108 LIZARDS OF THE PHILIPPINE ISLANDS 



e^. Wing membranes with rows of rectangular brown spots above, 



black spotted below D. volans Linnasus (p. 109). 



e^ Wing membranes of male with dark brown meshwork inclosing 

 greenish white spots; immaculate below. 



D. reticulatus Giinther (p. 110) 

 d?. Snout longer than orbit; tympanum as large as eye opening; 

 wing membranes of female black marbled above, with one or 

 two black spots on outer edge below. 



D. guentheri Boulenger (p. 111). 

 c^ A larger spinelike scale on the superciliary border. 



c^. Largest median dorsal scales at least twice as large as ventral 

 scales; tympanum as large as eye opening; males, wing mem- 

 branes brown with five large blue spots between ribs, black 

 spots below; females, wing membranes black with blue spots; 



below immaculate D. everetti Boulenger (p. 112). 



cf. Dorsal scales hardly larger than ventrals; tympanum smaller 

 than eye opening; wing membranes above spotted or marbled, 

 black, below with spots or crossbands; lower surface of legs 

 and a broad zone on belly blue; males, gular appendage red. 



D. cornutus Giinther (p. 114) . 

 (f. Dorsal scales about equal to ventrals; tympanum equals eye 

 opening; males above yellow-green to bluish; wing membranes 

 blackish with wash spots of blue or green, below salmon or 

 red with one or two small black spots; females gray, wing 

 membranes black with rounded salmon spots, with salmon in- 

 side the outer border; below very large curved dark spots. 



D. rizali Wandollek (p. 115). 

 6^ Adpressed hind leg reaches halfway from elbow to insertion of fore- 

 arm; tympanum, if distinct, smaller than eye opening. 

 c^. Snout longer than diameter of eye; a Y-shaped series of scales on 

 forehead, a low compressed scale frequently present on super- 

 ciliary edge; tympanum scaled or partly bare; wing membranes 

 above blackish, inclosing whitish spots, below with a few black 



spots D. ornatus (Gray) (p. 117). 



c". Snout nearly equals diameter of orbit; tympanum scaled. 



d}. A Y-shaped series of scales present or absent; males, with wing 

 membranes spotted above with brown; below with black spots; 

 females, wing membranes black with narrow 'whitish lines or 



white spots D. spilopterus (Wiegmann) (p. 119). 



rf^ A Y-shaped series of scales on head; male, minute gular appendage 

 longer than head; males with wing membranes yellow above, 

 immaculate or with minute darker flecks and edged with 

 darker; female dark with narrow whitish or grayish lines, 



a few dark spots below D. quadrasi Boettger (p. 123). 



&. Snout shorter than orbit; head small; tympanum scaly; male 

 gular appendage shorter than head; males greenish to bluish 

 gray with transverse spots, a black white-centered spot at corner 

 of mouth; females same with two dark black-blue transverse 



stripes on neck D. bimaculatus Giinther (p. 126). 



a^ Nostrils directed upward; snout as long as diameter of orbit; tympa- 

 num scaled D. mindanensis Stejneger (p. 128). 



