BY MALCOLM A. SMITH. 23 



band on either side of the head from behind the eye curving on 

 to the nape and bordered with white below, followed by two 

 pairs of elongated blackish spots on the shoulders and less 

 aetined ones on the back ; belly brownish ; tail with alternate 

 bands of light and dark colour. 



From snout to vent 75 mm., tail 93 ; fore-limb 31 ; hind-limb 

 42. 



Variation. Nine males and three females from the type 

 locality (Nos. 8054 to 8066 inclusive) ; one male and two 

 juveniles from Mt. Poi, at the foot and at 4000 feet (Nos. 

 7661, 7662, 7667) and one female from Lundu (No. 7659) 

 show the following variations : — 



The preanal pores in the males vary in number from 10 to 

 16 ; in the females there is an angular series of enlarged preanal 

 scales, pitted but not perforated ; in some examples the hind- 

 limb reaches as far as the tympanum ; some are almost black 

 in colour with the markings very indistinct, in fact the general 

 impression given by the series when taken out of spirit and laid 

 on the table is blackish with faint pale markings. 



Through the kindness of Mr. C. Boden Kloss, Director of 

 Raflfles Museum, Singapore, I have been able to examine all 

 the specimens of Gonatodes in that Institution. The series in- 

 cludes examples of G. kendallii from Kuching, Sarawak, from 

 Bukit Timah, Singapore, and from Great Natunas, and five 

 specimens of G. affinis from Penang (topotypes) and Maxwell's 

 Hill, Perak. To this latter species I now refer the specimen 

 from Eraser's Hill recorded by me as G. kendallii in Journ. 

 F. M. S. Mus., 1922, x, p. 268. 



With this abundant material for comparison I have drawn 

 up the following key which will serve to distinguish these four 

 closely allied forms : — 



1. Base of raised portion of digits with transverse plates beneath; tail 

 with a median series of enlarged scales below. 



Male without preanal pores ; tail with a median row of 

 pointed semi-erect scales below ; enlarged dorsal tuber- 

 cles distantly placed in more or less regular rows. 

 Borneo and Malay Peninsula ... ... G. kendallii. 



Male with 2 to 8 preanal pores sometimes absent 

 altogether; tail with a median series of enlarged 

 pointed, not erect scales below; enlarged dorsal tu- 

 bercles distantly placed in more or less regular rows. 

 Siam. ... ... ... ... G. siamensis. 



