366 REVISION OF THE TKM.HKK >XII>.K <>K 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 fbliaceous and prominent in front of each eye. Eyes deeply emarginate in front 

 and behind and nearlj divided. Middle ofepistoma prominent; on each side emarginate 

 for the ramus of the mandible. Antennae gradually dilated. Anterior and middle tibiae 

 similar, not dilated. 



G cornutus, Fab., Trogosita ; Thunberg., Gnathocerus : Lucas, Cerandria . 



\- this insect has been introduced and is l>\ no means common in tins country, the 

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

 Europe. 



Length .18-.20 inch. 



The <ml\ specimen known to me was found in California, inside of an army biscuit 



ECHOCERUS, n. g. 



This generic name is suggested for Gnathocerus maxillosus, 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 foliaceous and not prominent. Antenna; more or less robust, last joint sub- 

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

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



E. maxillosus, Fab., Trogosita ; Mann., Cerandria). 



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



Length .12 inch. 



EVOPLTJS, Lee. 

 Evoplus, Lee, 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 alter the table of genera already 

 given. 



E. ferruginous, Lee, NeM Species, p. 1-'s. 



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

 between it and Gnathoct rus. 

 Length .20 inch. 

 Found heretofore only in Louisiana. 



rjLOSONIA, Casteln. 



I losonin, Casteln., Ili-t. Nat. des Coleopt. II. p. 320 



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

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

 pleurae entire. interior tibiae slender. 



