440 On a new Species of Buf o from Egypt. 



ventral, and sometimes a few obscure dusky small spots are 

 seen between the angles of the ventrals and their keels. 



The first specimen of this snake (a young one) was observed 

 by Mrs. Anderson in the desert to the east of Helouan, near 

 Cairo. Dr. Rogers Pasha sent me two adults from Beltira, 

 between Rosetta and Damietta ; and an Arab in charge of the 

 salt concession at Shaloof, near Suez, forwarded two speci- 

 mens from that locality. 



I have much pleasure in connecting Dr. Rogers's name 

 with this new form, as he has given me most invaluable 

 assistance in my researches in Egypt. 



Sufo Pentoni. 



This toad in its general appearance resembles tlie pale 

 irregularly spotted form of Biifo regidaris^ Reuss, so common 

 in Egypt. So far, however, as its real affinities are con- 

 cerned, it seems to be most closely allied to B. viridis ; but it 

 is at once distinguished from all the Old- World toads by the 

 presence on the middle of the tarsus of a well-marked hoi'ny 

 tubercle. The front of the snout of the adult is covered 

 with a horny induration extending from the nostrils to the 

 anterior angle of the eye, and backwards and between the 

 eyes to the commencement of the inteiorbital space, but more 

 or less traversed in the mesial line by a longitudinal furrow. 

 This protection to the snout, the presence of two metatarsal 

 tubercles, the innermost of which is a powerful shovel-shaped 

 structure, and the existence of the tarsal tubercle, are features 

 which would seem to indicate that this is a burrowing toad. 

 The tympanum is vertically oval, and its transverse diameter 

 equals about one half of the diameter of the eye from cantlms 

 to canthus. The breadth of the upper eyelid equals the inter- 

 orbital space. The paratoid is large and somewhat oval in 

 shape. The limbs are rather short and stout, and the hind 

 limbwhen laid forwards has the tarso-metatarsal joint reaching 

 the ear. The toes are moderately webbed. 



The general colour in alcohol is olive-grey with a yellowi.sli 

 tinge, irregularly covered with more or less confluent dark 

 markings. A darkish band across each eyelid. Tlie dorsal 

 glandules may be either reddish or yellowish. 



This species was found by Dr. Penton, of the Egyptian 

 Army, whose name I have associated with it, in the Shaata 

 Gardens, situated about one mile outside Suakin. I am 

 indebted to him for many other most interesting specimens 

 from Suakin. 



