Coleopterological Notices, VI. 575 



throughout, pubescence rather long and sparse, even, suberect, blackish and not 

 conspicuous, slightly cinereous to\vard the base of the elytra externally; mar- 

 ginal cilia very short but finibriforni, black. Head very short and strongly 

 transverse, three fourths as wide as the pro thorax, finely and sparselj' punctate 

 and feebly subrugose, the apical margin slightly tumid transversely; epistoma 

 short, with a thin, smooth margin, the lalirum strongly transverse and broadly 

 rounded; eyes rather small and convex, basal; antennse long, slender, filiform, 

 longer than the head and prothorax, the joints slightly elongate, the eleventh 

 very strongly so and gradually pointed. Prothorax three-fourths wider than 

 long, the sides parallel and broadly arcuate, liecoming convergent and straight 

 or feebly sinuate in about apical half, miiuitely sinuate just before the basal 

 angles which are distinct; apical angles obtuse; apex and base feebly and 

 equally arcxiate, the former much the narrower; edges feeblj' serrulate; disk 

 polished, finely and remotely punctulate, the submarginal line distinct 

 throughout and feebly sigmoid, the surface coarsely and deeply reto-rugose at 

 the sides, ^^y^rw three-fifths longer than wide, one-half wider than the pro- 

 thorax, feebly dilated behind Avith the sides arcuate; apex semi- circular; disk 

 rather finely but strongly, sparsely and subrugosely punctate, the interspaces 

 polished. Abdomen thinly clothed with fine plumbeo-cinereous pubescence. 

 Length 2.2-3.2 mm. ; width 0.9-1.35 nun. 



California (Marin and Sonoma Cos.). 



Tiie female is described above, tlie fifth ventral being subcon- 

 ical with the apex snbtruncate. The male is smaller and nar- 

 rower, parallel, with the fifth ventral more broadly arcuato-truncate 

 and the antennae still longer and also thicker. This species is 

 allied to bremusculus, but differs in its larger size, coloration of 

 the legs and antennae and in the more elongate elytra. Many 

 specimens. 



5. D. breviusculUS Motsch. — Bull. JSIosc, 1859, ii, p. 396. 



Stout, convex, cuneiform, polished, black with a very feeble 

 subifineous lustre anteriorly ; femora black, the trochanters, tibiae 

 and tarsi red ; antennte black, the funicle pale at base, the first 

 joint blackish ; pubescence short, fine and sparse, blackish in color 

 and inconspicuous, becoming pale luteo-cinereous on the head, 

 near the basal angles of the prothorax, and toward the base and 

 at the apex of the elytra ; erect hairs wholly wanting. Head 

 four-fifths as wide as the prothorax, obsoletely reticulate, finely 

 and sparsely punctate, the impressions widely separated and 

 almost obsolete ; mandibles pale ; antennae rather longer than the 

 head and prothorax, slender and filiform, the penultimate joints 

 full}- as. long as wide. Prothorax two-thirds wider than long; 

 the sides rounded at basal third, thence distinctly convergent 



