Rana Draytonii 



is considerably greater than the width of head between the eyes, 

 and the webs are much larger than in either Rana cantdbrigiensis 

 or Rana sylvatica. 



RANA DRAYTONII, BAIRD AND GIRARD 



IDENTIFICATION CHARACTERISTICS 



Colour: Female Reddish brown on the upper parts, with 

 or without darker spots. The region below and behind the eye 

 (including the ear) may be dark brown in colour. A yellowish 

 band along the jaw from the shoulder to the eye. Arms, legs, 

 and upper sides irregularly spotted with dark; the legs may 

 be transversely barred. Underparts light, spotted, and marbled 

 with dark. Lower sides of body and underparts of legs and feet 

 bright red. Rich mosaic arrangement of black and yellow on upper 

 leg and side of body where they rest against each other. The 

 male is less rich in colouring. It is greyish brown or yellowish, 

 is more likely to be distinctly spotted, and has much less red. 

 In both sexes, the palm of the hand and the sole of the foot are 

 purplish grey in colour. (See Colour Plate XV.) 



Measurements: Size large, i. e. adult males 2| to 4! inches 

 (Figs. 255 and 256), females still larger. The length of the head 

 is contained three times in the total length of head and body. 

 The lower leg is somewhat longer than the upper leg. The 

 length of the leg to the heel is not as great as the combined lengths 

 of head and body. 



Structure: The skin is tuberculated, especially in old speci- 

 mens. (Fig. 255.) Buttocks granulated. Head broader than 

 long, rounded in front. Body broad and heavy. Canthus 

 rostralis fairly prominent. The ear is smaller than the eye. 

 (Fig. 251.) A glandular ridge extends backward from under 

 the eye, narrowing to the arm. This ridge is interrupted at the 

 angle of the jaw, and also back of this, where the curving ridge 

 descends from the eye to the shoulder. (See Fig. 255.) The 

 lateral folds are distinct, and are perforated with minute pits. 

 There is a conspicuous fold of skin over the ear from eye to 

 shoulder. The legs are massive in full-grown specimens. The 

 tubercles under the toe-joints are especially conspicuous. The 

 inner tubercle of the sole is medium in size; the outer, small or 

 lacking. (Fig. 252.) A distinct tarsal ridge. The fingers are 



213 



