NORTH AMERICAN COLEOPTERA. 25 



tures absent on the protlumix, not very marked behind, punctuation of the pro- 

 sternum distin(^tiy finer, submarjiiual lines of prothorax sliort and feeble, rarely 

 reaching the middle, prosternal process short, usually moderately flexed, with 

 the marginal lines distinct to apex, but specimens have been observed having 

 the process very much attenuated and the marginal lines quite absent, hind coxal 

 plates moderately to strongly narrowed externally with the angle distinct and 

 rounded, or feeble and strongly rounded. Legs rufous, with the thighs usually 

 darker, tarsi moderate, shorter in the 9 - the first joint about equal to the last. 

 Length .28-.40 inch ; 7-10 mm. 



Mass., N. J., Pa., I. T., Texas. 



Two similar males, one from Indian Territory, the other without 

 locality, have the elytra more deeply striate and the intervals more 

 convex. The union of the lateral and discal pubescence of the ely- 

 tra fre(i[uently forms an oblique line from the humeri to the apex. 

 The females ai"e sometimes exceedingly robust with the thorax very 

 strongly convex. 



30. C seniculiis u. sp. — Very small, slender and subdepressed, black, 

 clothed with coarse, depressed, yellow and white pubescence. Antennae black, 

 second joint small. Head and thorax rather strongly and closely punctulate, 

 thorax not very convex, more narrowed in front, sides rounded and feebly sinu- 

 ate behind, hind angles not evidentlj^ carinate, basal lobe broadly emarginate, 

 feebly bisinuate, basal fissures very short, strictly marginal, the outer rudimen- 

 tary ones not evident, base very deeply impressed each side of the lobe, not im- 

 pressed at middle; elytra depressed, sides parallel, striae feebly impressed, inter- 

 vals flat, punctulate. Body beneath punctulate, pubescent, submarginal lines of 

 prothorax reaching the middle, prosternal lobe short, bi-oadly rounded, posterior 

 process short, strongly flexed, marginal lines not reaching behind the coxa?, the 

 hind coxal plates appear to be narrowed externally with the angles rounded. 

 Legs with the thighs piceous, rufous at base and tip, tibiae rufopic^eous, tarsi paler, 

 fii-st joint shorter than the last. Maxillary palpi dark piceous, the last joint 

 elongate, gradually and moderately dilated to tip, which is subtruucate. Length 

 .20 inch ; 5 mm. 



California. One male. Dr. Horn. 



The single specimen is not in very good condition. The basal two 

 joints of the antennae alone are present. Seems quite unlike any- 

 thing else by the characters above. The male appendages are ex- 

 serted, the central piece is longer, slender and blunt at tip, the lateral 

 pieces broad, gradually narrowed to near the tip and then suddenly 

 narrowed and finely barbed at tip. 



31. <'. dispar n. sp.— Eather slender in the %, 9 robust, black, with fusco- 

 ciuereous pubescence and conspicuous erect bristles. Antennae black, slender 

 and one half as long as the body in the % , in the 9 very short, one-half as long 

 as the head and thorax, finely serrate, with the joints, except first, third and last, 

 not longer than broad ; palpi black, last joint nai row, oval, [pointed at tip. Head 



TRANS. AM. ENT. SOC. XVI. (4) FKBRUARY, 1889. 



