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Show 1 9 0 5 .] SOUTH-AFRICAN COLEOPTERA. 2 7 7 are sometimes faintly suffused, and the hind tarsi are blackish, lne body beneath is bluish. The extraordinary structure of the 111 tlie male is alone sufficient to distinguish this insect from any species described ; it resembles in colour and size an insect sent by Mr. G. A. K. Marshall from Salisbury, and which I doubtfully referred to II. variicornis Bohem., but as the latter specimen was a male I am certain that it does not belong to the species I now describe. Obs.-Boheman does not in describing II. superciliosus give the diagnosis of the male head, but I have no doubt from his remarks it is a male he describes. His express assertion, repeated, that the scute!lum is yellow precludes any of the specimens I have yet received from being referred to this species. A considerable series of this insect has been obtained by Dr. Brauns; four males and four females are before me. H e d y b iu s amcenus Gorh. Distant's Nat. in Transvaal, p. 197; Ann. & Mag. N. H . ser. 7, v. p. 80 (1900). Hab. Bothaville, Orange B. Colony (Brauns). One male and three females, in all respects agreeing with the types. They are interesting as corroborating the differences pointed out before and as being found in quite a new locality. P h il i ie d o n u s Gorham. Philiiedonus Gorham, Ann. & Mag. N. H. ser. 7, v. p. 82 (1900). P h il i ie d o n u s ser ic eu s , sp. n. Nigro-cceruleus, pube brevi sericea vestitus ; prothorace rufo, fere glabro, macula nigra in margine antico haud bene discreta ; elytris creberrime subtiliter punctatis, pube brevi pruinosis ; scutello, pedibus et corpore infra nigro-co&ruleis. Long. 5 millim. $ ? Hab. Bothaville, Orange B. Colony (Brauns). This Philiiedonus differs from the insect described by me as P. coronatus by its smaller size, by the wholly black antennae, and by the labrum not being red ; the thorax is also differently marked, the single black spot is placed upon the front margin, and is wedge-shaped, pointing backwards. The head is blue-black and shining, not punctured, very sparingly golden pubescent; antennae, mouth, and palpi black, the former short and feebly serrate. The thorax is wider than long, the sides and base finely margined, the anterior margin raised, but only very finely so. The elytra are wide, and are widest a little before the apex, deep blue with a silky and shining pubescence ; the punctuation is fine, close, and confluent. They do not cover the apex of the abdomen. The body and legs are entirely blue-black ; the vesicles, which can be protruded from the sides (and are so in the specimens sent), are blood-red. The pygidial segments beyond the elytra show a green tinge. The examples, two in number, are both, I think, females. |