NORTH AMERICAN COLEOPTERA. 23 



sparsely on the prosternuin ; marginal groove deep, not wider behind, triangle 

 of the propleurse almost twice as long on the outer edge as at base ; legs bright 

 reddish brown. Length .30 inch ; 7.5 mm. 



This species is also unknown to nie in nature. From the descrip- 

 tion it seems to resemble very closely Fornax hacUm. 



Collected at Canandaigua, New York, by I'abbe de Marseul. 



D. pusillu!i» u. sp. — Form oblong, rather slender, distinctly narrower behind, 

 piceous black, moderately shining, sparsely clothed with short brownish pubes- 

 cence ; antennse ferruginous, a little darker externally, as long as half the body, 

 second joint a little shorter than the fourth, third a little longer, joints four to 

 ten feebly serrate, all longer than wide, gradually longer, eleventh more slender, 

 nearly as long as the preceding two ; head convex, moderately densely punctate, 

 interocular carina interrupted at middle ; clypeus very narrow at base, less than 

 one-fourth the apex and a third the distance to the eyes ; thorax broader than 

 long, sides feebly sinuate and gradually narrowed from the base to the apex, 

 disc convex, a slight fovea each side of middle of base, median line a little 

 smoother posteriorly and slightly elevated, surface coarsely not densely punc- 

 tured at middle, more densely and roughly at the sides ; elytra with a fine su- 

 tural stria and vague traces of strise in the basal depression, the surface a little 

 less densely and less coarsely punctured than the thorax ; body beneath rather 

 coarsely and moderately densely punctured, outer side of triangle of propleurse 

 one and a half times the length of the base ; antenna! groove deep, sharply 

 limited, not more than a third the width of the triangle ; mesopleurfe very 

 sparsely punctured ; tibise and tarsi ferruginous, femora darker. Length .14 

 inch ; 3.5 mm. 



This little species has a facies totally different from all the Dro- 

 mseolus in our fauna. It is of the size and form of the male of 

 Deltometopus amoeniconus, and it would have been placed in that 

 genus in relation with the Brazilian fallax, except that the antennal 

 grooves are as in Dromgeolus. The triangle of the propleurae is not, 

 however, as long as is usual in the latter genus. Considering the 

 extremely close relationship of the genera Deltometopus, Dromaeolus 

 and Fornax, this species is better placed in the second. It is much 

 the smallest species in our series and is equaled in this respect by 

 dllufipes and Funckli, both of which belong to the series with the 

 prosternal sutures closed in front. By the table given by Bonvou- 

 loir the species would be placed near f rater and propinquus, both of 

 which are comparatively large species and differ otherwise. 



A specimen, female, in the cabinet of Dr. LeConte has the thorax 

 larger, that is, the sides are less narrowed to the front and more ar 

 cuate, differing, in fact, from the male as the two sexes of Deltome- 

 topus amoenicornii difier. 



One specimen, S , Northern Illinois, kindly given me by Mr. 

 Fred. Blanchard, a 9 in cabinet of Dr. LeConte from Texas. 



