574 Coleopferological Notices, VI. 



middle than at l)ase, the apex very obtusely parabolic, the edge not at all 

 serrulate; disk finely, sparsely and but slightly rugosely punctate, the inter- 

 spaces smooth and polished. Under surface clothed sparsi-ly with short cine- 

 reous hairs. Length 3.0 mm. ; width 1.4 mm. 



Colorado. 



The male serving as the type has the fifth ventral short and 

 very broadl}' siiiuato-truucate, the genital segment short, flat, 

 apparently not at all canaliculate along the middle and feebly 

 sinnato-truncate at tip; the dorsal pygidium has the lower edge 

 thin and not dilated into a flat plate as in Trichochrous. The 

 lingual appendages are short and basal. 



3. D. expaiiSUfii n. sp. — Stout, subeuneiform and depressed, jwlished, 

 hlack, with a feeble coppery lustre anteriorly; legs black, the tarsi piceseent, 

 the apex of the femora and base of the tibise slightly rxifescent; antennie black 

 throughout; pubescence rather short and sparse, semi-erect, cinereous but be- 

 coming blackish behind the middle of the elytra, mingled with short erect 

 and hlackish seta; especially toward the sides of the body. Head fully three- 

 fourths as wide as the prothorax, slightly transverse, strongly and closely 

 punctate, the punctures slightly elongate, the interspaces smooth and polished; 

 front feebly and remotely biimpressed, the frontal margin broadly smooth 

 and slightly convex ; epistoma rather long, the labrum not deflexed, broadly 

 arcuato-ti'uncate at apex; eyes rather prominent; antenna? slender and filiform, 

 the penultimate joints fully as long as wide. Prothorax widest at ba,sal two- 

 tifths where the sides are broadly rounded, thence ])ecoming convergent and 

 just visibly arcuate to apex and l)ase, the former arcuato-trimcate and slightly 

 narrower than the base, which is more arcuate; basal angles obtuse but not 

 rounded and minutely prominent; apical angles obtuse and blunt; edges finely 

 subserrulate ; disk smooth and polished, strongly convex, finely but strongly 

 and rather closely punctate, strongly rugose near the sides. Elytra short, 

 scixrcely more than one-third longer than wide, at apical third much wider 

 than at base and nearly one-half wider than the prothorax; sides arcuate, the 

 apex obtuse and broadly rounded, the sutural angles rounded; disk nearly flat, 

 rather coarsely and closely punctate, the intersjiaces strongly shining. I'nder 

 surface very feebly convex and sparsely pu1)eseent. Length 2Ai mm.: width 

 1.3 mm. 



California (north of San Francisco). 



The unique tj-pe is apparantly a female, but the species may be 

 readily known by its depressed, cuneate form and by the charac- 

 teristics of vestiture detailed in the descrijjtion. It dirters from 

 breviusculuK in its dense pronotal punctures and in the coloration 

 of the antenna' and legs. 



4. n. iiitens n. sp. — Subeuneiform, strongly convex, polished, deep 

 black with a faint greenish-nietallie lustre; legs and antenna' deej) Ijlack 



