ADELOCERA. 261 



punctured. Scutellum coarsely punctured, rounded behind. Elytra nearly three times as long as the 

 prothorax, broadly flattened on the disc, parallel to beyond the middle, and then arcuately narrowed 

 to the apex; the surface closely, confusedly punctured, and with very shallow longitudinal grooves, 

 the punctures much finer than on the prothorax and showing no tendency to a linear arrangement. 

 Beneath very closely and (except on the prosternum) not very coarsely punctured ; prosternal grooves 

 very deep, open behind, abbreviated, reaching about two-thirds of the distance to the coxal cavities, 

 the sutures sinuous posteriorly ; the propleurse not grooved. 

 Length 19|, breadth 6 millim. ( $ .) 



Hab. Mexico, Omilteme in Guerrero 8000 feet {Champion). 



One specimen. This very distinct species is allied to A. carbonaria, Schr., and 

 A. sparsa, Cand., but differs from both in the abbreviated and incomplete prosternal 

 grooves ; the antennae are longer and more broadly serrate, the thorax is shorter and 

 more convex, and the elytra are more elongate ; the entire surface above and beneath 

 is uniformly clothed with small bluish-green scales. 



8. Adelocera longicornis. (Tab. XI. fig. 4, s .) 



Elongate, rather narrow, moderately convex ; ferruginous or obscure ferruginous, in some specimens ( $ ) the 

 head, elytra, under surface, and a large discoidal patch on the prothorax pitchy black, and the hind angles 

 of the prothorax testaceous or rufo-testaceous ; above and beneath rather sparsely clothed with appressed 

 cinereous or fulvo-cinereous, piliform, acuminate scales, those on the prothorax sometimes ( $ )more golden 

 upon the sides and base and brown on the middle of the disc ; the legs and antennae pitchy-brown, some- 

 times partly ferruginous. Head broadly excavate in the middle in front, coarsely, closely punctate ; 

 antennas about reaching the base of the prothorax in the female, more elongate and more pubescent on 

 the inner edge in the male, the joints from the third flattened and moderately serrate, 3-10 longer and. 

 broad. Prothorax nearly as long as broad, convex, deeply canaliculate in the middle behind ; the sides 

 moderately arcuate, converging in front, and strongly sinuate behind ; the hind angles acutely produced 

 and divergent in the male, less prominent in the female ; the entire surface rather coarsely, moderately 

 closely punctate. Scutellum coarsely, closely punctate, acute behind. Elytra three times as long as the 

 prothorax, feebly convex, flattened towards the suture, subparallel to about the middle and gradually 

 narrowed thence to the apex ; the surface closely, confusedly punctured, and sometimes with very shallow 

 longitudinal grooves, the punctures finer than on the prothorax and showing no tendency to a linear 

 arrangement. Beneath closely and (except on the prosternum) not very coarsely punctured ; prosternal 

 grooves very deep, abbreviated, about reaching two-thirds of the distance to the coxal cavities ; the 

 propleuree not grooved. 



Length llf-16, breadth 3|-4| millim. ( <$ $ .) 



Hab. Guatemala, Capetillo (Champion). 



Three males and two females. In this species the prosternal grooves are formed very 

 much as in A. viridis, except that they are more abruptly limited posteriorly ; the antennas 

 are unusually elongate, especially in the male. A. longicornis has somewhat the facies 

 of a small A. mexicana, but it has very differently punctured elytra. The females I 

 refer to A. longicornis differ from the males in colour, and also in the denser clothing 

 of the thorax, but as the specimens are all from the same locality I do not hesitate to 

 put them together. 



