366 Coleopterological Notices, IV. 



the antennae inserted at the middle ; antennae slender, with the basal 

 joint of the funicle about as long as the next four together, the 

 second as long as the next two, differing but slightly in the sexes. 

 Prothorax larger and longer in the male than in the female, one- 

 half wider than long and but slightly narrower than the elytra in 

 the former, three-fourths wider than long and much narrower than 

 the elytra in the latter ; sides strongly arcuate, rounded and con- 

 vergent but not at all constricted near the apex ; disk strongly but 

 not very coarsely punctate, the punctures distinctly separated. 

 Elytra parallel, ogival toward apex, from two-thirds to three- 

 fourths longer than wide, the strial punctures coarse, deep, moder- 

 ately close-set, the intervals feebly convex, minutely, feebly, rather 

 sparsely punctulate. Length 5.0-6.5 mm.; width 2.0-3.0 mm. 



Canada, Indiana and Nebraska. The sexual differences are 

 slightly less pronounced than in brevisetosus and very much less 

 so than in inaequalis, and this species is readily distinguishable 

 from both by the absence of erect setae. In the male the anterior 

 legs are elongated, but the basal joint of the tarsus is shorter than 

 the remainder and about one-half as long as the prothorax. 



4 D. laticollis Lee— Proc. Am. Phil. Soc, XV, p. 164. 



Piceous-black, variegated with small distant spots of rufo-piceous, 

 polished, the vestiture sparse, consisting of short robust and recum- 

 bent hairs, condensed in numerous small paler spots and also toward 

 the sides of the prothorax, without trace of erect setae. Head 

 strongly, not very densely punctate and with a deep frontal fovea ; 

 beak very slender, cylindrical, in the male strongly arcuate, straight 

 toward base, rather finely but deeply, linearly punctate and fully 

 one-half as long as the elytra, very finely, sparsely and inconspicu- 

 ously setose, the antennae inserted just behind apical third, the basal 

 joint of the funicle fully equal to the next three. Prothorax small, 

 transverse, three-fourths wider than long, the sides abruptly rounded 

 and strongly convergent anteriorly, the apex very briefly tubulate 

 and broadly arcuate, three-fourths as wide as the base; punctures 

 deep, perforate but not very large, rather sparse, the median im- 

 punctate area very feebly defined toward the center only; apical 

 margin rufescent. Elytra at base nearly one-third wider than the 

 prothorax, almost four times as long, slightly wider behind the 

 middle, broadly constricted behind the humeri, the strial punctures 

 coarse, deep and close-set; intervals nearly flat, finely but strongly, 



