158 MR. G. A. BOULENGER ON THE REPTILES 



Fam. 2. BUFONID^. 

 1. BuFO, Laurenti, 1768. 

 Pupil horizontal. Tongue elliptic or pyriform, entire and free behind. Fingers 

 free, toes webbed. 



The true Toads form a large genus, represented over the greater part of the world. 

 Three species are found in Barbary, distinguishable as follows : — 



A. Subai'ticular tubercles under the toes all single ; a tarsal fold ; tympanum 



about lialf the diameter of the eye 1. viridis. 



B. Subarticular tubercles under the median toes in pairs. 



A tarsal fold ; first finger much longer than second 2. mauritanicus. 



No tarsal fold 3. vulyaris. 



1. BuFO viEiDis, Laurenti, 1768. 

 B. variabilis, Gervais. 



Interorbital space narrower than the upper eyelid ; tympanum about half the diameter 

 of the eye. First finger extending a little beyond second ; toes half or two-thirds 

 webbed, with single subarticular tubercles ; a tarsal fold. Above with olive or greenish 

 spots on a greyish or pinkish ground ; sometimes a yellow vertebral line. Male with a 

 subgular vocal sac. 



From snout to vent 95 millira. 



This Toad has a very wide distribution, being found over the greater part of Europe, 

 though not west of the Alps, Central and Western Asia, the Himalayas, and North 

 Africa. Common in Italy and the Baleares, but absent from the Iberian Peninsula. 

 It is known in Morocco, from Casablanca and between Mogador and Morocco, but has 

 not been found in the Northern Promontory. Strauch says it is common near Oran, 

 and Eichwald found it at Musaya, on the Algerian Atlas. Lataste received it from the 

 Plateau of Sersou, collected specimens at Oran, El Guerah, Bona, and Ghardaia, and 

 Tilremt, and found it common everywhere in Tunisia. 



The characters upon which Bufo boulengeri, Lataste (Rev. Int. des Sciences, 1879, 

 p. 438), was founded, upon a single specimen from the Plateau of Sersou, have proved 

 to be individual, and M. Lataste now entertains no doubt that the name should be 

 regarded as a synonym of S. viridis. 



2. Bufo m.\uritanicus, Schlegcl, 1841. 

 Bufo yaniherinus, Guichenot, Strauch.— £. arabicus, Gervais. 



Interorbital space concave, broader than the upper eyelid ; tympanum very distinct, 

 vertically oval, its greatest diameter not much more than half that of the eye. First 

 finger much longer than second ; toes webbed at the base, with double subarticular 



