I 



Coleopterological Notices, VI. 643 



The representatives of this genus are very rare in collections, 

 and scarcelv anything can be stated in regard to their true geo- 

 graphical distribution. 



1. I>. iiiyrinecops n. sp. — Very slender and elongate, black, the sterna 

 of the hind body and elytra below the humeri paler; antennae pale flavo- 

 testaceous, the last four or five joints dark; legs pale ochreous throughout. 

 Head oblong, rounded at base, the sides parallel for a long distance behind the 

 eyes, which are small, anterior and scarcely at all prominent ; surface moder- 

 ately convex, rather coarsely, very densely punctate, the punctures confluent 

 laterally, feebly pubescent; antennae long, slender, one-half as long as the 

 body, the third joint distinctly longer than the fourth, outer joints slightly 

 thicker. Prothorax slightly narrower than the head, much longer than wide, 

 deeply biit not acutely constricted at basal third, the anterior lobe almost regu- 

 larly globular ; collar distinct, finely, deejily constricted; basal margin wide 

 but not at all tumid, defined by a fine impressed line and by its less sculp- 

 tured surface; disk extremely minutely and densely punctate, and densely 

 clothed with minute decumbent hairs. Elytra much longer than the head and 

 prothorax combined, deeply, transversely impressed near the base, slightly 

 dilated and moderately convex behind, twice as wide as the prothorax, nearly 

 twice as long as wide, densely, extremely minutely and scarcely visibly 

 punctulate, the pubescence very short and decumbent, dusky-cinereous and 

 inconspicuous except in a transverse basal band and broader fascia at basal 

 two-fifths, where it is brown, the posterior brown fascia bordered anteriorly on 

 each elytron with a narrow oblique fascia of coarser silvery-w'hite pubescence. 

 Under siu-face minutely, densely punctate and pubescent. Legs moderate 

 in length, rather thick, minutely pubescent. Length 2.8 mm.; width 0.7mm. 



Southern Illinois. 



The upper surface is beset with extremely sparse and perfectly 

 erect stitf setse, rather long on the elytra. The male has the fifth 

 ventral unmodified, the minute genital segment deeply and circu- 

 larly emarginate throughout its width at apex. 



A single specimen, kindly given me a few years since b^^ Mr. 

 F. M. Webster. 



2. D. unicus n. sp. — Slender, dull black, the tarsi and basal joints of the 

 antennae testaceous; legs, under surface of the hind body, and eleventh an- 

 tennal joint more or less pale piceous. Head convex, oblong-oval, broadly 

 rounded at base, rather coarsely and very densely punctate, feeblj' pubescent, 

 the eyes very small and anterior; antenme one-half as long as the body, slen- 

 der toward base but gradually quite thick toward apex. Prothorax much nar- 

 rower than the head and much longer than wide, the constriction near liasal 

 third deep and broadly angulate at the sides, the apical lobe subglobular and 

 rather longer than wide; collar distinct; basal margin wide, fiat, defined only 



Annals N. Y. Acad. Sci., VIII, Sept., 1895—44. 



