274 DR. MALCOLM SMITH ON 



while M. iKlodijtoides was at a higher level, where the water was shal- 

 low and the current swift, M. Jiassellii lived lower down, in deep pools 

 of nearly still water. The fat, rounded, body of this latter tadpole was 

 in marked contrast to the flattened shape of the former that lived con- 

 tinually in running water. 



Those which I brought to Bangkok seemed in no way incon- 

 venienced by the higher temperature. They fed freely upon both 

 animal and vegetable matter, but their development was slow, as has 

 already been remarked with the tadpoles of this genus. Judging from 

 their rate of growth I should imagine it was not complete under about 

 five or six months. Even after the fore-limbs had appeared, no ap- 

 parent reduction in the size of the tail took place for many days, and 

 it was at least two weeks later before the creature left the winter. Like 

 M. hasseltii too, which I have reared, the young ones evinced little or 

 no desire to feed, and did not survive many weeks. 



Megalophrys hasseltii (Tschudi). 



Leptobmchium hasseltii. Blgr., P.Z.S. 1890, p. 37 ; Butler, .Imirn. 

 N. II. S. Bonibav, XV, p. .397 (i;)04) ; van Kampen, (?) in Webers 

 Zo.ilos. Ergebn', Rd. IV, p. 408 (1907). 

 Mfffiilop/ni/s iHisseltii, van Kampi'ii, Natniirk. Tidscli. Ned.-Ind., 

 LXIX.'p. 27, pi. II (1909) ; Aiinandale, Mem. As. Soc. Bengal, 

 VI, p. 1.53, pi. VI (1917). 

 This species appears to be found upon most of the hills in nor- 

 thern Siam and along the western boundary, and I have obtained the 

 tadpoles in .lanuary, April and July. They have always been found in 

 deep pools where the water is comparatively sluggish. 



Annandale has recently described the three different colour 

 varieties of this tadpole, and all my specimens ( which are from the 

 North) agree with his var. B., from the Dawna hills in Tenasserim. 



Bufo melanosticas Schneid. 



Flower, P. Z. S., 189fi, p. !UI, pi. XLIV, fipr. 3: Van Kampen, 

 Nntnuik. Tijdscli. Ned.-InJ., I.XIX. p. 29. 



Van Kampen states that the common Asiatic toad breeds 



tliroughout the year in Java, and the same may be said of those in 



Bangkok. A special increase of sexual activity, however, appears to 



take place in November with the advent of the dry, cool weather ; and 



.it that time numbers of them may be found congregated together, in the 



JOURN. NAT. HI.ST. SOC. SIAM 



