GEOGRAPHICAL DISTRIBUTION. 119 



It may also not be without interest, in order to 

 bring out their associations, to enumerate the species 

 occurring in the environs (i. e. a radius of about fifteen 

 miles) of some of the principal towns the Batrachian 

 fauna of which lias been thoroughly searched by com- 

 petent workers. It will be seen, then, that no district 

 can boast of possessing more than ten out of the 

 twenty recognised species, and that, in spite of their 

 northern position, Paris and Bonn yield to no other 

 and are richer than many more southern localities. 



1. London (three species). 



Bufo vulgaris, B. calamita, Rana temporaria. 



2. Copenhagen (nine species). 



Bombinator igneus, Belobates fuscus, Bufo vul- 

 garis, B. viridis, B. calamita, Hi/la arborea, 

 Rana esculenta, B. arvalis, B. temporaria. 



3. Paris (ten species). 



Bombinator pachypus, Alytes obstetr leans, Belo- 

 dytes punctata*, Belobates fuscus, Bufo 

 vulgaris, B. calamita, Hula arborea, Rana 

 esculenta, R. temporaria, R. agilis. 



4. Bordeaux (nine species). 



Bombinator pachypus, Alytes obstetricans, Belo- 

 dytes punctatus, Belobates cultripes, Bufo 

 vulgaris, B. calamita, Hyla arborea, Rana 

 esculenta, R. agilis. 



5. Brussels (five species). 



Bufo vulgaris, B. calamita, Hyla arborea, Rana 

 esculenta, R. temporaria. 



6. Berlin (nine species). 



Bombinator igneus, Belobates fuscus, Bufo vul- 

 garis, l>. viridis, B. calamita, Hyla arborea, 

 Rana esculenta, R. arvalis, R. temporaria. 



7. Bonn (ten species). 



Bombinator pachypus, Alytes obstetricans, Belo- 

 bates fuscus, Bufo vulgaris, B. viridis, B. 

 calamita, Hyla arborea, Rana esculenta, R. 

 arvalis, R. temporaria. 



