Coleoptera. Vol. I. [Longicornia. Part I.]

6 CEEAMBTCID.E,depressed, separated from each other by a channel which is verynarrow in front, gradually widened behind. Antennae scarcelyreaching beyond the middle of the elytra, 12-joinled, with thethird joint a little longer than the first and distinctly longer thanthe fourth, slightly produced and acute at the apex on the anteriorside ; fourth to eleventh successively shorter, produced eachinto an angulate process at the apex on the anterior side. Pronotumconvex, somewhat transversely hexagonal in form, itssides 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. Elytraless than twice as long as broad, oblique at the shoulders, broadlyrounded at the apex. Third joint of the middle and hind tarsinot cleft beyond the middle, each of its lobes narrowed to theapex and usually ending in a sharp spine ; the fourth joint shortbut distinct, triangular in form, sometimes spined on each sideat the end. Prosternum with a strongly projecting anteriorprocess which is pointed at the end,2 • Head and mandibles shorter;antennsB much shorter and moreslender, with joints fifth to eleventhfeebly serrate at the apex. Elytrawidened in the middle. Anteriortarsi not dilated ;first three jointsof all the tarsi with a spine oneach side at the apex. Prosternumwith the anterior process veryfeebly developed.1. Dorysthenes rostratus, Fab.(riionus) Fid. Si/st. i, 2, p. 243(1792); Oliv. Ent. iv, no. 66,p. 36, pi. X, tig. 37 (1795) ;Jlyors (Dorvstbenes), Zool.Joitrn. ii, p. 516, pi. 19. figs. 4kba (1826); Cnsteln. (Cyrtoguathus)Hist. Nat. An. Art. ii,p. 389 (1840) ; Guer. Fev. Zool.1840, p. 40, pi. i, fig. 6..S Head and elytra (except inslightly immature specimens) darkbrown ;prothorax (except at theedges), antennse, legs, and undersidereddish brown. Headimpuuctateand very shiny in front,Fig.l.-i)or//,s//..«r.sro,sY7-«/w,s-Fab.,c?, sparsely punctured above betweenwith dorsal view of bead and pro- , f i i i i jthorax of $, and side view of bead t^^ eyes, more closely belnnd ;and prothorax of cj'.closely granulate at the sides.Scape of autennte barely reachingto the hind margin of the eye, the latter being large, Pronotumvery glossy, nearly as long in the middle as it is broad at the base.