15f3 Mr. G. J. Arrow on tie 



$, capite postice minute tuberculato : prothorace convexo. antice 

 vis impresso, grosse et confluenter punctato, spatio subcirculari 

 postico iiitido, parce et minute punctato, lateribus antice valde 

 approximatis, postice fere parallolis : elytris grosse sublineare' 

 punctatis ; pygidio segmentoque ultimo ventrali dense et aequaliter 

 rugosis, breviter rufo-setosis. 

 Long. 24-32 mm. ; lat. max. 14-18 mm. 



Hub. Borneo: Sarawak; Singapore. 



This is nearly related to the Javan D, crcpsits, ¥., hut is a 

 little smaller, the cephalic horn of the male in well-developed 

 specimens is longer, more strongly curved, and bifid at the 

 end, and the median process of the thorax is narrower. In 

 a small male from Sarawak the cephalic horn is short and 

 not at all hifid and the prothorax is abruptly vertical in 

 front but not produced into a horn. The female has only a 

 small tubercle upon the head, and is shorter, broader, and 

 much more strongly punctured than the male. 



Burmeister has bestowed upon a West-African species the 

 name of PhyUognathus bacchus, but as the latter name was 

 previously used by Mulsant for a variety of the European 

 Phyllognatlius sileniis, its re-use is not admissible, and I have 

 therefore changed the name of Burmeister's insect to 

 P. burmeisteri. 



I have found by examination of the type, now in the 

 Oxford Museum, that the insect supposed by Burmeister 

 and Lacordaire to be Bothynus ascanius, Kirby, is quite a 

 different species with a very strong prothoracic tubercle and 

 large and deep excavation in the male, and distinctly striated 

 elvtra. The false Ascnuins with almost smooth elytra must 

 be called by the name given to the female, Bothynus met/on, 

 Germ. 



The genus Curynoscdis cannot, in my opinion, be retained 

 as distinct from the older Bothynus, the females being prac- 

 tically inseparable. Bothynus monstrosus, Bates, is only a 

 deformed specimen of B. shnplicitarsis, Bates; and Crato- 

 cnemus nif/er, Blanch., which Lacordaire thought possibly a 

 female specimen of Thronistes, seems to me to be more 

 probabl}' a Bothynus. 



Semunopterus Jepressus, Hope, and subiequalis, Hope, are, 

 ] believe, synonvmsof 5. {Phikurus) subcostatus, Cast., Hist. 

 jN'at. Ins. u. 18 lb, p. 11 G. 



r.vrrANA, gen. uov. 



Corpus breviter cylindricum. Caput triangularo, cornutum aut 

 tuberculatum. Clypous truncatus. Maudibidic delecta), extu 



