DASIA 208 



Measurements of Dasia olivaceum semicincta (Peters). 



mm. 



Total length, tail regenerated 240 



Tail 110 



Snout to vent 130 



Snout to foreleg 46 



Snout to ear 25 



Axilla to groin 60 



Width of head in front of eye 12 



Width of head at ear 20 



Depth of head in front of eye 11 



Depth of head at ear 17 



Foreleg 35 



Hind leg 46 



Variation. — TWo specimens, one from Mindanao and one from 

 Mindoro, have twenty-eight scale rows ; in a single specimen the 

 prefrontals are barely in contact; the lamellae vary between 

 nineteen and twenty-one. In different-aged specimens the color 

 and markings vary strikingly. 



Young (extreme tip of tail regenerated.) — Length, 132 milli- 

 meters. The body above is glossy coal black with a series of 

 brilliant orange yellow bars from the tip of the snout to the 

 end of the tail ; there are three bars in front of the eye, the first 

 on rostral ; two bars in front of eye ; two bars between the eyes, 

 having only a single representative below the eye; the sixth 

 bar lies across the occipital region passing through the corners 

 of the mouth ; two or three bars across the neck ; six on the body 

 in front of the hind leg, with thirteen much wider bars on the 

 tail; the latter bars are more orange than yellow; the legs and 

 digits barred with canary yellow; the regenerated tail is brick 

 red; below, on body the bars widen and lose themselves in the 

 immaculate canary yellow of the abdomen, giving the appearance 

 ventrally of a series of black belts, the ends of which are 

 pointed and fail to meet. In a specimen 180 millimeters long 

 (snout to vent, 76 millimeters), these markings are still very 

 distinct, but the colors are brownish, the bars very narrow; 

 however, in a specimen measuring from snout to vent 92 milli- 

 meters (tail broken and regenerated), the characteristic mark- 

 ings of the young are scarcely distinguishable, save for a series 

 of lateral bars of ocellated black and cream, scarcely traceable 

 dorsally. These are the remains of the bars across the body 

 of the young. Below, bluish yellow. In a large adult, 275 

 millimeters long, the color is olive brown above with a series of 

 lateral bars of ocellated scales, widely separated from their fel- 

 lows dorsally. Traces of annulations are visible on the tail; 



