NORTH OF MEXICO. 265 



the anterior angles of the thorax are less acute and prominent than in the three preceding 

 species. From canaliculatus, with the female of which it may be confounded, it may be 

 readily distinguished by its coarser and less dense punctures, by its color and by the 

 strong supra-orbital ridges with the longitudinal groove within. 



E. dentiger, dark aeneous, elongate oval convex, surface not coarsely and very sparsely punctured. Thorax 

 broader than long, narrowed in front, feebly emarginate anteriorly, sides feebly rounded from the base, angles acute, 

 base strongly sinuate. Elytra with cinereous pubescence arranged in irregular patches, apex apparently emarginate, 

 marginal line of elytra not extending to apex, but terminating in a small tooth near it. Base of elytra emarginate 

 and with a faint impression within the humeri. Beneath, finely punctured and sparsely covered with cinereous pu- 

 bescence. Length .40-.48 inch. 



Not rare at Camp Grant, Arizona, under the bark of mesquit. May readily be dis- 

 tinguished from all the species by the peculiar arrangement of the pubescence, as well as 

 by the apparent emargination of the elytra (when viewed from above) caused by the ab- 

 rupt termination of the marginal line of the elytra in a small tooth near the apex. 



E. tomeutosus, Lee., N. S. 37G, p. 109. Florida. Length .40 inch. 

 E. plumb eus, Lee, N. S., 37o, p. 109. 



These two species have the thorax much more transverse and with less evident ante- 

 rior angles, than any of the preceding species. From each other they may be readily dis- 

 tinguished by the characters in the table, as well as by those given by their author. 

 E. plumbeus has more rugose elytra than any other species. 



Length .40 inch. 



Occurs in the Trans-Mississippi region. 



The Epitragi of the whole Western Continent appear to need a thorough revision, no 

 monograph to my knowledge having ever been published. From the small amount of 

 study given to the species foreign to our fauna, the groups appear sufficiently well marked 

 and the species so abundantly distinct, that the task would prove by no means a difficult 

 one to any student with large series of specimens. 



SCHOENICUS, Lee. 



Schoenicus, Lee, New Species, p. 109. 



S. puberulus, Lee, loc. cit. p. 110. 



The description of this insect has been so recently published, that further comments 

 are unnecessary. 

 Length .34 inch. 



Found in Georgia, Florida, and New Jersey (Cab. Ent. Soc). 



AMERI. PHILOSO. SOC. — VOL. XIV 67 



