224 



ZOOLOGISCHE MEDEDEELTNGEN — DEEL VI. 



Distribution. Nias, Mentawei Islands (Sipora) and Engano. 



This remarkable and rare lizard is still more restricted in its distri- 

 bution than Gonatodes kandianns. The latter species occurs in the West- 

 Sumatran islands and is known also from British India, whereas Lygosoma 

 relictum has up till now only been found in the four small groups of 

 islands west off Sumatra. 



It has a long body with short and thin limbs, not meeting when 

 adpressed ; the lower eyelid has a transparent disk ; the ear is only visible 

 by a depression that is covered with scales. 20 smooth scales round the 

 middle of the body. Brown above with four dark brown lines, the two 

 median ones broad and bordering a light vertebral band. Total length 

 129 mm. (tail 73 mm.). 



17. Dibamus novae-guineae D. B. 



Sinabang III. 1913. 4 spec. (3 9, 1 cf). 



VII. 1913. 2 spec. (19,1 cD- 



The six specimens are dark brown; snout, anal region and tail yel- 

 lowish. Two are (ƒ and have large rudiments of hind limbs. The species 

 is spread over the islands of the Archipelago between the Nicobars and 

 New Guinea. 



18. Cyclemys amboinensis (Daud.). 



Sinabang II. 1913. 4 spec. (1 juv.). 



IV. 1913. 1 spec. 



The shell of the largest specimen measures 204 mm. ; the vertebral 

 keel has disappeared except on the fourth and fifth vertebrals, where 

 traces are visible. The shields are smooth. Three other specimens are 

 somewhat smaller and show clearly the vertebral keel and two of them 

 the lines on the shields. The young one has a high vertebral keel and 

 traces of the two costal keels. 



