562 M. G. A. BOULENGER ON THE [NoV. 16, 



The body is twice and a half or three times as long as the head. 

 There is no important difference between the sexes in this respect. 



The fore limb is always shorter than the body. The fingers are 

 either rather obtuse or very pointed. To whoever has not examined 

 a great number of specimens it would appear as if two varieties 

 might be established on account of the different shape of the fingers ; 

 but that would certainly not be natural, as there are intermediate 

 specimens which could not be placed in either of the two varieties : 

 nevertheless this is a very remarkable fact, which 1 have not met 

 with in any other species of Bufo. The first finger is generally 

 shorter than the third, and always longer than the second, which is 

 as long as the fourth ; the subarticular tubercles are simple. The 

 principal palmar tubercles are a little smaller than in the preceding 

 species. 



The hind limb being carried forwards against the body, the 

 metatarsal tubercles reach the tympanum or the anterior corner of 

 the eye ; the calf is much longer than the head, and without any 

 trace of parotoid-like gland. The tarsal fold is narrow and very 

 distinct, extending at least two thirds the length of the tarsus. The 

 metatarsal tubercles do not differ from those of B. viridis. The toes 

 are moderately elongate, slightly depressed, the fourth one third 

 longer than the third, and show the same variations as the fingers, 

 being either obtuse or pointed ; they are one third webbed ; the sub- 

 articular tubercles are pointed and very prominent. 



The back and sides are covered with irregular depressed, sometimes 

 spinous warts, the pores of which are generally not distinct to the 

 naked eye ; the upperside of the limbs is more or less warty. Young 

 specimens exhibit along the outer edge of the forearm a row of very 

 prominent rounded tubercles, which can also be seen, but much less 

 prominent, in adult individuals. The lower surfaces are covered 

 with small granules, which, contrary to what is seen in the preceding 

 species, are not larger on the lower belly and under the thighs ; 

 behind the thighs are larger pearl-like ones ; there are large rounded 

 tubercles under the tarsi. 



The upper surfaces are brown, greyish, or reddish, with or without 

 a yellowish vertebral line ; the young always show on each side of 

 the back three or four dark brown or reddish black-margined spots, 

 and two others, chevron-shaped, between the eyelids ; there are also 

 vertical ones on the sides of the head, and transversal ones upon the 

 limbs. In the adult these spots often become indistinct, irregular, 

 or entirely absent. Sometimes then the upper surfaces are entirely 

 dark greyish-brown, with scarcely any traces of the dark regular 

 spots, and with some large, irregular, distant white spots. The 

 lower surfaces are greyish, immaculate, or sometimes with reddish- 

 brown burnt-like spots. The throat is blackish in males. 



Males do not differ considerably from females ; they possess a 

 little-developed subgular vocal sac, the internal openings of which are 

 double in all the specimens I have examined. Blackish rugosities 

 cover the inner surface of the first two fingers during the breeding- 

 season. 



