BY EDWARD NEWMAN. 



495 



Genus. — Rhinotragus, Germar. 



Rhin. puniceus. Caput, antennce, pedes et abdomen nigra ; 

 prothorax puniceus macidis 2 nigris ; elytra punicea apice 

 nigra. (Corp. long. '45 unc. ; lat. "1 unc.) 



Head, antennae, legs, and abdomen black : prothorax scarlet, with 

 two small round black spots, which in some specimens are so ex- 

 tremely small as readily to escape observation : scutellum black ; 

 elytra scarlet, with black tips. 



Inhabits Brazil. Presented by Mr. Walker. 



Rhin. anceps. Niger ; protlioracis latera margoque anterior 

 testaceis ; elytra alhida plagd mediana communi apicibusque 

 nigris. (Corp. long. 'B5 unc; lat. '125 unc.) 



Head, antennae, legs, and abdomen black, the latter with a silvery 

 fringe at the margins of the segments : the prothorax is black, 

 with the lateral and anterior margins pale testaceous : the elytra 

 are of a dirty white colour, with an elongate central black mark, 

 common to both ; their apex is also black. 



Inhabits Brazil. Presented by Mr. Walker. 



Genus. — Pempsamacra, Newman. 



Caput pronum prothorace paull^ angustius : antennae 1 2-articulatae, 

 versus apicem pedetentim incrassatae ; articulus 1"'. magnus ; 2"'. 

 brevis minutus; 3"^ 4"^que lon- 

 giores, graciliores ; 5"^ 4°. paullo 

 longior; 6"'. ad lO""". subaequales, 

 caeteri breviores : labrum trans- 

 versum baud emarginatum, sub 

 clypeo fere latet : mandibultB 

 subincurvse, apice acutae, nullo 

 modo dentatae : maxillarum lacinia 

 brevis acuta, galea lanugine tecta; 

 maxipalpi 4-articulati, articuli l"^ 

 ad 3"™. breves, obconici, subaequales; 4"'. elongatus, apice acu- 

 tus: labium transversum baud emarginatum, ligula in 2 lobos, 

 magnos, rotundatos, divisa : labipalpi 3-articulati ; articuli l"^ 

 2"^que breves ; 3"^ duplo longior : prothorax fere cylindricus, 

 latitudine manifeste longior, pone medium utrinque tuberculatus : 

 elytra linearia, prothorace vix latiora, apice vix acuta: pedes 

 mediocres, femora extus crassiores. 



