204 MURID.¥,—DIPUs. 
Sacral vertebre .............. 3 
Caudal, 0. esesaseeelaesenees 26 
a, Skull. Peru. Presented by W. Watson, Esq. 
bo, Skull. Peru. 
ce. Skeleton. Chili. From Mr. Bridges’ Collection. 
d,e. Skeletons. Chili. Presented hy H. Cuming, Esq. 
Fg, h. Skeletons. From the Zoological Society’s Collection. 
LAGOSTOMUS. 
Teeth :—Incisors < 3 Molars + = = 5=20. 
The Viscacna. Lagostomus trichodactylus. 
Waterhouse, Nat. Hist. Mamm. ii. p. 212. pl. 10*. fig. 3 (skull).— 
Brooks, Viinn. Trans. xvi. p. 95, tab. 9, cop. —Isis, 1880, p. 906, 
taf. 9. fig. 6 (skeleton), figs. ¢, d (skull and lower jaw). 
*q, Skull. Chili. From Mr. Bridges’ Collection. 
HELAMYS. 
Teeth :—Incisors Molars = 73=20. 
1- ; 3 
The Sprine Haas. Helamys capensis. 
Cuv., Oss, Foss. v. pl. 1. tig. 21 (teeth). Cuv., Dents des Mamm. 
p- "152. no. 49 (teeth). 
Pedetes caffer, Brandt, Mém. Acad. St. Pétersb. vii. pl. 6. figs. 1, 8 
(skull). 
Cervical vertebre.............. 7 
DOUSAL cpsituetoun 4a) aaa dies se-dwrenn wee ee 12 
PamMbar: chaos ahewe seas 7 
ACTAl. yc auely wang paar Quack aoe 3 
Catal r0 tele bale a4 Rk Renee 29 
a. Teeth. Cape of Good Hope. 
b. Skull: young. Cape of Good Hope. From the Zoological Society’s 
Collection. 
c. Skeleton. Cape of Good Hope. Presented by Sir A.Smith. 
DIPUS. 
Teeth :—Incisors + —; Molars s=; =16. 
a2 
The Roveu-roorep Grrbos. Dipus hirtipes. 
Waterhouse, Charlesw. Mag. Nat. Hist. 1839, p. 9. figs. a, b (skull), 
p- 186. figs. a, 6 (skull).—Schreb., Siiugth. iv. pl. 239%. fig. (dentition), 
a, Skull, Sennaar. From the Stockholm Collection. 
