Genera and Species of Coleoptera. 115 



we are reduced to Pycnomerus, Apeistus, <fec. To none of these, 

 however, is our insect closely related, the contiguity of the whole 

 base of the elytra to the prothorax completely isolating it from all 

 of them and their allies. 



Chorites aspis. (PI. VII. fig. 3.) 



C. niger, subnitidus, squainis griseis indutus ; antennis, palpis pedibusque 

 ferrugineis. 



Hub. Borneo. 



Broadly elliptical, black, rather glossy, covered with short erect pale 

 greyish scales, which are disposed in narrow rows on the elytra and 

 form a regular fringe round their margins and the sides of the protho- 

 rax ; antennae, palpi, and legs ferruginous, the tibiae with a black stripe 

 externally and edged with a row of greyish scales ; body beneath dull 

 black, thickly punctured, the throat only covered with yellow scales. 

 Length 2£ lines. 



There is a second species ? in my collection, also from Borneo ; 

 but, except in its much smaller size (about 1| line long), and a few 

 black scales being interspersed among the others, there is little to 

 distinguish it. 



Discoloma [Colydiidae]. 

 Erichson, Natur. der Ins. Deutschl. hi. p. 292. 



Discoloma Fn/i. (PI. VII. fig. 2.) 



D. piceo-ferruginea vel testacea, pubescens ; elytris parce punctatis ; an- 

 tennis, palpis pedibusque dilutioribus. 



Hub. Brazil (Bio). 



Pitchy-ferruginous, in some specimens testaceous, sparingly pubes- 

 cent ; head rather closely punctured, inserted in a deep emargination 

 of the prothorax ; prothorax very transverse, nearly twice as broad as 

 long, very finely punctured, the margins gradually but strongly dilated, 

 with its anterior angle rounded; scutellum small; elytra rather 

 broader than long, and as wide as the prothorax at the base, the disc 

 with several rather large, remote punctures, with a broad and strongly- 

 marked margin at the sides ; antennae, palpi, and legs pale ferruginous ; 

 body beneath pitchy, with a few scattered hairs. Length 1^ line. 



Although Erichson has characterized Discoloma in very few words, 

 I cannot doubt that the insect described above is correctly referred 

 to that genus, as indeed Mr. Fry had previously suggested to me ; 

 the only difficulty is, that Discoloma is said to have the basal joint 

 of its antennae simple, or not enlarged, which is not the case in 

 the present species. However, the habit of the typical form appears 

 to agree with this, and is so remarkable — resembling some of the 

 Nitidulidee (Amphotis for example) — whilst the structure so nearly 



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