224 cerambycidjE. 



11. Ibidion striatocolle, n.s. B.M. 



I. nigrum ; thorace supra antice la>vi 3 postice subelevato et 

 transversim striato, lateribus et margine postica, sericatis ; 

 elytris singulis maculis duabus flavis, macula posteriori trans- 

 versa suturam attingente ; lineis 5 longitudinalibus punctorum 

 setigerorum; apice bispinosis, spma externa majore ; thorace 

 subtus subsericeo ; tibiis longitudinaliter sulcatis. 



Deep black ; thorax above in front smooth ; behind, the back 

 is somewhat raised and is transversely striated, the sides of 

 this portion having a greyish silky gloss ; behind there is an 

 impressed bent line, the sides of which also are glossy; the 

 scutellum is somewhat notched at the end, and it is covered 

 above with silvery-white hairs; each elytron has five longitu- 

 dinal rows of points, each bearing a bristle ; a little from the 

 base is a yellow spot placed in the middle of the elytron, behind 

 the middle and touching the suture is a transverse yellow spot 

 not reaching the lateral margin, when the elytra are closed it 

 forms a continuous narrow yellow band ; the tip of each elytron 

 is two-spined, the outer spine the larger. 



Length 5 lines. 

 Hab. Para (Coll. W. B. Bates), 



12. Ibidion signatum. B.M. 



Ibidion signatum, Serv. Ann. Soc. Ent. Fr. iii. 104, 

 Hab. Brazil. 



13. Ibidion erythrocephalum, n. s. B.M, 



I. nigro-fuscum, capite rufo, elytris albis, basi nigris, linea ob- 

 liqua nigra, maculaque communi nigra, post mediam partem, 

 postice rotundata ; abdomine subtus ferrugineo ; thorace 

 quinque-tuberculato. 



Head red, an impressed line on the crown extending from the 

 base of the antennas to behind the eyes ; antennas brown, the 

 basal joint red. Thorax brownish-black, the back with five tu- 

 bercles. Elytra white, the base with a black band, emitting at 

 the suture an oblique black line which runs on the margin about 

 the middle into a large black spot, common to both elytra, 

 rounded behind, the surface with five longitudinal lines of rather 

 distant punctures, each bearing a hair. Legs (broken in the 

 specimen). Under side of abdomen ferruginous. 



Length 5 lines. 

 Hab. Guatimala (Coll. Deby). 



