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Show 386 MR. H. W . BATES ON N E W COLEOPTEROUS [June 18, profunde concavo, fronte carina lata obtusa antice declive et postice verticaliler truncata : thorace punctis umbilicatis annuliformibus medio distantibus, lateribus densis et subconfiuentibus, linea dorsali areaque basali impunctatis : scutello subtilissime striguloso-punctulato: elytris planatis, paullo subtilius quam thorace annulato-punctatis, lateribus post medium apiceque dense strigu-losis : pyyidium strigis concentricis densissime impressum, erecte fulvo-pilosum : corpore subtus pedibusque (lateribus densius) fulvo-pilosis. Long. 26 millim. Although the female only is in the collection and of that a single example, the differences in colour and sculpture from the same sex in P. vollenhoveni seem to indicate a distinct species and to justify its description as such. MYCTERISTES (THEODOSIA) TELIFER. Elongato-oblongus, aurescenti-viridis, elytris planatis ftavescentibus. 3 . Caput et thorax passim densissime confluent er punctulata subopaca, hoc dorso subnitenspunctulis subdiscretis; scutello et elytris, pygidio, corpore subtus et pedibus subtilissime dense punctulatis, sericeo-nitentibus: capite cornu sat brevi curvuto, apice profunde bifida parum dilatato, frontis margine supra antennarum basin ungulatim producto,- thorace dorso oblicjue valde elevato et in cornu porrectum elongatum robustum apice emarginatum (sub-bifidum) producto ; cornu dimidio apicali fronte que igneo-cupreis : pedibus anticis, prcecipue tarsis, valde elongatis, tibiis extus acute et breviter bidentatis (apicali incluso), tarsis glabris. 2 • Caput densissime ruguloso-punctatum, clypeo sparsim grosse punctato, margine ante oculum indentato deinde antice fiexuoso, clypeo angustato apice bidentato : thorace disco sparsim grosse umbilicato-punctato inter puncta subtilissime punctulato, lateribus densissime rugoso-punctato: scutello punctis nonnullis grossis: elytris punctis umbilicatis, versus basin seriatis, versus latera ct postice densius vel confusis : pygidio concentricaliter dense strigoso : tibiis anticis tridentatis. Long. 20-28 millim. According to the practice of recent systematists a new genus should be instituted for this species on account of the peculiar shape of the horns in the male ; but the abrupt modifications in these features presented in the known species allied to Mycteristes seem to show that they form specific and not generic characters, just as they do in such genera as Onthophagus, Phanceus, and Copris. Of the numerous genera proposed, the present species approaches nearest to Theodosia, Thorns. CORYPHOCERA BORNEENSIS, Wall. Tr. Ent. Soc (3) iv n <-*.98 t. xi. f. 2 ( $ ) . W P' Z0> One (male) example, which I refer to this species on account of its perfect agreement, in form and colour, with Wallace's description and figure. From the armature of the head of the male the species belongs undoubtedly to the genus Coryphocera and not to Diceros, as Mohnike supposed would be found to be the case when the male was known |