199 

 Key to the Indo- Australian species. 



A. No supranasals; an enlarged scale on the heel . 39. L. smaragdinum p. 199. 



B. Supranasals present. 



I. Dorsal scales smooth. 



Fig. 77. Section Keneuxia. Lygosoma olivaceum (Gray). 



a. 21 22 scales round the body; frontal as 

 long as frontoparietal and interparietal to- 

 gether 40. L. vyneri p. 202. 



b. 24 scales round the body; frontal shorter 



than frontoparietal and parietal together. . 41. L. nieuwenhuisi p. 202. 

 II. Dorsal scales keeled. 



1. Nuchal scales smooth or slightly keeled . . 42. L, olivaceum p. 203. 



2. Nuchal scales strongly keeled 43. L. vittatum p. 205. 



39. Lygosoma smaragdinum (Lesson). 



Scmcus smaragdinus^ Lesson, Voy. Coquille Zool. II 1830, p. 43, pi. Ill fig. I. 

 Lygosoma smaragdinum, Boulenger, Cat. Liz. Ill 1887, p. 250. 

 Lygosoma acutirostre^ Oudemans, in Semons Zool. Fors. Austr. Bd. 5 ^894, p. 141. 

 Dasia swaragdinum, Barbour, Proc. Biol. Soc. Wash. XXIV 1911, p. l6;Mem. 

 Mus. Comp. Zool. Harv. Coll. XLIV 1912, p. 91, pi. i & 2. 



Snout long and pointed, depressed; lower eyelid scaly; 



