214 



c. 28 scales round the body; 18 — 20 



lamellae under the fourth toe .... 58. Z. longicaudatum p. 220. 



d. 28 — 30 scales round the body; 14 — 



16 lamellae under the fourth toe . . 59- L, brevipcs p. 221. 

 b. Five or more supraoculars. 



1. 34 scales round the body; praefrontals 

 separated ; five supraoculars ; one or two 

 pair of nuchals; 18 — 20 lamellae under 



the fourth toe 60. L. mulleri p. 222. 



2. 34 scales round the body ; praefrontals 

 forming a suture ; five supraoculars ; no 

 nuchals; 18 lamellae under the fourth 



toe 61. Z. jciidci p. 223. 



3. 31 scales round the body; six supra- 

 oculars; two pair of nuchals; 16 — 18 



lamellae under the fourth toe 62. L. tornieri p. 224. 



4. 26 — 29 scales round the body; seven 

 supraoculars; a pair of nuchals; 16 la- . . 

 mellae under the fourth toe 63. L. schoedei p. 225. 



II. Frontoparietal single; ear-opening punctiform 64. L. chalcides p. 225. 

 B. Limbs didactyle; ear covered 65. Z. sumatrense p. 226. 



51. Lygosoma nigriventre n. sp. 



Head small, very flat; snout short, rounded; lower eyelid 

 scaly; ear-opening oval, smaller than the eye-opening, no 

 lobules. Nostril in the nasal; no supranasals; rostral reaching 

 between the nasals; frontonasal more broad than long, in contact 

 with the rostral; praefrontals rather large, forming a suture; 

 frontal broader than the supraocular region, shorter than 

 frontoparietals and interparietal together, in contact with the 

 first supraciliary and the two anterior supraoculars; four supra- 

 oculars; eight supraciliaries; frontoparietals and interparietal 

 subequal; parietals in contact; no nuchals; fifth upper labial 

 below the eye. Body long; the distance between the tip of 

 the snout and the fore limb is contained one time and a half 

 in that between axilla and groin; 30 smooth scales round the 

 middle, dorsals largest; praeanals enlarged. Tail thick. Limbs 

 short, separated when adpressed; digits short, compressed; 

 fourth toe with 16 — 20 lamellae below. 



Reddish-brown above, with numerous lighter, dark-edged 

 spots; head with dark spots. Scales of the lower parts bordered 



