Mr. W. L. Distant on Malayan Entomology. 251 



ears, and of whose more important characters Mr. Tomes has 

 given an excellent description. The two species together 

 seem to belong to rather a synthetic type, combining the ex- 

 ternal characters of Oryzomys with the cranial ones of Rhipi- 

 domys^ to which latter, under the name of Myoxomys^ Mr. 

 Tomes referred his species *, calling it, however, the " least 

 typical species " of that group. 



I have not, unfortunately, been yet able to examine a spirit- 

 specimen of either //. hicolor or H. rufescens, so that I cannot 

 describe the characters of the foot-pads, palate-ridges, or 

 mammie ; and I will therefore follow Mr. Tomes's example 

 and leave the two species in Bhtjn'domys, of which, as that 

 gentleman said, they certainly form the least typical part. 



XXV. — Contributions to a Knowledge of Malayan Ento- 

 mology. Part IV. By W. L. Distant. 



The following undescribed butterflies have been recently 

 received from several valued correspondents, and will be all 

 figured in the Appendix to the writer's ' Rhopalocera 

 Malayana.' 



Rhopalocera. 



Fam. PapilionidsB. 



Subfam. Papilioxin^. 



Papilio Egertonij n. sp. 



Female. Anterior wings above blackish, the nervures and 

 nervules margined with dull obscure greyish : posterior 

 wings above bluish grey, the cell and the area from costal 

 margin to lower subcostal nervule almost totally dark bluish 

 black and with a double series of spots of the same colour 

 placed between the nervules, the uppermost and discal 

 series smallest, consisting of four spots, of which the largest 

 is subquadrate and placed between the lower subcostal and 

 the discoidal nervules ; the outer series marginal and larger 

 than the discal spots ; abdominal area dark bluish grey and 

 with two small spots of the same colour placed beneath cell 

 and divided by the second median nervule ; fringe very 

 narrowly ochraceous. Anterior wings beneath as above, but 

 with the greyish markings paler and brighter and with oblique 



* P. Z. S. 1861, p. 284. 



