cerambyciDjE. 209 



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



L. nigerrima, thorace curtulo, subrotundato, lateribus distinete 

 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. aterrirna ; but 

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

 sides distinctly angled, the posterior angle sharp and protuberant : 

 antennae (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 pubesceDce, 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 carbonaria. 



L. aterrirna; 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 sequaliter bispinosis. 



Listroptera thoracica, Chevr. Rev. et Mag. de Zool. 1855, p. 17-9. 

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



9. Listroptera collaris. B.M. 



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

 lineaque nigris. 



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

 Hab. Brazil (Para). 



