MURID.E. MUS. 163 



The Norway Rat. Mus decumanus. 



Cuv., Oss. Foss. v. pi. 1. fig. 3 (teeth). — Owen, Odont. pi. 105. figs. 9, 

 10 (teeth).— Blasim, Faun. Wirb. Deutschl. p. 310. fig. 171 (skull), 

 figs. 172, 173 (dentition), 1857. 



Surmulot, Buff., Hist. Nat. viii. p. 218. pi. 27 (skeleton). 



Cervical vertebrae 7 



Dorsal 13 



Lumbar 6 



Sacral 4 



Caudal 27 



a-d. Skulls. India. Presented by E. H. Hodgson, Esq. 



e. Skull. England. Presented by G. E. Gray, Esq. 



/. Skull. From Dr. Mantell's Collection. 



g. Skull. 



h. Skeleton. England. From Mr. Turner's Collection. 



i. Skeletons: tf $. England. From Mr. Daniel's Collection. 



I Rfc 11 o' r ®" Germany. From Dr. A. Giinther's Collection. 



m. Skull. From the voyage of H.M.S. Herald. 



n. Skull. W. Falkland. Presented by C. Darwin, Esq. 



o, p. Skulls. N. America. Presented by Dr. Backman. 



q. Skull : from a red variety. N. Africa. } From the Zoological So- 



r. Skull : from a white variety. J ciety's Collection. 



*s. Skull. "Mus decumanoides." India. Presented by the East 



India Company. 

 *t. Skull : young. New Zealand. Presented by Sir G. Grey. 



The Alexandrine Eat. Mus alexandrinus. 



*a. Skull. Port Natal, S. Africa. From the Stockholm Museum. 



*b. Skull. Port Natal. 



*c. Skull. Cape of Good Hope. 



*d. Skull. 



*e. Skull : young. Cape of Good Hope. 



Mus pilorides. 



Cervical vertebrae 7 



Dorsal 13 



Lumbar 6 



Sacral 4 



Caudal 32 or 33 



^Skeleton ^ LU ° ia ' } From thc Zoolo & ca[ Society's Collection. 



The White-bellied Eat. The Eoof Eat. Mus tectorum. 



Baird, Mamm. N. America, p. 441. pi. 52. fig. 6 (skull). 



m2 



