CERAMBYCID,!;. 



depressed, separated from each other by a channel which is very 

 narrow in front, gradually widened behind. Antennae scarcely 

 reaching beyond the middle of the elytra, 12-jointed, with the 

 third joint a little longer than the first and distinctly longer than 

 the fourth, slightly produced and acute at the apex on the anterior 

 side ; fourth to eleventh successively shorter, produced each 

 into an angulate process at the apex on the anterior side. Pro- 

 notum convex, somewhat transversely hexagonal in form, its 

 sides produced each into a flat angular process at the middle, 

 convergent thence towards the apex and also, but less strongly, 

 towards the base ; its front and hind angles rounded off. Elytra 

 less than twice as long as broad, oblique at the shoulders, broadly 

 rounded at the apex. Third joint of the middle and hind tarsi 

 not cleft beyond the middle, each of its lobes narrowed to the 

 apex and usually ending in a sharp spine ; the fourth joint short 

 but distinct, triangular in form, sometimes spined on each side 

 at the end. Prosternum with a strongly projecting anterior 

 process which is pointed at the end. 



$ . Head and mandibles shorter; 

 antennae much shorter and more 

 slender, with joints fifth to eleventh 

 feebly serrate at the apex. Elytra 

 widened in the middle. Anterior 

 tarsi not dilated ; first three joints 

 of all the tarsi with a spine on 

 each side at the apex. Prosternum 

 with the anterior process very 

 feebly developed. 



1. Dorysthenes rostratns, Fab. 

 (Prionus) JSnt. Syet. i, 2, p. 243 

 (1792) ; OUv. Ent. iv, no. 66, 

 p. 36, pi.' x, fig. 37 (1795) ; 

 Vigors (Dorvsthenes), ZooL 

 Journ. ii, p. 516, pi. 19, figs. 4 

 &5a (1826); Ctutetn. (Cyrto- 

 gnathus) Hist. Nat. An. Art. ii, 

 p. 389 (1840) ; Guer. Rev. ZooL 

 1840, p. 40, pi. i, fig. 6. 



<5 . Head and elytra (except in 

 slightly immature specimens) dark 

 brown ; prothorax (except at the 

 edges), antennae, legs, and under- 

 side reddish brown. Headimpunc- 

 tate and very shiny in front, 



p 



thorax of $, and side view of head the e .Y es > . 



and prothorax of cf. closely granulate at the sides. 



Scape of autenna3 barely reaching 



to the hind margin of the eye, the latter being large. Pronotum 

 very glossy, nearly as long in the middle as it is broad at the base. 



