TADPOLES FROM SIAM. 275 



same way as with B. cubjaris in Europe. The disproportion between 

 the sexes does not seen to be so great, as 1 have never seen more than 

 two or three males to one female. 



The males maj- be heard calling on almost any night in the year, 

 but whether for the mere pleasure of hearing their own voices, or for 

 sexual purposes, 1 cannot say. The clear, moonlight nights of the dry 

 months appear to stimulate them to special effort. They continue to 

 call throughout the entire night, and if the sky is overcast, sometimes 

 until quite a late hour in the morning. 



I have nothing to add to Flower's description of the tadpole. 



VOL II, DEC. 1917. 



