46 COPIIIAS WAGLERI. 



35 streaks , which are half white , half brownish colored. 

 No black , nor yellow , nor black edged scales , so charac- 

 teristical in the adult ones , are to be seen in these young 

 specimens of B. Wagleri. 



It is very interesting to remark the difference in the 

 number of scales in a transverse series at the same place 

 of the body in two different embryos of the same mother. 

 Among the 20 embryos of the same mother I 

 found in one specimen the largest number of 

 scales in a transverse series to be 21, in others 

 it was 23, in still others the number attained 

 to 25. 



This fact removes Blanford's objection against the iden- 

 tity of Tr, maculatus and B. Wagleri ^). 



The great difference in coloration between the adult and 

 the young specimens would lead us to expect a great num- 

 ber of intermediate forms ; nevertheless these intermediate 

 forms seem to be very rare. 



Among all the specimens in the collection of the Leyden 

 Museum there is only one B. Wagleri, which shows at 

 the same time traces of the coloration of the young and 

 the adult state. This specimen was captured at Padang 

 and has a length of 53 cm. The green color is here still 

 prevalent, though the scales of the body are already edged 

 with black , except those which form the cross-bands. 

 These cross-bands are of a somewhat yellowish-green color, 

 and on nearly each of them is a small white spot, which 

 remembers the white markings of the young specimens. 

 The crown of the head is covered with small green scales, 

 some of them edged with black. The line on the sides of 

 the head, chiefly behind the eye, is pure white with a 

 brownish line beneath and a yellowish tinge above. The 

 labialia are green , some of them yellowish-green. The an- 

 terior part of the tail has green cross-bands with white spots. 



Not all the young B. Wagleri get in the adult state 



1) W. F. Blanford, On reptiles and frogs of Singapore, in Proc. Zool. Soc. 

 1881. p. 224. 



^N'otes from the Leyden Museum, "Vol. VIII. 



