382 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 45. 



appendages piceous. Beak slightly larger than head, longer than 

 broad, slightly dilated at tip; nasal plate broadly triangular, basally 

 emarginate, rimmed. Prothorax about as long as broad, as wide as 

 elytra at their widest point, basally and apically truncate, laterally 

 strongly arcuate; ocular lobes absent, but replaced by a fringe of 

 vibrissae; disk closely and deeply punctate. Elytra not wider than 

 prothorax, about two and a half times as long as wide; striae consisting 

 of large deep punctures, as wide as intervals. The first ventral suture 

 is angulate, but the second segment is not as long as the two following 

 segments at the sides. 



Type.— Cat. No. 14634, U.S.Nat.Mus. 



Genus ANAMETIS Horn (1876). 

 Anametis Horn, Proc. Amer. Philos. Soc, vol. 15, 1876, p. 43. 

 The genus is monotypic, based upon (grisea Horn) =granulata Say. 



ANAMETIS GRANULATA Say. 



Barynotus granulatus Say. 

 Anametis grisea Horn. 

 Anametis subfuscn Fall. 



This species is at hand from Ontario, Michigan, Wisconsin, South 

 Dakota, Nebraska, Iowa, Indiana, Wyoming, Texas and New 

 Mexico. The writer can not find sufficient characters to even sepa- 

 rate the southern forms as a race. The color of the scales, length of 

 pubescence and arrangement are of no value whatever as characters. 

 The breadth of the elytra is very variable. The granulation of the 

 prothorax is variable in degree and as strong in some Canadian and 

 Iowa specimens as in the New Mexico material at hand. The nasal 

 plate is triangular, strongly rimmed, concave, glabrous, and strongly 

 emarginate at base. 



Genus MELBONUS Casey (1896). 

 Melbonus Casey, Coleop. Not., pt. VI, 1895, p. 820. 

 The monotype of the genus is scapalis Casey. 



Table of species of Melbonus. 



Ocular lobes and vibrissae lacking. 



1. Elytra three-fourths longer than wide scapalis Casey. 



2. Elytra two and one-fourth times longer than wide denticulatus Pierce. 



MELBONUS DENTICULATUS Pierce. 



The nasal plate is deeply depressed, rimmed, concave, very short 

 but broad and angulate crescentiform. 



Genus MELAMOMPHUS Horn (1876). 



Melamomphus Horn, Proc. Amer. Philos. Soc, vol. 15, 1876, p. 40. 

 Thricomigus Horn, Proc. Amer. Philos. Soc, vol. 15, 1876, p. 48. 



The type of MelamompJius is niger Horn, and of Thricomigus, luteus 

 Horn, both being monotypic. 



