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Show 1866.] MR. H. W. BATES ON FORMOSAN COLEOPTERA, 351 paulo convexo, punctato, cinereo, lateribus late fuscis; elytris subtrigonis, convexis, apice truncatis, supra lineatim grosse punctatis, bicostatis, prope basin tuberculo magno compresso apice cristato, fusco et cinereo variis, prope apicem macula magna communi cinereo; corpore subtus pedibusque fusco et cinereo variegatis. Long. 4\ lin. The species which the present one most resembles in this extensive genus is P. bigibbera (Newman) of the Philippine Islands. PRAONETHA KALEEA. Elongato-elliptica, modice convexa, fusca, elytris lateribus plaga magna et disco pone medium macula transversa cinereo-albis ; capite tomento fulvo vestito, vertice late depresso; antennis corpore multo brevioribus, cinereo et fusco maculatis, articulo basali infra valde planato, tertio et quarto rectis; thorace parvo, quadrato, fusco-cinereo nebuloso ; elytris oblongis, prope apicem angustatis, apice ad suturam breviter oblique truncatis, supra grosse et crebre sublineatim punctatis, bicostatis, tuberculo basali paulo elevato nigro; corpore subtus pedibusque fuscis, cinereo variegatis. Long. 3 lin. ROPICA FORMOSANA. Elongato-elliptica, capite et thorace elytris angustioribus, cinereo-fulva, passim punctata; thorace lateribus paulo rotundato, fulvo bivittato ; elytris oblique breviter truncatis, pone medium utrinque macula discoidali pallide cinerea. Long. 4 lin. More elongate than the typical species, but of the same elliptical *% general outline ; head and thorax of equal breadth and narrower than the elytra. Closely punctured ; elytra more coarsely so, and clothed with dingy ashy-fulvous tomentum, with two clearer tawny stripes along the dorsal surface of the thorax, and a rounded discoidal ashy spot on each elytron, a little after the middle. The elytra are elongate- elliptical, and have the apical margins abruptly flattened out, with the apex obliquely truncated. Antennae a little longer than the body ; joints gradually diminishing in length from the fourth, and of a uniform ashy brown. Body beneath and legs dingy ashy. Claw-joint of the tarsi long and strong, with claws semidivergent. SYBRA PUNCTATOSTRIATA. Elongata, sublinearis, depressa, capite thoraceque grossissime sub-dense punctatis, elytris punctato-striatis, stria suturali valde im-pressa; sordide cinereo-fusca, thorace fulvo indistincte quadri-vittato ; elytris lateribus fulvo strigatis, apice valde oblique sub-sinuato- truncatis. Long. 4§ lin. Belongs to the second section of the genus, as divided by M r. Pascoe, in which the elytra have the apex " wedge-shaped, with the |