On some neio Species of Napeogenea. 155 



This is so evidently a local form of the Guiauan llcd-sided 

 Opossum that, much as it differs in colour, it seem? best for 

 the present to regard it merely as a subspecies of that 

 animal. 



Peramys rubidus, sp. n. 



Size, proportions, and cranial characters about as in 

 P. brevicauda(>/s, though the muzzle is slightly more slender. 

 Colour uniformly chestnut-rufous all over above and on the 

 sides, the head rather brighter rufous, and the posterior back 

 rather darker. Belly dull buflfy grey, the hairs greyisli 

 brown basally, dull buiFy terminally. Outer side of limbs 

 and upper surface of hands and feet dull rufous. Tail also 

 rufous throughout. 



Dimensions of the type (an adult male, measured in 

 skin) : — 



Head and body (evidently stretched) 160 millim. ; tail 64; 



nd foot s. u. (wet) 18 ; ear (wet) 13. 



Skull : greatest breadth 19'4 ; nasals 18 x 5*7 ; interorbital 

 breadth 6Q ; palate, length from gnathion 20, breadth 11'6 ; 

 combined length of ms.i-3 5'9. Lower jaw : back of condyle 

 to tip of first incisor 28. 



Hab. Bahia. 



Ti/pe B.M. no, 55. 11. 26. 9. 



Tins species is founded on the skin from Bahia referred to 

 P. brevicaudatus in the ' Catalogue of Marsupials,' colour- 

 characters being at that date thought of less importance than 

 they have since proved to be. 



XXII. — Descriptions of some new Species o/" Napeogenes. 

 By F. D. GODMAN, F.R.S. 



Napeogenes aster ^ sp. n. 



N. Stella', Hew., similis, scd alls auticis costa ad basin nigra, alis 

 ambabus obscurioribus et punctis submarginalibus minulioribus. 



Hab. Ecuador {0. T. Baron). 



1 have three specimens of this insect, which is very 

 closely allied to N. stella, as stated above. It diff'crs in 

 having the outer half of both wings darker, which clearly 

 distinguishes it. 



11* 



