160 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 65 



It is just posible that this may be the female of cuhensis Fisher. 

 Both of these species were collected in the same locality by Mr, Leng, 

 and they resemble each other in a number of respects, but the colora- 

 tion is entirely different. On account of these differences and with- 

 out additional notes on their habits, it seems advisable to describe 

 them as two distinct species, but should they prove to be sexes of the 

 same species, it would show an extreme case of dichromatism, which 

 would be unusual in this genus. 



Genus MIXOCHLORUS Waterhouse 



Mixochlorus Watekhouse, Trans. Ent. Soc. London, 1887, p. 177. — Kekre- 

 MANs, Wytsman's Gen. Insectorum, fasc. 12, pt. 2, 1903, pp. 60-61. 



Head feebly convex ; epistoma wide, not narrowed by the antennal 

 cavities and bisinuate in front; antennal cavities small, round, sit- 

 uated under a distinct carina at some distance from the eyes. Anten- 

 nae 11-jointed, rather short and slender; first joint elongate, cla- 

 vate and abruptly arcuate near base ; second oblong, about two-thirds 

 as long as third; third elongate, cylindrical and not quite as robust 

 as the second; the following joints graduallj^ becoming shorter toward 

 the terminal joint, triangular (except the last joint, which is trans- 

 versely oval), strongly serrate on the inner side, the serrate joints 

 having the poriferous pores in a cavity on the lower anterior margin 

 of the joints. Eyes large, broadly oval, strongly convex, and paral- 

 lel on the inner margin. Pronotum a little wider than long, wider in 

 front than behind, disk strongly convex, with three longitudinal im- 

 pressions; base truncate or feebly bisinuate. Scutellum small, and 

 touching the pronotum. Elytra elongate, truncate at base, and gi'ad- 

 ually acuminate posteriorly, punctato-striate, and longitudinally im- 

 pressed at the suture. Sternal cavity formed by the mesosternum and 

 metasternum, the lateral branches of the former elongate. Metaster- 

 num feebly emarginate in front. Prosternum truncate in front, and 

 not grooved at middle. Posterior coxae scarcely dilated internally, 

 the anterior margin sinuate and the posterior margin nearly straight. 

 Legs rather robust ; femora feebly swollen at middle ; tibiae slender, 

 and cylindrical; tarsi short, the first joint of the posterior pair about 

 as long as the following two joints united; tarsal claws angularly 

 dilated at base. Body agriliform. 



This genus was erected by Waterhouse for a new species Mixo- 

 chlorus suturalis from Honduras, and later he added lateralis from 

 Mexico.^* He states that it is clearly allied to Agaeocera and Pele- 

 copselaphus. The genus was unknown to Kerremans and in -^ he has 

 placed it in the tribe Chalcophorini. If we follow the Kerremans 



=^ Biol. Centr.-Amer. Coleopt., vol. 8, pt. 1, 1889. p. 168. 



* Wytsman's Gen. Insectorum, fasc. 12, pt. 2, 1903, pp. 60-61. 



