30 



Fig. 24. Distribution of Biifo xeros. 



Biology 



They breeds in September-October and February-March. The 

 tadpole reaches 34 mm total length. Metamorphosed individuals 

 measure 10.5-15 mm SVL. 



Distribution 



A species of semiarid regions south of the Sahara, also 

 found in the mountains of Hoggar (Algeria), Air (Niger), and 

 Adrar (Mauritania) (Fig. 24). 



Bibliography 



Angel (1944), Angel and Lhote (1938), Dekeyser and 

 Villiers (1956), Joger (1981), Guibe (1950), Lavauden (1926), 

 Scortecci (1936), Siboulet (1969), Tandy et al. (1976). 



Bufo pentoni Anderson, 1893 (Figs. 6f, 25-26) 



Bufo pentoni Anderson, 1893. Ann. Mag. Nat. Hist., (6) 12: 440. 



Diagnosis 



Small, brownish coloured toad. Paratoid glands 

 conspicuous, nearly parallel, somewhat separated posteriorly. 

 Tympanum higher than wide. Three very conspicuous digging 

 tubercles, one tarsal and two metatarsal. 



Size 



Snout-vent lengths to 64 mm in males and 75 mm in females. 



Description 



With large central palmar tubercle and another reduced one 

 on first finger. Subarticular tubercles single except doubled 

 distal one of fourth finger. Breeding male with conspicuous 



