the Coleopterous Family Cerambycidae. 315 



closely punctured, facial grooves as in the last; prothorax 

 transversely corrugated ; elytra finely punctured, the punctures 

 everywhere coalescing and giving the surface a shagreened ap- 

 pearance ; body beneath glossy blue, the posterior part of the 

 prothorax, meso- and metathorax, and first abdominal segment 

 covered with a silvery pubescence ; legs entirely bright luteous ; 

 scape and second joint of the antennae purplish-blue, the five 

 following joints luteous, the five remaining dark brown, opake. 

 Length 7 lines. 



BlXORESTES. 



Antenna subincrassatae, lineares, art. muticis. 

 Prothorax depressus, lateraliter angulatus. 



Head somewhat squarish in front, the muzzle broad and 

 slightly produced. Eyes narrowly emarginate. Antennae short, 

 thickish, linear; the third joint longest, the fourth to the seventh 

 shorter and nearly equal, the eighth, ninth, and tenth gradually 

 shorter, the last ovate and a little longer than the preceding 

 joint. Prothorax depressed, with a strong angle in the middle 

 on each side. Elytra rather broad, flattish above, closely em- 

 bracing the abdomen. Femora fusiform ; posterior tibiae and 

 tarsi elongate. 



The type of this genus is Clytus doctus, White (Cat. Long. 

 Brit. Mus. p. 267) ; but it dificrs essentially from all true Clijti 

 in the form of the prothorax. Mr. White says that it is allied 

 to Clytus Hardwickii, from which nevertheless he separates it by 

 ninety species. To me it is thoroughly distinct from anything 

 I know. Bixorestes doctus is a reddish-ferruginous species, 

 roughly punctured above, with six very bright yellow spots on 

 the elytra, besides two less highly coloured spots at the base. 

 It is probably from the Cape, as a nearly allied species in M. 

 Chevrolat^s collection in the British Museum is so labelled. My 

 specimen was obtained from a Paris dealer, who was ignorant of 

 its habitat ; nor was Mr. White acquainted with the locality of his 

 type. Ceramhyx interruptus, Olivier (Coleopt. iv. no. 67. p. 35, 

 pi. 17. fig. 133) appears to belong to this genus. Its locality is 

 also unknown. 



Thranodes. 

 Caput antice tricarinatum. 

 Antennce breves, claviformes. 

 Prothorax globosus. 

 Elytra plaiiata, abdomen baud tegentia- 



Head rounded in front, three vertical carinae between the eyes, 

 the latter prominent, slightly emarginate. Antennae not half so 

 long as the body, claviform ; the scape short, not so thick as the 



