269 



Section Siaphos Gray (fig. 94). 



Lower eyelid scaly or with a transparent disk; ear-opening 

 hidden or very small ; no supranasals. Praefrontals small or 

 absent ; frontal not broader than the supraocular region. 

 Limbs short. y 



Fig. 94. Section Siaphos. Lygosoma rclicluni Vincig. 



Key to the In do-Australian species. 



A. Lower eyelid with a transparent disk. 



I. The adpressed hind limb reaches the wrist ; 

 22 scales round the body; 20 — 25 lamellae 



under the fourth toe no. Z. infralineolatum p. 269. 



II. The adpressed hind limb does not reach 

 the fore limb; 20 — 22 sca:les round the 



body; 18 lamellae under the fourth toe . in. L. r dictum p. 270. 



B. Lower eyelid scaly; 18 — 20 scales round 



the body 112. Z. quadrivittatwn p. 271. 



no. Lygosoma infralineolatum (Gthr.). 



Cophoscinais infralineolatus .^ Giinther, Proc. Zool. Soc. London 1873, p. 166. 

 Lygosoftta infralijteolatum.^ Boulenger, Cat. Liz. Ill 1887, p. 328, pi. XXVII, fig. I. 



Snout pointed, depressed; lower eyelid with an undivided 

 transparent disk; ear hidden under the scales, indicated by a 

 depression. Nostril in the nasal; no supranasal ; frontonasal 

 slightly more broad than long, in contact with the rostral and 

 with the frontal ; praefrontals small and separated ; frontal 

 longer than the frontoparietal, in contact with the two anterior 

 supraoculars; four supraoculars, first and fourth longest; seven 

 to nine supraciliaries ; frontoparietal single; interparietal distinct, 

 almost as large as the frontal; parietals in contact behind the 

 interparietal ; two or three pair of nuchals ; fourth and fifth 

 or fifth and sixth upper labials largest, below the eye. 22 smooth 

 scales round the body, the two vertebral series enlarged; the 



