1898.] SBRBicoBiir coleoptbba or st. vincent. 321 



Hah. St. Vincent : leeward side. Gbenada : Balthazar, 

 Grand Etang and Mount Gay Estate {H. H. Smith). 



Head orange-yellow, with the base behind the eyes fuscous, 

 divided by a yellow but ill-defined line in the males ; antennae 

 black, as long as the body in the male, about two-thirds as long in 

 the female. Thorax transverse and rectangular, but the front 

 angles broadly rounded, and the hind angles not prominent, 

 orange-yellow, the margins reflexed. Scutellum, mesosternum, 

 coxae, and trochanters yellow, the posterior coxse a little infuscate. 

 Legs fuscous black. Elytra fuscous, not shining, the suture and 

 margins narrowly pale, as is also a raised costa as far as the 

 middle, which, however, is continued nearly to the apex ; in some 

 female examples it is almost concolorous throughout its length. 



The males have the basal joint of the antennae very large, nearly 

 as long as the three succeeding joints, and swollen, the succeeding 

 joints gradually increase in length, the apical joint is equal to 

 those preceding it and is not enlarged. The palpi and tips ot the 

 mandibles are fuscous. In the female all the joints of the antennae 

 are shorter and thinner. 



Dalman described one species of Tylocerus from Jamaica, 

 T. crassicornis ; and Lacordaire (Genera Col. iv. p. 348, note) 

 identified specimens from the Isle of Barthelemey with that species. 

 The figure in the ' General Atlas ' is wrongly referred in Gemm. and 

 Harold Cat. to this insect. It is that of T. atricornis, an Eastern 

 species. The Eastern species have often the terminal joint of the 

 antennae enormously developed, and form Hope's geAius Anisotelus. 

 Mr. C. O. WaterhoLise has proposed a genus SpJicerarthrvm for 

 Telephorus ivceustus Guer., an insect from New Guinea, which 

 appears to correspond with the New World 2\ijloceri in not having 

 the apical joint of the antennae of unusual form. 



SiLIS. 



Silis, Latreille, Eegne An. ed. 2, p. 471 ; Gorh. Biol. C.-Am., 

 Col. iii. pt. 2, p. 91. 



Ditemnus, Leconte, Class. Col. N. Am. p. 189. 



Silis tenella, sp. n. 



FLava, capitis basi, antennis {articulo hasali eoocepto), corpore 

 (abdoniine jlavo-marginato) elytrisque fuscis, his laterihus et 

 a pice Icete jlavo-marginatis. Long. 4r-b millim. c? . 

 Mas, prothoracis margine laterali plicato, pone medium inter- 

 riipto, angulis posticis acute prominulis, ante excisionem in 

 tuherculum acutum elcvato. 

 Sab. St. Vincent : windward and leeward side (H. H. Smith). 

 The mouth, front of the head, the thorax, legs, and margins of the 

 elytra are bright yellov^^ The antennae are as long or a little longer 

 than the elytra ; their basal joint is yellow, the second and third 

 are paler than the rest, as they are whitish beneath. The thorax 

 is transverse, deeply sulcate, the sulcation not reaching the front 

 Peoc. Zool. Soc— 1898, No. XXI. 21 



