282 GEO. H. HORN, M. D. 



narrowly separated and the tip of the prosteraum scarcely perceptibly 

 dilated. In this species also the hind angles of the thorax are 

 rounded, while in the others they are subacute and slightly prolonged 

 backwards. The males are known by an eniargi nation of the fifth 

 ventral segment, which is at bottom either truncate or sinuate, 

 and a small additional segment is visible which belongs to the 

 dorsal series. (PI. Ill, fig. 7). 



The species known to us are distinguished in the following manner : 



Hind angles of the thorax distinct, 

 t^cutellum smooth at tip. 

 Form broadly oval. 



Thorax with an oblique fovea in each hind angle ini>rio. 



Thorax without angular fovea; elytra maculate uiii<cula>tus. 



Form oblong, much depressed. 



Elytra rufous with entire limb narrowly piceous semitectus. 



Scutellum densely punctured. 



Form oblong; color uniformly piceous Uliicolor. 



Hind angles of thorax obtuse, rounded. 



Form oblong oval, depressed truncatiis. 



These species all belong to the fauna of the Atlantic region, but 

 truncatus occurs also on the Pacific. 



C.yucc3e, and agavensis Crotch, do not belong to the genus, the former 

 will be found in Carjjophilus, the latter in the preceding tribe. 



C. inorio Erichs. — Broadly oval, depressed, piceous black, moderately 

 shining, sparsely pubescent. Head coarsely and moderately densely punc- 

 tured. Thorax more than twice as wide as long, sides arcuate, apex emar- 

 ginate, base sinuate on each side, twice as wide as apex, surface feebly convex, 

 coarsely and moderately densely punctured, a vague depression each side of 

 the scutellum and a deeper oblique impression in each hind angle, the latter 

 rectangular. Scutellum coarsely punctured, smooth at apex. Elytra con- 

 jointly wider than long, moderately densely and coarsely subseriately punc- 

 tured, apices separately arcuate. Abdomen above less coarsely punctured 

 than the elytra. Body beneath piceous. Prosternum very sparsely punctate, 

 body and abdomen sparsely punctate, on the last segment more densely. 

 Legs rufous. Length .16 — .20 inch; 4 — 5 mm. 



The males have the last ventral segment broadly but feebly emar- 

 ginate, the emargination straight at bottom ; a small additional seg- 

 ment is visible. 



This species is at once known by its broad form and the oblique 

 impression in the basal angles. 



Widely distributed in the Atlantic region. 



C niaculatus Erichs. — Broadly oval, depressed, sparsely pubescent, 

 margin of thorax and four spots on each elytron rufous. Head and thorax 

 as in morio but without the oblique angular impression. Scutellum sparsely 



