518 MR. A. G. BUTLER ON THE GENUS ELYMNIAS. [June 6, 



This animal has been curiously confounded with Geoemyda spi- 

 nosa. Dr. Cantor, who first had it in a perfect state, in his list of 

 Malay Reptiles considers it the adult of that species. Being de- 

 sirous of obtaining the types of the species described by Solomon 

 Miiller, we purchased from Mr. Franks a series of specimens ob- 

 tained from the Leyden Museum, with the labels of that institution 

 attached to them. Having received in this series a young specimen 

 of Geoemyda spinosa labelled Testudo emys, in the ' Catalogue of 

 Shield Reptiles' I placed that species as a synonym of Geoemyda 

 spinosa, not considering it necessary to consult the figure in Midler's 

 book, or I should have discovered the mistake. Dr. Giinther cor- 

 rected this in his ' Reptiles of British India,' and properly changed 

 the name from Manouria fusca into Manouria emys. 



Mr. Theobald names this species "Manouria emys, Gray," instead 

 of Schlegel or Giinther ; but there are many instances of want of 

 accuracy of this kind, to which his note to T. elongata would be as 

 applicable as to the oversight for which he quotes it. 



M. A. Dumeril, in his • Catalogue of Reptiles,' p. 4. no. 7*, and 

 in the * Archives du Museum,' described, under the name of Testudo 

 emydoides, a specimen which he received from Leyden as Testudo 

 emys of Miiller ; and his name is evidently a translation of the 

 French name given to that species ; but he does not mention the 

 peculiar form of the pectoral plates, and it is very probable that he 

 received, as the British Museum did, a young specimen of Geoemyda 

 spinosa under a wrong name ; and then his name and description 

 will belong to the latter species and not to Manouria. They are very 

 much alike, although belonging to different families. 



4. A Monograph of the Lepidoptera hitherto included in the 

 Genus Elymnias. By A. G. Butler, F.L.S., F.Z.S., &c. 



[Received May 19, 1871.] 

 (Plate XLII.) 



The present group of Butterflies is one of the most interesting of 

 all the Rhopalocerous genera, not only because it exhibits a transi- 

 tion from the Satyrince to the Brassolince (see Cat. Fabr. Diurn. 

 Lepid. p. 39), but because the species composing it are, almost with- 

 out exception, of a mimetic character. 



In the ' Genera of Diurnal Lepidoptera,' pp. 404, 405, only twelve 

 species are enumerated ; this number has since been more than 

 doubled by the labours of Messrs. Hfwitson, AVallace, Felder, and 

 others, so that the genus is now beginning to assume a somewhat 

 important aspect. I find, however, after a careful examination of 

 the structural characters, that some of the species differ so consider- 

 ably from the type form in the neuration of the hind wings that it 

 will be advisable to separate them as a distinct genus ; whilst others 



