BATRACHIAANOURA. 23 



All the specimens of this species were collected 011 Puget's Sound, 

 Oregon. 



- - 



Plate II, fig. 13, represents Rana pretiosa, size of life. 



Fig. 14, a profile view of the head. 



Fig. 15, the head, seen from above. 



Fig. 16, the head, from beneath. 



Fig. 17, under surface of the left hand. 



Fig. 18, under surface of the left foot. 



3. RANA DRAYTONI, B. & G. 

 (Plate II, figs. 19-24.) 



CAR. SPEC. Tijmpano oUongo et amplo. Palmis ei plantis plani* ; 

 digitis pahnarum robu-sfis. Cruribus permagnis. Femori et tibia 

 tantummodo non cequalibus, et dimidiam corporis longitudinem fere 

 attingentibus. Plantarum digitis ad articulum terminalem usque 

 pahnatis. Oblongo et cnrneo processu in bat* primi plantarum digiti, 

 nee non tubercido circulars et rudimentari in base tarsi ex adverse 

 lon<ji**imi plantarum digiti. Cute supra minutissime gramdata. 

 Plicatura glandulari super oris anf/ulnm, et ampla carirta in 

 utroque later e. 



SPEC. CHAR. Tympanum oblong and rather large. Hands and feet 

 underneath smooth ; fingers stoutish. Legs very large. Femur 

 and tibia nearly equal, about half the length of the body. Toes 

 webbed to the terminal joints. An oblong horny process at the 

 base of the first toe, and a round rudimentary tubercle at the base 

 of the tarsus, opposite the longest toe. Skin finely granular above. 

 A glandular fold above the angle of the mouth, and a broad ridge 

 on each side. 



SYN. Rana draytonii, B. & G. Proc. Acad. Nat. Sci. Philad. VI, 1852, 174. 



OBSERV. By its hind legs this species is intermediate between R. 

 aurora and R. predosa, since these organs are very much developed, as 

 is the case in the former, and the toes webbed almost to their tips, as 

 in the latter. 



