiueri sliglitly reddish, and also paler and reddish narrowly ah)ng the 

 apices ; pronotum much paler in a narrow border along the base ; abdomen 

 piceous-black, apices of the segments narrowly trauslucent and bright fulvous 

 by transmitted light, scarcely paler by reflected light, terminal segment not 

 paler ; pubescence rather sparse, coarse and somewhat unevenly distributed, 

 pale yellowish-cinereous. Head much wider than long, rather convex, 

 highly polished, very feebly and minutely punctulate ; eyes small, not 

 prominent; antennae slightly shorter than the head and prothorax together, 

 two basal joints pale testaceous, remainder dark piceous-brown, terminal 

 joint paler, joints rather strongly compressed toward tip, basal joint rather 

 robust, two and one-half times as long as wide, narrowed toward base, bear- 

 ing two short black setae near the tip, second slightly more slender, oval, 

 third scarcely as long as the second, very slender, narrowed toward base, 

 fourth slightly shorter and wider than the third, slightly more than twice as 

 long as wide, much broader at base than the third, joints five to ten decreas- 

 ing very slightly in length a7id increasing in width, the former very slightly 

 shorter than the fourth, about two-thirds longer than wide, the latter about 

 as wide as long, sides rather strongly convergent to the bases, basal angles 

 very slightly rounded, eleventh distinctly shorter than the ninth and tenth 

 togetlier, scarcely more than one-half longer than wide, feebly constricted 

 near the tip which is obtusely but not appreciably obliquely rounded. Pro- 

 thorax widest at the base where it is scarcely one-fourth wider than long ; 

 sides very evenly and rather strongly arcuate ; apex broadly and distinctly 

 arcuate, very slightly more than one-half as long as the base which is broadly 

 and feebly arcuate and feebly sinuate toward the basal angles : the latter, 

 viewed laterally, strongly obtuse and rather broadly rounded ; sides straight 

 toward the apical angles which are nari'owly rounded ; disk very strongly 

 convex, highly polished, finely evenly and very distinctly punctato-asperate, 

 intervals transversely and very minutely strigate. Elytra at base about as 

 wide as the pronotum ; sides feebly convergent posteriorly, slightly arcuate 

 near the humeri, straight near the apices ; together broadly triangularly and 

 feebly emarginate behind ; disk shining, strongly convex, sculpture coarsely 

 and obscurely imbricate, imbrications broader than long, finely and distinctly 

 reticulated, each with a minute but distinct and strongly asperate puncture 

 at base. Abdomen very convex, shining, sculptured like the elytra, iuibri- 

 cations obscure, segments smoother and less punctate toward the apices ; 

 along the sides there are a few short erect black setae, and a cluster of about 

 ten larger and longer ones bristling from the posterior segment ; under sur- 

 face much more coarsely and closely punctate. Legs rather slender, dark 

 reddish-testaceous ; middle femora with four erect spines along the lower 

 edge near the tip, the penultimate much the longest ; posterior femora with 

 three such spiiies, the middle one the longest; middle tibiae fimbriate at tip 

 with short equal closely set spinules, terminated by a single very robust 



