Horn.] 600 [June 20, 



among our Histeridse, and will serve to make it known should the unique 

 specimen before me be duplicated. 



The affinities of this insect may be summed up as a Phelister with a 

 gradually formed antennal club, the latter solid, oval, not glabrous, nor 

 truncate, and with the elytra! and thoracic margins continuous. 



One specimen, Maryland. 



Epierus, Er. 



Antenna? inserted under the frontal margin, cavity at the anterior por- 

 tiou of prothorax, within the angle and partly concealed beneath by tin 

 pectoral plate, open in front and laterally. 



Our species resemble each other closely, and are known by the follow- 

 ing table : 

 Elytra with all the stripe entire. 



Epipleuraa deeply bistriate regularis. 



Epipleurae unistriate. 



Pygidium finely rugulose, coarsely punctured novellus. 



Pygidium smooth, finely punctured. 



Body moderately convex ; subhumeral sinuous pulicarius. 



Body subdepressed ; subhumeral straight ellipticus. 



Elytra with the fifth dorsal and sutural abbreviated at base. 



Clypeus not tuberculate planulus. 



Clypeus with acute tubercle at middle of anterior margin... nasutus. 

 E. coproides, Mars, is omitted in the above table as it is without doubt 



South American. 



* 



E. regulai'is, Beauv. Ins., p. 180, pi. 6, b, fig. 8 ; nigrellus, Say. 

 Journ. Acad., 1825, p. 38 ; Lee. Bost. Journ. V., p. 02, pi. 4, fig. 5, Mais. 

 Mon., 1854, p. 692, pi. 10, fig. 13; var vicinus, Lee. Ann. Lye. V., p. 104; 

 Mais. 1. c, p. 093, pi. 10, fig. 14. 



Oblong oval, black, shining, legs piceous. Head shining, minutely 

 punctulate. Thorax not densely punctulate, punctures coarser and finer 

 intermixed, both grades becoming rather coarser toward the base. Each 

 elytron with six entire punctured stride, intervals sparsely and minutely 

 punctulate, subhumeral entire, rather deeply impressed, epipleural fold 

 deeply bistriate and coarsely punctured. Propygidium with moderate 

 punctures sparsely placed, pygidium minutely punctured. Length 

 .08-. 12 inch ; 2-3 mm. 



I am unable to find any differences whatever between the regularis and 

 vicinus, the characters given by Marseul, vanishing entirely even in a 

 small series. 



Occurs in Georgia, Texas, Arizona and Southeastern California, under 

 bark of trees, in the latter locality under cottonwood bark. 



E. novellus, Zimm. Trans, Am. Ent. Soc., 1869, p. 253. 

 More elongate and parallel than the preceding species. Thorax more 

 coarsely punctured. Elytral striae entire, intervals sparsely punctulate, 



