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Show 520 MR. F. P. PASCOE O N THE COLEOPTERA OF PENANG. [Nov. 22, confertim punctato et utrinque fortiter spinoso ; scutello nigro; corpore infra toto violaceo. Covered with minute erect stiffish hairs, dark but very clear luteous, approaching to chestnut-red on the elytra; head and prothorax dark brassy brown, with numerous small crowded punctures, the latter with a very strong angular spine on each side; scutellum narrowly triangular, black ; elytra covered with minute crowded punctures, each with three slightly raised longitudinal lines, the apices broadly truncate ; body beneath and anterior and intermediate coxae dark glossy violet; antennae and legs uniformly brownish luteous, the posterior coxae black. Length 18 lines. PACHYTERIA INSIGNITA. P. hirsuta, brunneo-lutea ; capite prothoraceque arneo-fuscis, hoc rugoso-punctato et utrinque angulato; elytris apicem versus nigricantibus; medi-pectore et abdomine violaceis. Resembles the last, but the prothorax with the punctures more or less confluent, giving it a rugose surface, and its sides rounded anteriorly and produced into a broad angular process, terminating in a blunt tooth or tubercle, the posterior third of the elytra bluish black, their apices narrowly emarginate, the middle of the posterior thighs and three terminal joints of the antennae black, the ante- and medi-pectus of the same brassy colour as the prothorax, and the coxae more or less luteous. Length 18 lines. PACHYTERIA STRUMOSA. (PL XLIII. fig. 3.) P. hirsuta, brunneo-lutea ; capite arneo-fusco, prothorace rugoso-punctato, utrinque valde rotundato, mutico, in medio arneo-fusco; elytris apicem versus nigrescentibus. In many respects similar to the two preceding, but the prothorax strongly rounded at the sides, without any spine or tooth, luteous chestnut, with the greater part of the disk dark brassy brown, the same colour as the head, and this portion as distinctly defined as if it had been a piece let in ; posterior third of the elytra or thereabouts black, tinged with purple, their apices narrowly emarginate; intermediate femora and posterior legs, except their tarsi, blackish; abdomen and postpectus glossy violet; medipectus and prosternum ^dark brassy brown ; antennae luteous, with the last three and part of the eighth joints black. Length 15 lines. I am unable to separate in any way Mr. Newman's genus Nirarus, founded on a species from the Tenasserim coast, from Pachyteria, which was at that time probably unknown to him. The genus is one of the handsomest among the Coleoptera, and hitherto has been limited, excluding the Nirari, to P.fasciata, Fab., and P. bicolor, Parry*. The latter, from Java, is allied to P. insignita. All the species here mentioned discharged a yellowish acrid fluid when handled-Mr. Lamb believes, from the abdomen. The genus is cha- * Trans. Ent. Soc. v. p. 182, pi. 18. f. 5. |