118 LIZARDS OF THE PHILIPPINE ISLANDS 



nasals conical, craterlike, rather low, pointing almost directly 

 outward, separated from rostral by two rows of scales, from 

 labials by two (sometimes three) scale rows and from each other 

 by from six to eight scales ; a Y-shaped series of enlarged, keeled 

 scales on snout, distinct; superciliary edge with a single, very 

 low, enlarged, compressed scale, sometimes replaced by two 

 or three smaller scales, or they may be entirely wanting; the 

 compressed scale on the upper posterior border of orbit very 

 prominent; all head scales strongly keeled or rugose; occipitals 

 about as large as scales on supraorbital region; interorbital 

 region with four or five rows of small scales ; eight to ten upper 

 labials, usually nine, the last usually elongate with an enlarged 

 scale directly above; posterior infraorbital scales not distinctly 

 enlarged ; a longitudinal group of prominent scales behind orbit, 

 three to five in number; tympanum scaled or partly bare; an 

 enlarged white scale surrounded by several small white scales 

 directly in front of tympanum; eight to ten lower labials; 

 mental wider than rostral ; a row of enlarged scales run back on 

 either side from mental, separated from labials by one or two 

 rows of scales ; two or three prominent spines at back of head ; 

 scales on body not or but slightly keeled with a row of keeled, 

 unequal scales on either sidei, the largest arranged in groups, not 

 continuous, separated by twenty-four to twenty-six rows of 

 scales in widest part of back ; a nuchal crest, rather prominent ; 

 foreleg brought forward reaches much beyond snout ; hind leg 

 brought forward reaches axilla ; gular appendage of male as long 

 as or minutely longer than head, very small in females; lateral 

 nuchal appendages fairly well developed ; no lateral nuchal crest. 

 Color in life. — Above metallic greenish blue with darker and 

 lighter marking; usually with a row of greenish white spots 

 covering the groups of enlarged lateral scales ; wing membranes 

 with blackish reticulations arranged so as to inclose rounded, 

 yellowish white spots arranged in continuous rows ; neck green- 

 ish; head gray-blue with black spots or bands; the interorbital 

 spot distinct ; labials and sides of head and neck lighter, spotted 

 or reticulated with black; gular appendage of male gray-blue, 

 reticulated with blackish or dark bluish spots or lines, tipped 

 with orange; chin with bluish and whitish spots or reticula- 

 tions: throat of female crossed by numerous wavy dark lines; 

 belly with a few scattered small dark specks; wing membranes 

 below with dark spots, the largest near outer border. 



