Coleopterological Notices, VI. 567 



oompletely wanting. Head three-fourths as wide as the prothorax, slightly 

 convex, wider than long, feebly and coarsely reticulate, the punctures exceed- 

 ingly minute and sparse; impressions nearly o1)solete; epistoma very short; 

 labrum small, strongly rounded; eyes rather small, moderately prominent; 

 antennic short, slightly longer than the prothoi'ax, incrassate toward tip, the 

 last three joints especially Avider, penultimate transverse, fifth very feebly 

 dilated. Prothorax three-fifths wider than long, the sides strongly rounded 

 toward liase, strongly convergent and nearly straight toward apex, the basal 

 angles very obtuse but not completely obliterated, the apical blunt; apex much 

 narrower than the l)ase, the latter broadly arcuate; disk feebly reticulate, 

 finely and sparsely punctate, more coarsely but not strongly reticulato-rugose 

 toward the sides, the impressed submarginal line distinct toward Ijase. Elytra 

 three-fifths longer than wide, two-fifths wider than the prothorax, convex, 

 parallel, feebly dilated and with the sides slightly arcuate except toward base; 

 apex rather strongly rounded ; sutural angles obtuse, the apical edge finely 

 serrulate and just visibly subexplanate; punctures fine liut strong and not 

 dense, the interspaces polished. Abdomen sparsely but distinctly cinereo- 

 pubescent. Length 1.5-1.75 mm.; width 0.6-0.75 mm. 



Arizona. 



The description is drawn from tlie female, tliat sex liaving the 

 fifth ventral much longer than the fourth, triangular, with the 

 apex narrowly subtruncate ; the male is more slender, with the 

 head four-fifths as wide as the prothorax, the sides of the latter 

 parallel and broadl}* arcuate, and the fifth ventral broadly trape- 

 zoidal and feebly flattened toward the apex, which is broadly 

 arcuato-truncate. Numerous specimens. 



4. D. iucoiispicuus n. sp. — Narrow, subcuueiform, moderately convex, 

 polished, black, the elytra just perceptibly picescent ; femora black, the tibiae 

 and tarsi piceo-ruf ous ; antennic black, the funicle slightly piceous toward base, 

 the second joint pale; pubescence very short, sparse, closely decumbent, dark 

 brownish-cinereous in color and scarcely obvious under low power; erect setse 

 wanting, the marginal cilia scarcely at all visible. Head three-fourths as wide 

 as the prothorax, wider than long, feebly convex, rather strongly but coarsely 

 reticulate, the punctures not distinct; frontal impressions subobsolete; epi- 

 stoma moderate in length, the labrum strongly rounded; eyes rather small, 

 slightly prominent; antennae short though distinctly longer than the prothorax, 

 feebly and evenly incrassate toward tip, the penultimate joints transverse. 

 Prothorax two-thirds wider than long, the sides somewhat strongly rounded 

 toward base, convergent and straight or very feebly sinuate toward apex; apex 

 and base equally and feebly arcuato-truncate, the former slightly the narrower; 

 apical angles obtuse but distinct, the basal very broadly obtuse and obliter- 

 ated; disk feebly reticulate, finely and sparsely punctate, the submarginal 

 impressed line distinct toward base, the surface thence to the lateral edges a 

 little more reticulato-rugose. Elytra barely three-fifths longer than A\ide, one- 



