ALYTES. 



177 



Measurements (in millimetres) . 



From snout to vent . 

 Length of head 

 Width of head 

 Diametei- of eye 

 Interorbital width 

 From eye to nostril . 



„ „ end of snotit 

 Diameter of tympanum 

 Fore limb 

 Hind limb 

 Tibia . 

 Foot . 



3. 



? 



40 



12 



17 

 4'6 

 4-5 

 3-5 

 6 

 3 



19 



45 



14 



12-5 



1, 2, Merida, Spain : Bosca. 3. Badajos, Spain : Bosca. 



Skeleton. — Apart from the stouter and shorter 

 limb-bones, the skeleton of this species differs from 

 that of the preceding in the larger nasals, which over- 

 lap the ethmoid and the inner borders of which meet 

 along their entire length, in the constricted fronto- 

 parietals, and in the shape of the fronto-parietal 

 fontanelle, which is divided into two portions between 

 which the fronto-parietals form a bridge ; the anterior 

 fontanelle is large and kite-shaped, the posterior very 

 small, a mere foramen between the fronto-parietals. 



Fig. 66. 



Upper view of skull and lower view of left foreai'm and hand. 



The coracoids and prsecoracoids are more flattened 

 and more robust, and the metacarpal and phalanges 

 of the outer finger are shorter and more massive ; the 

 terminal one in particular being extremely short, 

 nearly hemispherical. The femur is slightly longer 

 than the tibia. 



The more strongly ossified cranium is correlated' 



M 



