16 Barboui — Ncir Lizards and New Toad from Dutch East Indies. 



two crossing, irregular, zig-zag lines of light spots, many of which have 

 black centers. The crossing lines enclose areas which are roughly diamond 

 shaped. The region where these lines occur is that between the fore and 

 hind-limbs. On each side an irregular dark hand, more or less broken 

 up into squarish blotches by white vertical lines. This lateral hand is 

 not edged below with a lighter color, but fades away gradually into the 

 yellow of the belly. There are two light longitudinal stripes on the sides 

 of the tail, with brown above and yellow below. 



Although the great majority of the wide-ranging skinks do not seem to 

 show any definite variations connected with the locality from which they 

 come, nevertheless two of these lizards do separate into distinct geographic 

 races. The first which I shall discuss is 



Dasia smaragdinum (Lesson). 



Lesson, Voy. Coquile Zool. II, 1830, p. 43, pi. ."., tig. 1. 

 Boulenger, Cat. Liz. B. M., Ill, 1887, p. 250. 



Type locality. — Oualan, Caroline Islands. 



Lesson figured and named not only this species from Oualan, but also 

 what he called Scincus viridipunctus (pi. 4, tig. 1). A comparison of 

 these figures with large scries from New Guinea, Waigiu, Johi, and New 

 Britain islands, from the Pelew, Marshal, and Caroline islands, and 

 then from Cerain, Ternate, Obi, and Hahnahera, shows that Lesson's 

 figure of smaragdinum was undoubtedly drawn from a Papuan individual. 

 The examples are all the same and unvarying in color for three races 

 based upon definite and unchanging color-phases which do not seem to 

 be correlated with modifications in the squamation. All of the Papuan 

 specimens without exception — I have before me more than 50 — are vivid 

 green over the anterior part of the body; while the posterior may lie 

 either green or may fade to a reddish buff color. This type of coloration, so 

 far as the material in hand shows, never occurs in the Marshal, Caroline, 

 or Pelew islands, nor from the Moluccas; and this skink may he called 

 D. smaragdinum smaragdinum (Lesson), based upon pi. 3, fig. I, the 

 characters being there excellently shown, though the locality of the 

 specimen evidently is incorrect. It may be mentioned here that some 

 of the other lizards recorded or described from the Carolines by Lesson 

 need confirmation. All of the Polynesian specimens at hand, — ten from 

 Ebon, Marshal Islands ; two from Pelew, and two from Ruk in the Caro- 

 line Islands, — are all alike and unvarying in color. This is the form 

 represented by Lesson in pi. 4, fig. 1. It may be known as: D. smarag- 

 dinum viridipunctum (Lesson). The specimens from the Moluccas 

 which I collected are as follows: two from Wahaai, one from Piru, Ceram ; 

 six from Ternate ; six from Obi ; two from Galela, Hahnahera Island, all 

 fall together into another series, not a single specimen varying in the least 

 towards the two races which we have mentioned. These individuals may 

 be taken to represent: 



