356 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. VII. 



of elytra and are similar to those of discoidahs , but stouter and more 

 strongly serrate. The specimen is a male, the abdominal sexual 

 characters being identical with those given for that sex by Gorham ; 

 the ventral plates are broader than the dorsal. The rows of elytral 

 punctures are arranged in pairs, the alternate intervals being wider. 



Priocera lecontei sp. nov. (PI. V, fig. 2.) 



Closely resembles castanea Newman, from which it differs in 

 the following characters: Size larger and form much more robust; 

 head feebly, sparsely and finely punctate; thorax not conspicuously 

 punctate (nearly impunctate) ; the elytra have the humeri more 

 prominent; the femora are more strongly clavate, and the head, 

 flanks of prothorax, and legs are clothed with a long, dense, yellowish 

 pilosity. The coloration in general is the same, excepting that the 

 reddish-brown portions of the dorsal surface in castanea are here 

 replaced with pitchy black, the extreme elytral apices being dull 

 orange. The arrangement of the yellow maculations is precisely as 

 in castanea, but the ante-median and post-median pairs are much 

 larger and very irregular in form. Length 10 millim. 



The specimen before the author was determined many years ago 

 as "Priocera near castanea, n. sp. " by Dr. LeConte, to whose memory 

 this fine species is dedicated. 



Lecontei cannot well be confused with Newman's species, the form 

 being very broad, and the width of the elytra at base equal to one- 

 third the total length, while in castanea the width of the elytra at 

 base is equal to but one-fourth of the total length. 



California, without definite locality. Type in Bolter Colin., 

 Illinois State Laboratory of Natural History. 



Adelphoclerus 1 gen. nov. 



Head declivious, not wider than prothorax; eyes finely granulate, 

 moderately deeply but narrowly emarginate ; mandibles very promi- 

 nent, nearly as long as the head, stout, a strong tooth on inner margin 

 one-third from apex ; palpi as in Clerus; antenna? slender, hairy ; club 

 compact, three- jointed, abruptly formed, much larger than preceding 

 joints; form very strongly convex; tarsi moderately long and dilated, 

 claws broadly dilated at base. Type of the genus is the following 

 new species: 



1 <z<r/c' r "c. frater; Clerus. 



