CALOTES 137 



on the top of head, separated from each other by four scale 

 rows; occipital scales small and spiny; nostril pierced in a 

 craterlike nasal which is separated from the second labial by 

 a single scale; eight and nine upper labials; a few temporal 

 scales slightly enlarged; tympanum large, superficial, its diam- 

 eter as large as eye opening; mental larger than rostral, 

 separating the first pair of chin shields; seven and nine lower 

 labials; gular pouch well developed, the row of scales on its 

 lower part forming a strongly serrated edge; seventy-eight 

 rows of scales around body, the upper lateral scales larger 

 than the lower ; scales on belly largest, all scales strongly keeled ; 

 a strong crest beginning on the occipital region continues dor- 

 sally to above tail, gradually diminishing in size, formed by 

 about forty lanceolate spines directed backward; the keels on 

 the six upper scale rows on side of neck point upward and 

 backward; only the row joining the dorsal crest on the body 

 points upward and backward, the others point backward or 

 backward and downward; scales on legs more or less enlarged; 

 legs well developed, the third and fourth digits on foreleg of 

 equal or nearly equal length; the foreleg adpressed backward 

 reaches the groin ; fourth toe on hind leg longer than third ; the 

 hind leg brought forward reaches the anterior corner of orbit; 

 body and tail compressed, somewhat triangular in cross section ; 

 the keels on tail scales form continuous lines. 



Color in alcohol. — Dull greenish blue, reticulated or diagonally 

 striped with light brown; a large brown area on side behind 

 foreleg; tail lavender; head dimly reticulated like body; belly 

 uniformly lavender. 



Measurements of Calotes marmoratus marmoratus {Gray). 



mm. 



Total length 550 



Snout to vent 125 



Tail 425 



Length of head 40 



Width of head between eyes 19 



Depth of head posterior to orbit 21 



Foreleg 72 



Hind leg 118 



Diameter of orbit 12 



Tympanum from orbit 8 



Variation. — A very great deal of variation occurs in this 

 species. There are four other specimens in the Bureau of 

 Science collection from Banaue, Mountain Province. In all of 

 these the nuchal and dorsal crests are differentiated, the spines 



