ncio Ncolrojncal Miiiiintdls. 27 [ 



more, delicate skull. The other uieinbers of the genus are all 

 coii.'^iilcrably smaller. 



lihij)idomys venezuehe aimananus^ subsp. n. 



Similar to the typical form in colour and other characters 

 but rather larger and more heavily built ; the fcMit broader 

 and stouter. Cieneral colour above dull greyish fulvous, as 

 in the majority of specimens of II. v. tijpicm^ but the latter is 

 veiy variable in the exact tone of colour, some specimens 

 from Merida being quite greyish and others deep fulvous. 

 Belly of type dull whitish, the hairs white to their roots; in 

 the second specimen they are slightly grey basally. Tail 

 rather more heavily furred and pencilled than in the typical 

 form, blackish brown throughout. 



ykuU with its brain-case larger than in the typical form, 

 but its muzzle is of much the same proportions, very ditferent 

 to the long heavy muzzle of R. Couesi^ the Trinidad species. 

 Interorbital region broad and flat. 



Dimensions of the tyjic (measured in the flesh) : — 



Head and body 150 millim. ; tail 176; hind foot 29; 

 car 21. 



•Skull : basilar length 29v5 ; greatest breadth 20 ; nasals 

 12'5x-l"o; interorbital breadth 5'3 ; breadth of brain-case 15; 

 palate length 15*2; diastema 9'7 ; palatal foramina 8 x o'G ; 

 length of up[)er molar series G"0. 



llab. Cuniana. Type from Ipure, altitude 700 m. ; a 

 second example from Quebrada Secca. 



Type. Female. Original number 314. Collected 22nd 

 March, IbDII, by E. Andre. 



Ulnpidomys di-yas, sp. ii. 



Size small. Fur fairly straight and crisp, not woolly ; 

 hairs of back about 7 millim. in length. General colour 

 above bright fulvous, about as in Oryzumys Jiavicans, Thos., 

 finely lined with black. Head rather greyer. Ears of 

 medium size, thinly haired, pale brown. Cheeks, sides of 

 neckj and flanks more fawn-coloured, a distinct fulvous line 

 edging the belly-colour. Lips, whole of under surface, and 

 inner sides of limbs pure sharply defined white. Outer sides 

 of arms and legs and uj)per surface of hands and feet fulvous, 

 a faint metapodial darkening present. Fifth hind toe reaching 

 to the middle of the second phalanx of the fourth. Tail 

 rather lunger than the head and body, its basal half-inch furry 

 like the body, the remainder thinly haired, slightly pencilled, 

 uuiloimly brown throughout. 



