OCR Text |
Show 1866.] MR. F. P. PASCOE O N THE COLEOPTERA OF PENANG. 527 NEOCERAMBYX. Neocerambyx, J. Thomson, Essai, &c. p. 194. NEOCERAMBYX LAMBII. N. fuscus; prothorace in medio longitudinalter bisulcato, transverse profunde striato, striis subcurvatis, regularibus ; elytris velutinis, griseo-argenteis, apicibus fortiter bispinosis. Dark brown; head broadly grooved between the eyes, with a strongly marked longitudinal crest dividing it, under each antennary tuber a deep fovea; prothorax with two longitudinal grooves meeting anteriorly, space between them and the sides regularly and deeply striated transversely, the striae slightly curved, these and the impressions on the head clothed more or less with glossy yellowish hairs; scutellum triangular; elytra closely covered with a velvety greyish-silvery pubescence, varying in large dark and silvery patches according, to the light, apices strongly bispinose; body beneath and legs dark brown, with a greyish pile ; antennae in the male very long, the third and fourth joints nodose, the fifth and some of the following with a short spine at the apex. Length 16 lines. Nearly allied to N. aurifaber, White, but the transverse striae on the prothorax fewer, larger, and not at all twisted or intermixed as in that species. NEOCERAMBYX? INTRICATUS. N. fuscus; prothorace profunde foveato-impresso, interstitiis in-tricato- reticulatis ; elytris subtiliter griseo pubescentibus, se-ricatis, apicibus oblique truncatis, ad suturam mucronatis. Dark brown, mostly covered with a delicate greyish pubescence having a silky texture, particularly on the elytra; head finely grooved between the eyes, a transverse ring-like impression in front; prothorax covered with deep slightly oblique foveae, the intervals forming a twisted net-like series of lines clothed with greyish hairs; scutellum triangular; elytra somewhat silky, uniformly greyish, but varying in certain lights, the apices oblique, with the sutural angle mucronate; body beneath and legs brown, shining, with a sparse greyish pile; antennae ( d) twice as long as the body, with the third joint two or three times as long as the scape, scarcely nodose, (2) scarcely longer than the body, third joint twice as long as the scape, the fifth and following joints dilated on one side. Length 17 lines. This species can only be provisionally retained in Neocerambyx, as it forms an exception on account of the long third joint of the antennae, but the whole subfamily requires a thorough revision ; all I can see clearly is that we have either too many or too few genera. Since M . J. Thomson proposed Neocerambyx in his ' Essai,' he has separated from it Hoplocerambyx, Pachydissus, Newm., Conothorax, and Tapinolachnus, leaving the characters he would now assign to it doubtful. N. lambii, however, and several others, including the |