}[ammals from Bolivia. 141 



outwards, without marked po.storbital angle, rl Iges .scarcely 

 trespassing on the parietaU ; pal ital foramina broaie-st at 

 their middle or anterior third, strongly narrowed bihinJ, with 

 well-marked iiiturned p )sterior ridges; posterior nares nar- 

 row, shar[)ly V-shaped; {pterygoid processes spatulate ; bullae 

 comparatively small. 



Dimensions of the type (measured in the fle^h) : — 



Head and body 210 millim. ; tail 180; hind foot, s. u. 44, 

 c. u. 47'5 ; ear 24. Other hind-foot measurements (s. u.) : 

 42, 43, 48, 44. 



Skull : greatest length 49 ; basilar length 37 ; zygomatic 

 breadth 2i; nasals 17x5*3; interorbital breadth 10; palate 

 length 17*6; diastema 11*2 ; palatal foramina 5"6 x 3; length 

 of bulla* 9*.5; length of upper molar series 8. 



Hab. Charuplaya, Upper Secure lliver. Alt. 14)0 m. 



Trfpe. Old female. Original number 14-59. Collected 

 16th' June, 1901. 



This Proechimi/s is, as usual, remarkably like its allies 

 externally, though it may be distinguished by its much shorter 

 foot. Its short squat skull is readily separable from the 

 larger long-muzzled one of P. boUoianus. 



27. Coendou Simonsi, sp, n. 



?. No. 1481. Charuplaya, 1400 m. 22nd June, 1901. 



Allied to C. bicolor, Tschudi, and, like it, a member of the 

 group with unintlated skulls, without longer hairs on the back, 

 and with spines on the belly. 



Size rather less than in C. bicoloi', decidedly greater than 

 in C. quichua. Back without any obvious admixture of 

 hairs, although, as usual, there are a few hidden among the 

 spines. Spines, where longest on the back, attaining a length 

 of about 85 millim. General colour above dark chocolate- 

 brown, speckled with orange on the head, shoulders, and 

 lower edges of flanks, uniform on the back, and modified on 

 the rump by the showing through of the light bases to the 

 spines. Individually the spines are all yellowish white 

 basally for about one half their length on the head and back 

 and two thirds their length on the rump ; then on the head 

 and shoulders and along a narrow line on the lower flanks 

 there is a subterminal band of brown, the tip being orange, 

 and on the rest of the upper surface the whole terminal half 

 or third of the spine is dark brown. Under surface clothed 

 with thin spines mixed with fine inconspicuous hairs, its 

 colour pale brown more or less modified by the whitish bases 

 of the spines, ^luzzle and orbital region pale brown. Ears 

 Ann. cD Mag. N. Hist. Ser. 7. Vol. ix. 11 



