MURinE. NEOTOMA. 175 



DIPODOMYS. 



Teeth :— Incisors |4 i Molars £■ ; = 20. 



1-1 4-4 



The Pouched Jerboa Mouse. Dipodomys phillipsii. 



Macrocolus altaicus, Wagner, Phya. Abhandl. der K. B. Akad. zu 

 Miinchen, v. pi. 7 (skeleton and skull), 1848. 



Cervical vertebra 7 



Dorsal 12 



Lumbar 7 



Sacral 4 



Caudal 18 



«. Skeleton. California. Presented by J. H. Gurney, Esq., M.P. 



The Kangaroo Rat. Dipodomys ordii. 



Baird, Mamm. N. America, p. 410. pi. 51. fig-. 1, pi. 83. figs. 3, 4 

 (skull;, 1859. 



MERIONES. 

 Teeth :— Incisors ^ ; Molars |=| ; =18. 



The Katse. Meriones labradorius. 



F. Cuv., Dents des Mamni. p. 187. no. 75 (dentition), 1825. 



a. Skull. North America. 



b, c. Skulls. Albany. Presented by G. Barnston, Esq. 



Meriones rufirostris. 



*a. Skull. Kordofan. 



Meriones limbatus. 



*a, *b. Skulls. Kordofan. 



Meriones leucogaster. 



Peters, Naturw. Reise nach Mossanibique, Saugth. p. 145. taf. 33. 

 fig-. 1, taf. 35. fig. 4. 



Gerbillus brevicaudatus, Waterhome, Mag. Nat. Hist. 1839, p. 13. 

 fig. c (skull). 



Meriones caft'er, Licht. in Schreb., Saugth. iv. pi. 239 D. fig. 13 (den- 

 tition). 



NEOTOMA. 

 Teeth : — Incisors Jfj ; Molars |^| : = 16. 



