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ZOOLOGY BATRACHIANS AMD REPTILES. 



RANA SEPTENTRIONALIS, Baird. 



Kana septentrionalis, BD., Proc. Acad. Nat. Sci. Phila., 1854, 61 (E. simiata, BD.). 



HAD. Canada to Montana and Utah. 



Very numerous in the vicinity of Provo, Utah, which, as far as known, 

 is its most soiithern and western limit. 



RANA OXCA, Cope, sp. nov. 



PLATE XXV, FIGS. 1, 2,3. 







Head oval ; muzzle sloping to the lip. Diameter of tympanic mem- 

 brane equal distance between nares and between nostril and orbit, and 

 three-fourths the diameter of the orbit or the distance from nares to 

 margin of lip in front. Vomerine teeth in fasciculi behind the line connect- 

 ing the posterior borders of the choanee. A dermal fold on each side of the 

 back, and a short one behind the angle of the mouth, with some scattered 

 warts on the sides ; skin otherwise entirely smooth. Toes obtuse, with 

 wide webs reaching to the base of the penultimate phalange. One long 

 metatarsal tubercle ; no fold on the tarsus ; a dermal border on outer toe. 

 The heel extends beyond the end of the muzzle. 



Light-brown above ; below yellow. Three rows of rather distant, solid, 

 small, black spots between the dorsal folds ; two or three rows on each side ; 

 none of the spots yellow-bordered. Head unspotted ; no band on the lip. 

 A brown, vertical band on the front of the humerus. Scattered spots on 

 tibia and femur ; clouded spots on the posterior face of the femur. Size of 

 Rana clamata. 



This frog, of which a female specimen was obtained, combines charac- 

 teristics of different groups ; its coloration resembles somewhat that of the 

 eastern or typical form of Rana halecina, but the full palmation of the hind 



