REPTILES AND BATRACHIANS FROM SIAM AND INDO-CHINA. 209 



Total length 93 mm., head and body 34. Differs from the 

 typical form described by Boulenger (Ann. Mus. Civ. Genova, 1895, 

 (2) xiv. p. 615) in the greater average number of scales round the 

 body, 28-32, in the average shorter legs, the hind limb reaching only 

 to the digits or the elbow of the adpressed fore-limb, in the pre- 

 frontal shields forming a broad suture, and in having 5 well-defined 

 light stripes, instead of a single vertebral one. 



Six specimens examined, all from the type locality, shew the 

 very distinctive colouration of this new race, which is as follows : — 



Black above, with 5 greenish- white dorsal stripes, namely, a 

 vertebral one from the tip of the nose to the root of the tail, a dorso- 

 lateral pair from the upper eyelid to above the thigh, and a lateral 

 pair from the upper lip to the groin, the black edging to the latter 

 being less clearly defined than in the others. Throat and belly 

 greenish- white ; tail light brownish with black dots along the sides. 



I have not compared my specimens with any of the typical 

 form from the Malay Archipelago, but have done so with a good 

 series from Siam and the Malay Peninsula. 



Indications of this multiplication of the dorsal stripe are 

 shown in some of my Siamese examples from as far south as Hat 

 Sanuk (Koh Lak, Lat. 12° N.), the dorso-lateral pair being present, 

 but with tli'. dark edging outside indistinct, and that only in the 

 anterior part of the body. 



One juvenile from the north of Siam (No. 3169) has 3 well 

 marked light stripes throughout the whole length of the body ; and 

 further collections from this region may establish a race with 3 light 

 stripes only. 



Another juvenile from Chet Ton (N. Siam), on the border of 

 French Laos, is intermediate between this form and the one from 

 Annam. 



VOL. IV, NO. 4, 1922. 



