EEPTILES. 4G1 



9. KANA TEMPOKANIA. Vanlig Groda. The Common 



Frog. 



Subject to much the same variations in colour as tho 

 British frogs ; usual length here 8 in. 2 1., of which the 

 body to the anus is 3 in. 2 1. ; front legs 1 in. 7 1. ; hind 

 legs 5 in. 4 1. 



Is certainly the commonest of all the Scandinavian rep- 

 tiles, and goes furthest north, for they are met with in all 

 parts, from the very south to far up in Tornea Lapmark. 

 Is common even up at Hammerfest and Tromsoe, and on the 

 Norwegian fells ; goes higher than the limits of tree vegeta- 

 tion. 



Three species of frog are included in the Scandinavian 

 fauna, and one of them, Eana arvalis, Nilss., is in all proba- 

 bility nothing more than a local variety of the common frog. 

 Clermont does not notice it in his " Quadrupeds and Eeptiles 

 of Europe." 



10. K. AEVALIS, Nilss. Aker G-roda. 



Colour above marbled with black, and three longi- 

 tudinal pale bands ; more pointed than in the common 

 frog ; a black spot through the tract of the ear, and a 

 black streak through the nostrils; size about that of 

 the common frog. 



The principal differences, according to Nilsson, lie in the 

 osteology of the two species. In JR. Arvalis, if a cross 

 line is drawn across the head from the front edge of the 

 eyes, the distance from that to the point of the nose, will be 

 the same or even longer than that between the edges of the 

 eyelids in front, and one and a half times as long as the 

 distance between the nostrils. 



In the E. Temporania, this is quite different. In the 

 latter the long toe on the hind foot has two joints protrud- 

 ing from the web; in the R. Arvalis always two and a half 

 or three. 



Has been taken in many places in Sweden as far up as 

 Upsala. In the summer is principally found in grass fields 

 and among potatoes. 



