MURID.E. MYOPOTAMUS. 183 



C. Skeleton (imperfect). From the Zoological Society's Collection. 



d. Skeleton. Vancouver's Island. Presented by W. A. Mouat, Esq. 



e, g. Skulls. 

 /. Skeleton. 



h. Skull. From Mr. Stevens's sale-rooms. 

 i, j. Skeletons : male and female. 



The European Beaver. Castor fiber. 



Pander und D' Alton, Vergl. Osteol. pi. 2 (skeleton), pi. 8 q (skull). — 

 Cuv., Oss. Foss. v. p. 10. pi. 1. fig. 12 (teeth), pi. 3. figs. 3-6 (young), 



gls. 8, 9 (adult skulls). — Owen, Odout. pi. 105. tig. 5 (teeth) ; Oatal. 

 •steol. Ser. Roy. Coll. Surg. 1855. — Blasius, Faun. Wirb. Deutschl. 

 p. 404. tig. 225 (dentition). — Blai?iv.,Ost. Atl. G. Castor, pi. 1 (skele- 

 ton), male. 

 Castor gallire, F. Cuv., Dents des Manim. p. 138. no. 71. p. 162. 



no. B, D. 43 (dentition). 

 Castor europams, Brandt, Mem. Acad. St. Petersb. vii. p. 03. taf. 1. 



fig. 1, taf. 2. fig. 1, taf. 3. figs. 1, 2 (skull). 

 Castor, Buff., Hist. Nat. viii. p. 33. pi. 42 (skeleton). 



Cervical vertebrae 7 



Dorsal 14 



Lumbar 6 



Sacral 4 



Caudal 27 



*a. Skull : young. Hungary. Purchased of Mr. L. Parreyss. 



b. Skeleton. River Donau. Purchased of Mr. Brandt. 



c. Skull (lower jaw wanting). 



MYOPOTAMUS. 



Teeth :— Incisors £ ; Molars ti ; = 20. 



The Coypu. Myopotamus coypus. 



Waterhousc, Nat. Hist. Mamm. ii. p. 297. pi. 14. tig. 2 (carpus and 

 part of metacarpus), fig. 3 (tarsus and metatarsus), pi. 16. fig. 1 

 a, />, c (skull). — F. Cur., Dents des Mamm. p. 183. no. 72 (denti- 

 tion), 1825.— Schreb., Saugth. pi. 239 E. fig. (dentition).— Blainr., 

 Ost. G. Mvopotamus, pi. (skeleton). — Brandt, Mem. Acad. St. 

 Petersb. vii. taf. 8. figs. 9-14 (skull).' 



Cervical vertebrae 7 



Dorsal 14 



Lumbar 5 



Sacral 3 



Caudal 26 or 27 



(/. Skull : adult. North America ? 



*b. Skull: half-grown. North America. 



r. Bones of the body. Chili. 



