46 RANID^. 



snout rather elongate, acuminate ; interorbital space narrower than 

 the upper eyelid ; tympanum hardly two thirds the diameter of the 

 eye. Fingers moderate, first extending beyond second ; toes incom- 

 pletely webbed ; subarticular tubercles of fingers and toes moderate ; 

 inner metatarsal tulierclo rounded, rather prominent; no outer 

 tubercle. The hind limbs as in Rana fusca. (ilandular lateral 

 fold rather prominent. Colour much as in E. fusca and arvalis ; 

 sometimes a light, dark-edged vertebral line. Mule with two internal 

 vocal sacs. 



North America. 



a. ?Igr. c?. Lake Winnipeg. Sir J. Richardson [P.]. 



b. Several spec, Great Bear Lake. Sir J. Richardson [P.]. 

 hgr. & yg. 



c. 5 . North America. 



53. Eana iberica. 



Rana iberica, Bnuleiig. Bull. Soc. Zuol. France, 1879, p. 177. 



Closely allied to Bana fusca. Tympanum smaller, not more than 

 half the diameter of the eye ; first finger not extending beyond 

 second ; hind limb longer, the tibio-tarsal articulation extending 

 beyond the tip of the snout. Male without vocal sacs. 



Spain, Portugal. 



54. Rana latastii. 

 Rana latastei, Bouleng. I. c. 1879, p. 180. 



Closely allied to Rana ar/ilis. Tympanum smaller, scarcely two 

 thirds the size of the eye, distant from it. Beneath spotted. Male 

 without vocal sacs. 



Milan. 



55. Rana agilis. 



Rana temporaria, var. arvalis, part., Giinth. Cat. p. 16. 

 Rana temporaria, Millet, Faune Maine et Loire, ii. p. 664. 

 agilis, Thomas, Ann. Sc. Nat. ser. 4, iv. p. 365, pi. 7 ; Fatio, 



Rev. Mag. Zool. ser. 2, xiv. p. 81, pis. 6 & 7, and Verf. Suisse, iii. 



p. 333 ; De risk, Ann. Sc. Nat. ser. 5, xvii. ; De Betta, Faun. 



Ital., Rett. Anf. p. 65 ; Lataste, Herp. Gir. p. 233 ; Leydig, An. 



Batr. p. 143 ; Lessona, Atti Ac. Lincei, Mem. CI. Sc.-Jis. i. p. 1074, 



pi. iii. ; Bouleng. Bull. Soc. Zool. France, 1879, p. 183. 



gracilis, Fatio, Rev. Mag. Zool. ser. 2, xiv. p. 81. 



• temporaria, var. agilis, Schreib. HeriJ. Eur. p. 125. 



Vomerine teeth in two oblique oval groups extending beyond the 

 hinder edge of the choante. Head depressed ; snout rather elongate, 

 subacuminate ; interorbital space narrower than the upper eyelid; 

 tympanum very nearly as large as the eye, close to it. Fingers 



