226 CERAMBYCID.E. 



nali ad basin ; antennis pedibusque luteolis ; corpore subtus 

 cinereo. 



Polished ; head and thorax very smooth pitchy, margined in 

 front and behind with rufous ; antennae pale yellow, with short 

 hairs on the hind margins of the joints; scutellum covered with 

 short silky hairs ; elytra pale yellow, the base and a small por- 

 tion near the suture at the base punctured, a fossula near the 

 base of each not extending to the middle ; legs pale yellow ; 

 body beneath covered with a cinereous pile. 



Length 5 lines. 

 Hab. British Guiana (Coll. Schomburgk). 



23. Ibidion subcruciatum, n. s. B.M. 



I. corpore subferrugineo ; elytris singulis apice spinosis flavo- 

 testaceis, fasciis duabus transversis fuscis, una basali, altera 

 mediana ad suturam linea fusca longitudinal! connexis. 



A large species, with the head, thorax, abdomen and legs sub- 

 ferruginous, the antennae paler ; thorax above nodulose on the 

 posterior half, with a slight pubescence ; scutellum covered with 

 a short thick silky yellowish pubescence ; elytra punctured, with 

 a few short bristles, and each with three longitudinal lines of 

 deeper impressed points, one along the suture, the second close 

 to it but not so long, the third about the middle : the elytra 

 testaceous, a rufous-brown transverse band at the base, at the 

 shoulder running a little way down the lateral margin, at the 

 suture connected by a narrow brown line with a second band 

 which extends across the middle ; the spine and the margin near 

 the tip rufous-brown. 



Length 9^ lines. 

 Hab. Brazil (M. Emile Von Bruck). 



24. Ibidion quadriguttatum, n. s. B.M. 



I. elytris ferrugineo-flavis, singulis guttis duabus marginalibus 

 nigris, obliquis, prima albo subtus latiuscule marginata, secunda 

 albo supra anguste marginata; elytris apice longe mucronatis. 



Head black ; antennae ferruginous, third joint blackish at the 

 base and the tip, fourth, fifth and sixth blackish at the tip; 

 joints grooved, behind with scattered longish ferruginous hairs. 

 Thorax black, smooth, surface somewhat waved, varied with a 

 pale greyish close pubescence. Scutellum with a short grey 

 pubescence. Elytra of a bright ferruginous-yellow colour, each 

 with two black guttae on the margin, but not reaching the su- 

 ture ; the first midway between the middle and the base ob- 

 liquely directed downwards, followed by a white elongated spot, 



