538 Coleopterological Notices, VII. 



straight thence to base and to the apex, which is narrowly subtruncate ; 

 humeri not evident, the tumid mes-episternum visible in the reentrant angle, 

 as is frequently the case throughout the family ; disk even, the base fitted 

 closely against the arcuate base of the prothorax, with a small erosion at the 

 middle of the basal margin of each. Pygidium small, feebly convex, equilatero- 

 triangular with rounded apex, finely punctulate and rugulose, somewhat 

 oblique, not vertical, and visible from above to some extent. Legs moderate 

 in length and rather slender, the femora quite feebly and gradually clavate ; 

 hind tarsi very much shorter than the tibiae, with the first joint only moder- 

 ately elongate but equal to the next two. Length 1.0-1.2 mm.; width 0.4- 

 0.48 mm. 



Pennsylvania (Westmoreland Co.). Mr. Schmitt. 



The male described above has the anterior tarsi distinctly di- 

 lated toward base and papillose beneath, and the sixth ventral 

 segment large, longer than the four preceding, with the apex 

 rather strongly rounded. The female is somewhat smaller than 

 the male, with shorter and more slender antennae, and relatively 

 shorter and still more obviously rhomboidal elytra which conceal 

 the pygidium, the latter more vertical ; the sixth ventral is very 

 much shorter than in the male, and the anterior tarsi are slender 

 and completely undilated. The species appears to occur in con- 

 siderable abundance. 



CERAMPHIS n. gen. 



The single species representing this genus is one of the most 

 remarliable types of the family, and differs to an extraordinary 

 degree from Eumicrus and Acholerops, the raetasternum extend- 

 ing in one large unbroken expanse from side to side, without 

 trace of the met-episternal suture which is so marked and strongly 

 developed a feature in those genera ; this is all the more remark- 

 able when we consider the extremely short and inflated hind body. 

 It also diflers profoundly from all other types of the Eumicrini 

 in having the prothorax geometrically conical, with a much larger 

 extent of prosternum before the coxae, and in the abruptly in- 

 flated hind body alluded to, but in the elongated posterior 

 trochanters, short abdomen with arcuate segments, large, vertical 

 and convex pygidium and structure of the front and palpi, it is 

 similar, and therefore cannot be separated tribally; in this connec- 

 tion, it should be stated that in the absence of a met-episternal 

 suture the genus is quite homologous with the European Gho- 

 lerus rufus, although having no special resemblance otherwise 

 with that aberrant ally of Eumicrus and Acholerops. 



