366 



REVISION" OF THE TENETSRIONirVE OF AMERICA, 



two short horns between the eyes. Mandibles (%) with a broad ramus ascending above 

 the head, the inner being simple and the apex curved backward. Side margin of head (%) 

 broadly foliaceous and prominent in front of each eye. Eyes deeply emarginate in front 

 and behind and nearly divided. Middle of epistoma prominent; on each side emarginate 

 for the ramus of the mandible. Antenna? gradually dilated. Anterior and middle tibia' 

 similar, not dilated. 



G. cornutus, Fab., (Trogosita); Thunberg., (Gnathoceras); Lucas, (Cerandria). 



As this insect has been introduced and is by no means common in this country, the 

 student is referred for a fuller description and an excellent figure to Duval, Gen. Col. 

 Europe. 



Length .18-. 20 inch. 



The only speeimcn known to me was found in California, inside of an army biscuit. 



ECHOCERTJS, n. g. 



This generic name is suggested for Gnathocerua rnaxilloaua, which differs from the 

 type of the genus in which has been placed, in the following particulars: 



Eyes rounded, prominent, feebly emarginate in front and not all behind. Sides of 

 front less foliaeeous and not prominent. Antenna' more or less robust, last joint sub- 

 quadrate. Superior ramus of mandibles more slender, toothed and incurved, first 

 joint of hind tarsi not longer than the second and third. 



E. maxillosus, Fab., (TrogoKita); Mann., (Cerandria). 



This is also an introduced insect, found principally in the Southern States. 



Length .12 inch. 



EVOPtjTJS, U 



Kvoplus, Leo., New Species, 128. 



The description of Dr. Leconte (loc. cit.) leaves nothing to be desired, and is so recent 

 as to render it unnecessary to repeat any portion of it after the table of genera already 

 given. 



E. ferruginous, Loc, New Species, p. 12S. 



This genus is undoubtedly near that described as Peneta, and probably forms a link 

 between it and Gnaihocervs. 

 Length .20 inch. 

 Found heretofore only in Louisiana. 



ULOSONIA, Casteln. 



Ulosonia, CaetelH., Ki»t. Nat des Coleopt tl, p. 320. 



Although the head of the male is here (in our species) tubcrculate, or in some species 

 horned, the maxillary palpi have the last joint broadly triangular or securiform. Epi- 

 ploune entire. Anterior tibiae slender. 



