AMERICAN COLEOPTERA. 97 



the forms are taken indiscriminately tofrethcr is an additional although 

 slight evidence of their unity, and that the forms above described are 

 entirely inseparable specifically is completely demonstrable from the 

 material before me. 



Occurs from Massachusetts to Georgia and Ohio. 



OICRAIVOPSEI.APIIUS Gue'r. 



Very closely allied to Ecfopn'a, differing as follows: Tarsi slightly 

 dilated, joints 2 — 3 — 4 slightly emarginate, the fourth as long as the 

 third and slightly prolonged beneath. 



The specimens before me are all males, and I find the claws broadly 

 toothed at base and bifid at tip as in the males of Ectoprt'a. The 

 antenujB are also similarly formed, being either serrate or feebly pecti- 

 nate. The terminal joint of the maxillary palpi is bi-appendiculate at 

 tip in the Mexican species, but in our's even more slender and not 

 appendiculate. I feel entirely unwilling to separate our species on 

 this difference in the palpi, inasmuch as it agrees in every otlier re- 

 spect with Dicrunopse/aj}hus, even in general details of ornamentation 

 and sculpture. 



One species occurs in our fauna. 



D. Tariegatus n. sp. — Broadly oval, moderately convex, brownish, thorax 

 darker, elytra clouded. Head densely punctate. Antennae % serrate, joints 

 3 — 10 triangular, very little longer than wide. Thorax semicircular with an 

 apical emargination, base nearly truncate, sides regularly arcuate, disc moder- 

 ately convex, a vague depression near base each side of scutellum, surface 

 moderately densely punctate with small impunctured intervals, basal margin 

 finely crenulate. Elytra as wide at base as thorax and but little longer than 

 wide, sides feebly arcuate, apex broadly, disc moderately convex, brown with 

 paler anastomosing lines which are less punctured, intervals apparently aluta- 

 ceous but really with reticulations composed of lines of very closely placed 

 punctures, surface clothed with fine and very short sericeous pubescence. 

 Body beneath darker and a little more shining than above, very finely pubes- 

 cent. Length .12 inch; 3 mm. 



This species is smaller than D. Jiaviconu's Gner., and with differ- 

 ently formed antennae. The superficial resemblance in form, color 

 and sculpture is very great, the last joint of the palpi is slender and 

 not appendiculate. 



Two specimens, Illinois and Maryland, rare. 



ACSJEUS n. g. 



This generic name is proposed for a species which is closely allied 

 to Ectopria but diff"ers as follows : 



Prosternum narrow and slightly depressed between the coxae which 

 are therefore more prominent than it. 



TRA.NS. AMER. EST. SOC. VIII. (13) MAHCH, 1880. 



