136 LIZARDS OF THE PHILIPPINE ISLANDS 



Genus CALOTES Cuvier 



Calotes Cuvier, Reg. Anim. 2: 35; Boulenger, Cat. Liz. Brit. Mus. 1 

 (1885) 314. 



'Tympanum distinct. Body compressed, covered with equal- 

 sized scales. A dorso-nuchal crest. A more or less developed 

 gular sac in the male ; no transverse gular fold, or a very feebly 

 marked one. Tail round or feebly compressed. No femoral 

 or prseanal pores." (Boulenger.) 



There are two species * of Calotes known in the Philippines. 



Key to the Philippine species of Calotes Cuvier. 



a}. Males, dorsal crest strongly developed.— C. marmoratus (Gray) (p, 136). 

 d\ Males, dorsal crest low C. cristatellus (Kuhl) (p. 139). 



The genus is distributed over southeastern Asia and the Ma- 

 lay Archipelago. 



Species of the genus Calotes are capable of changing color 

 rapidly. I have frequently observed brilliant green specimens 

 of Calotes cristatellus on tree trunks or on the earth which when 

 observed would fade gradually to a dull gray or dark brown 

 ■color becoming practically invisible if at some distance, so near- 

 ly do they merge into the color of their environment. 



CALOTES MARMORATUS (Gray) 

 Plate 11, fig. 2 



Bronchocela marmorata Gray, Cat. Liz. (1845) 242. 



Calotes (Bronchocela) philippinus Peters, Mon. Berl. Ak. (1867) 16. 



Bronchocela marmorata Gunther, Proc. Zool. Soc. London (1873) 



168. 

 Calotes marmoratus Boulenger, Cat. Liz. Brit. Mus. 1 (1885) 318. 



Two forms appear to merit subspecific distinction. 



Key to the subspecies of Calotes mjarmoratus (Gray). 



a\ Gular pouch moderately developed—. 0. m. marmoratus (Gray) (p. 136). 

 a". Gular pouch strongly developed C. m. sanchezi subsp. nov. (p. 138). 



CALOTES MARMORATUS MARMORATUS (Gray) 



Description of subspecies. — (From No. 169, Bureau of Science 

 collection; collected at Banaue, Mountain Province, by H. Otley 

 Beyer.) (Adult male.) Rostral small, rectangular, surrounded 

 by six scales, separated from nostril by three scales ; upper head 

 scales moderate, strongly keeled, uniform; canthus rostralis 

 formed by larger shingled scales, forming a projecting edge; 

 curved row of enlarged scales outlining the supraocular regions 



* I believe that Casto de Elera's record of Calotes ophimachus Merrem 

 for the Philippines is an error. 



