516 Coleopterological Notices, VI. 



and nearl}' straight toward apex and base, the former arcuato- 

 truneate and narrower than the more arcuate base : basal angles 

 obtuse but distinct and not rounded, the apical obtuse and 

 rounded; lateral edges finely serrulate; disk polished and convex, 

 minutely and remotely punctate, coarsel,y reto-rugose near the 

 sides. Elj'tra two-fifths longer than wide, at posterior third much 

 wider than at base and one-half wider than the prothorax with the 

 sides arcuate ; apex semi-circular; disk convex, finelj' and sparsely 

 punctate, the punctures becoming feeble toward apex. Length 

 2.3 mm.; width 1.1 mm. 



Califoi'nia. The single specimen, w^hicli I took in the coast 

 region north of San Francisco, is a female, and the fifth ventral 

 is broadly rounded and feebly impressed in the middle at the 

 apical margin; the genital segment is large, slightly deflexed, 

 broadl}^ angulate at apex and is feebl}' impressed at the middle 

 of the disk. There can be scarceh' any doubt at all that this is 

 the species of Motschulsky, as it agrees with his description in 

 every essential feature; the species identified by LeConte under 

 the name breviusculus, is however quite a diff"erent thing, which 

 I am unable to place in the absence of the type, but which may 

 possibly be the nitens described above. 



6. I>. dissiinilis n. sp. — Elongate, convex, polished, black with a feeble 

 greenish-reneous histre; legs rufous, the femora l)lack except at apex; anteunie 

 blackish, the second and some of the following joints less distinctly, pale; 

 pubescence suberect, moderately long, cinereous, rather sparse and even, a 

 few hairs toward the elytral sides and apex slightlj' longer than the others but 

 not more erect. Head ^•erv nearly as wide as the prothorax, smooth and bur- 

 nished, minutely and remotelj- j)uuctulate, tlie frontal impressions widely 

 separated, apical and j)ronounced; epistoma short, the labrum broadly rounded; 

 mandibles black; eyes prominent; antennte slender, filiform distinctly longer 

 than the head and prothorax, all the joints longer than wide, the eleventh 

 about as long as the two preceding. Prothorax fully one-half wider than long; 

 sides rounded behind the middle, thence feebly convergent and somewhat sin- 

 uate to the apex, feebly convergent and nearly straight to the base, the basal 

 angles obtuse but distinct, the apical but slightly obtuse; apex and base sub- 

 equal; disk very obsoletely reticulate, polished, minutely and remotely punc- 

 tate, coarsely reto-rugose near the sides. Elytra fully three-fifths longer than 

 wide, but very slightly wider near apical third than at base and about one- 

 half wider than the prothorax; sides feebly arcuate posteriorly, the apex 

 broadly parabolic, finely but distantly serrulate, the sutural angles not dis- 

 tinctly rounded; disk rather coarsely; subrugosely and sparsely punctate, the 

 interspaces polished. Under surface very sparsely pubesjent. Length '2. 5 mm. ; 

 width 1.0 mm. 



