cerambyciDjE. 20!* 



6. Listroptera Germari, n. s. B.M. 



L. nigerrima, thorace curtulo, subrotundato, lateribus distincte 

 angulatis, elytris depressis cinereo-tomentosis, margine, vitta- 

 que media basi latiuscula, parte cinerea fere impunctata. 



Listroptera carbonaria, Chevr. var. ? 



This species at first sight seems to resemble L. aterrima ; but 

 on closer inspection the thorax will be found to be shorter, the 

 sides distinctly angled, the posterior angle sharp and protuberant ; 

 antenna? (male) slender, much longer than the body ; the elytra 

 are more pointed at the end and less distinctly serrated ; the black 

 vitta in the middle is very wide at the base ; the portion which 

 is grey from a short cinereous pubescence, is almost without 

 punctures, while on each elytron of the other species there are 

 four parallel rows of punctures. 



Length 5 lines. 

 Hab. Venezuela (Coll. Dyson). 



7- Listroptera carboxaria. 



L. aterrima ; thorace vix longiori latitudine, lateribus quadrino- 

 dosis ; elytris latis, planis, cinereis, cum basi duabusque lineis 

 longitudinalibus atris, in margine vix serratis ; abdomine 

 cinereo. 



Listroptera carbonaria, Chevr. Rev. et Mag. de Zool. 1855, p. 1/8. 

 Hab. Venezuela (Caraccas). 



8. Listroptera thoracica. B.M. 



L. nigra, antennis brevibus articulis subtriangularibus, carinatis ; 

 thorace elongato, in lateribus anticis supra et infra rubro ; 

 elytris planis cinereis, singulis basi nigris bifariam punctato- 

 (quadri) striatis in margine et in medio nigro-lineatis, lateribus 

 unicostatis, extusque serratis ; pectore nigro, abdomine cinereo; 

 femoribus clavatis, apice aiqualiter bispinosis. 



Listroptera thoracica, Chevr. Rev. et Mag. de Zool. 1855, p. 179. 

 Hab. Venezuela (Caraccas) (Coll. Dyson). 



9. Listroptera collaris. B.M. 



L. atra, pedibus elongatis, thorace apice luteo, elytris cinereis basi 

 lineaque nigris. 



Cerambyx collaris, Klug, Nov. Act. Nat. Cur. xii. 459. t. 43. f. 8. 

 Hab. Brazil (Para). 



