146 Journal of the Asiatic Society of Bengal. [May, 1905. 
closely both as regards lepidosis and proportions (actual and 
relative) and as regards coloration with Boulenger’s description 
and figures. Major Alcock has kindly examined some of its 
most characteristic features with me. 
LYGOSOMA SIKKIMENSE (Blyth) 
There is a specimen from Simla in the Indian Museum, 
wrongly identified as L. dorizx. 1am not aware that the species 
has been recorded hitherto from the Western Himalayas. 
LYGOSOMA TRAGBULENSE, Alc. 
L.. himalayanum var. tragbulense, Alcock, Report N. H. 
Pamir Bound. Comm., p. 86, pl. II, figs. 1, la. 
Out of eleven specimens of Lygosoma collected on the Trag- 
bal pass by Dr. G. M. Giles four belong to Alcock’s variety trag- 
bulense, while the remainder represent the typical L. himalayanum. 
Some of the latter are very much smaller than those of tragbulense, 
which, as well as the types, are fairly well grown. The coloration, 
therefore, cannot be due to youth ; and though variety in colora- 
tion in itself is not a safe specific difference in the Skinks, it may 
be taken, when it is very distinctive, as an additional reason for 
separation if combined with differences in scaling. The greater 
number of subdigital lamellae on the fourth toe which Alcock 
noted in his specimens, is constant, as are also the characteristic 
dorsal and lateral stripes, while the ventral scales have not the 
obscure dark edging common in L. himalayanum but are of 
an opaque white. There may be two scales under the eye; but 
this character is not constant. 
LyGosoma BEeDDOMII, Bler. 
The only specimen in our collection which can be assigned 
to this species differs from the descriptions in that the limbs do 
not meet when adpressed. Otherwise it conforms to Boulenger’s 
diagnosis. 
Liycosoma FoRMosuM (Blyth) 
Mocoa formosa, Blyth, J.A.S.B., (2) xxii, -p. 651; Bilgr., 
Faun. Ind., Rept., p. 205. 
The following description is based on the three types of 
Blyth’s imperfectly described species :— 
Subgenus Hmoa, Gray. 
Habit stout; head moderate; snout obtusely pointed; limbs 
well developed, overlap slightly ; head and body about 2 length of 
tail. Lower eyelid with an undivided transparent disk, no 
supra or postnasals. Nostril behind suture between rostral and 
first labial; rostral forms a straight or nearly straight sulture 
with frontonasal ; preefrontals in contact; frontal in contact with 
