GEKKO 93 



slightly depressed below, with a median series of widened plates ; 

 on regenerated part of tail the transverse plates are narrower 

 and very much longer ; all digits well developed, dilated, no trace 

 of web present; inner digit without terminal phalanx or claw; 

 ten undivided curved lamellse under inner toe, twelve or thirteen 

 under fourth toe ; ear opening oval, oblique, its greatest diameter 

 about one-third orbit. 



Color in life. — Above light grayish brown, with nine large, 

 paired, median, black-brown spots from occiput to base of tail; 

 scattered spots on sides of body and top and sides of head and 

 legs; below immaculate brownish white; many tubercles above 

 are yellowish ; yellowish spots on labials ; tail barred with brown 

 above. 



Measurements of Gekko monarchus {Dumeril and Bibron) . 



mm. 



Total length 177 



Snout to foreleg 32 



Snout to vent 85 



Axilla to groin 38 



Width of head 18 



Length of head 28 



Tail 92 



Foreleg 30 



Hind leg 40 



Variation. — This species, which is widely distributed over the 

 Malay Archipelago, Ceylon, and Malay Peninsula, shows com- 

 paratively little variation. The pores vary from thirty-two to 

 forty, according to Boulenger and de Rooij. Both of these au- 

 thors mention a rudiment of web which seems to be absent 

 in the Philippine specimens. 



Three other specimens taken in houses, in the same locality 

 as was the one described, were young females ; the markings are 

 very distinct. There is a spectaclelike marking on the occiput; 

 the tail is barred with broad brown spots, about thirteen to the 

 tip. A young specimen from Negros has the color pattern 

 dimmed and the median spots are confluent, the throat is pep- 

 pered with brown, and the underside of the tail is brownish. A 

 specimen from Palawan (No. 114, Bureau of Science collection) 

 shows the typical markings. It is light, and the light spots on 

 the labials are very distinct. 



The two specimens from Bongao are different in markings and 

 coloration. The entire body above is dark blackish gray with 

 the darker median spots indistinct and usually confluent; the 

 yellow tubercles form rather distinct, irregular, transverse lines 



