142 LIZARDS OF THE PHILIPPINE ISLANDS 



scales in temporal region; tympanum large, its diameter more 

 than two-thirds that of eye ; a row of enlarged scales above and 

 extending somewhat back of tympanum; mental large, trian- 

 gular, followed by two diverging series of chin shields, only 

 the first pair of which is in contact; first two pairs in contact 

 with labials, eleven scales in each series; nine and ten lower 

 labials ; scales on chin very irregular in size with seven or eight 

 enlarged tubercles on throat below angle of jaw; gular pouch 

 quite large; a strong fold in front of shoulder; scales on sides 

 of neck minute, with four or five very large, conical tubercles 

 arranged in a longitudinal row; on upper part of each side 

 of body a series of groups of enlarged scales, six or seven 

 groups to base of tail, which form a row parallel with dorsal 

 crest; dorsal crest begins above tympanum and continues to 

 base of tail, and is composed of numerous lanceolate spines, 

 sixty in all; nuchal and dorsal crests continuous but spines 

 somewhat smaller above shoulder; none of the spines as high 

 as diameter of orbit; caudal crest with sawlike edge higher 

 than tail at base, extending about one-fourth the length of tail; 

 about twenty-two scales in a vertical row on widest part of cau- 

 dal fan; scales on back small, keeled, the keels directed upward 

 and backward ; scales near dorsal crest largest ; scales on breast 

 in front of insertion of arms greatly enlarged; numerous en- 

 larged scattered scales low on sides, continuing somewhat on 

 abdomen ; belly scales numerous, more or less regularly arranged 

 in transverse rows, and the ends of scales notched somewhat; 

 a series of femoral pores, fourteen or fifteen on each side, in 

 single broken rows, separated medially; scales under tail very 

 strongly keeled, the keels forming continuous lines; limbs well 

 developed, the anterior reaching a little beyond snout, the poste- 

 rior reaching to about eye; scales on limbs strongly keeled, 

 those on anterior aspect of upper arm and thigh much enlarged ; 

 third and fourth fingers equal; fourth toe much longer than 

 third; digits of arm with slight lateral fringes, equally wide 

 on each side; toes with broad lateral fringes; that on outer 

 side of toes widest ; composed of thirty-five transversely widened 

 scales on fourth toe; about same number of scales on inner 

 fringe but these are very much smaller; claws strong. 



Color in life. — Olive to greenish slate, spotted or reticulated 

 with black; tail brownish with irregular lighter areas; belly 

 greenish slate to yellowish; head brownish, labials and chin 

 bluish slate. 



