LYGOSOMA. 85 



anterior to the subocular. Ear-opening roundish or oval, as large 

 as or a little larger than a lateral scale, without projecting lobules. 

 26 to 30 (usually 28) scales round the body, dorsals smooth or 

 more or less distinctly hi- or tricarinate. The hind limb reaches 

 tlie elbow of the adpressed fore limb. Bronze-brown above, the 

 back usually immaculate, but sometimes with five more or less 

 distinct narrow longitudinal black lines ; a broad dark brown or 

 black band on each side, bordered with pale yellow above ; sides 

 below the lateral band pale sulphur or greenish yellow ; lower 

 parts emerald green, or yellowish green. 



From snout to vent 116 millim. ; tail 214. 



Formosa, Hainan, Siam, Malay Peninsula (Jalor and Pahang). 



M. tytleri (Boulenger, Cat. p. 187 ; Annandale, Journ. Asiat. Soc. 

 Bengal (2) i, 1905, p. 142), from the Audamans, should perhaps 

 be united with M. siamcnsis. 



Genus LYGOSOMA. 

 Gray, Zool. Journ. iii, p. 228 (1827). 



Palatine bones in contact mesially ; pteiygoid bones also in 

 contact anteriorly, the palatal notch not extending forwards to 

 between the centres of the eyes. Movable eyelids ; ear distinct 

 or hidden. Nostril in a single nasal ; supranasals present or 

 absent ; prsefrontals and frontoparietals present (the latter some- 

 times fused). Limbs well developed, rudimentary, or absent. 



Eepresented in every part of the world, Europe excepted. 



Malay name, Bengkaronr/. 



Si/nojisis of the Species. 



I, Limbs well developed, pentadactyle. 

 A. Ear-opening distinct. 



1. Lower eyelid scaly ; no supranasals. 



a. The limbs overlap when pressed 



against the body. 



a. 24 to 28 scales round the body. 



24 scales round the body ; 22 to 25 lamellae 



undertbe fourth toe L. stellcdum, p. 87. 



28 scales round the body ; 20 lamellje under 



the fourth toe , L. prcesiyne, p. 88. 



/3. 30 to 34 scales round the body. 

 30 or 32 scales round the body ; no nuchals ; 



23 or 24 lamellai under the fourth toe .... L. scotophiltwi, p. 88. 

 32 or 34 scales round the body ; 3 or 4 pairs 

 of nuchals; 22 or 23 lanielte under the 



fourth toe L. sanctuvi, p. 89, 



y. 38 to 42 scales round the 

 body ; 10 to 21 lamelhe 

 under the fourth toe. 

 5 supraoculars ; the hind limb does not reach 



beyond the shoulder L. macnlutum, p. 89. 



