158 



Mr. O. Thomas on 



greyer and more or less intermediate between this subspecies 

 and the next ; they are, however, all inmiature. 



Cuvia tschudi I pallid lor, siibsp. n. 



Similar in general characters to ttchudii, but colour much 

 lighter, the pale rings on the hairs a paler buffy, and the 

 under surface a pale creamy buff approaching whitish. 

 Collar a paler grey. Hands and feet buffy whitish, a little 

 browner proximally. 



Skull as in tschudi i. 



Dimensions of the type (measured in flesh) : — 



Head and body 2'^2 mm. ; hind foot 24; ear 29. 



Skull : greatest length 59*5 ; condylo-incisive length 54 ; 

 zygomatic breadth 33'5 ; nasals 20"3x8"7 ; diastema 16"6 ; 

 bulla 10'2 x8 ; nppcr tooth-row 14. 



Hah. Areqiiipa. Type from 2500 in. 



'Type. Adult male. B.M. no. 0. 10. 1. 85. Original num- 

 ber 1023. Collected 31st May, 1900, by P. O. Simons. 

 Presented by Oldfield Thomas. Six specimens. 



Distinguished from tschiidii by its lighter coloration 

 throuirhout. 



oilier 



Cavia nana, sp. n. 



A pigmy cuvy, conspicuously smaller than any 

 species of the group. 



Size very small, skull-length onl}' about 52 mm. Colour 

 about as in G. tschudii palUdior, the light rings on the hairs 

 bufiEy or pale cinnamon ; no darkening along the median 

 area of the back. Under surface creamy whitish, the grey 

 collar well marked. Hands and feet pale brown. 



Skull about as in C. tschudii, but cons])icuously smaller. 

 Bullpe especially small. 



Dimensions of the type (measured in flesh) : — 



Head and body 215 mm.; hind foot 38 ; ear 23. 



Skull : greatest upper length 52 ; condylo-incisive length 

 47 ; great(^st breadth 29*5 ; nasals 17'5 x 7'5 ; interorbital 

 breadth 10"5 ; breadth of brain-case 22 ; diastema lo*? ; 

 bulla 9*5 X 7'5 ; upper molar series, crowns 11*8, alveoli 12"5. 



H'ib. Hisjhlands of Bolivia. Type from Chuluniani, 

 Yungas, 2000 m. Another specimen from the Desaguadero 

 Eiver {J. B. Pentland). 



7^//)^. Adult female. B.IM. no. 1. 6. 7. 59. Original num- 

 ber 1363. Collected 16th February, 190l, by Perry O. 

 Simons. Presented by Oldfield Thomas. Four specimens 

 in all. • 



