83 



Bufo asper Boulenger, Vert. Fauna Mai. Penins., Rept. and Batr., London, 1912, 

 p. 271, fig. 74 (vertebral column and pectoral arch), fig. 75 (open mouth). 



? Bufo obscurus Barbour, Mem. Mus. Comp. Zool. Harvard Coll., XLlV N°. 1 

 1912, p. 75, pi. VI, fig. 20. 



Habit stout. Head broader than long, with a broad and 

 flat supraorbital and a thick supratympanic bony ridge; snout 

 obliquely truncate, shorter than the upper eyelid, as deep as long; 

 canthus rostralis angular; Ioreal region nearly vertical, flat; nostril- 

 nearer to the tip of the snout than to the eye; interorbital space 

 broader than the upper eyelid; tympanum more or less distinct, 

 vertically oval, its longest diameter l / 3 to 2 / 5 the width of the 

 eye. Tips of fingers and toes blunt; first and second finger 

 equal in length; toes nearly entirely webbed, the two distal 

 phalanges of fourth toe included only by a narrow fringe; 

 subarticular tubercles well developed, single; a large elliptic 

 inner and a somewhat smaller outer metatarsal tubercle; a 

 distinct tarsal fold; the heel reaches the eye, the tarso -meta- 

 tarsal articulation the tip of the snout or beyond. 



Upper surfaces with very prominent, conical, spinose tuber- 

 cles of various sizes; parotoids distinct, usually a little shorter 

 than the diameter of the eye 1 ), subtriangular or roundish; 

 coarsely granular below. 



Uniform brown or blackish above, sometimes spotted with 

 crimson ; the tubercles with a brownish or yellowish tip ; yel- 

 lowish beneath, uniform or spotted with black. From snout 

 to vent 260 mm. 



Male with a subgular vocal sac. 



Tadpole. — Length of body about once and a half its 

 width and about 3 / 4 the length of the tail ; tail about 3 times 

 as long as deep, its muscular part more than half as deep as 

 the total depth. Nostril much nearer to the eye than to the tip of 

 the snout; eyes on the upper surface, as far from tip of snout 

 as from spiraculum, the distance between them a little more 

 than once and a half that between the nostrils and half the 

 width of the mouth; spiraculum lateral, sinistral, directed 

 backwards, in the middle between the vent and the anterior 

 border of the eye; vent median. Tail with rounded tip; the 

 crests low, convex, the upper one a little deeper than the 

 lower and not reaching the base of the tail. 



1) In some specimens of N.-Borneo they are large, as long or almost as long 

 as their distance from the end of the snout. 



