192 LIZARDS OF THE 



21. Calotes cristatellus Kuhl. 



Several specimens from different localities. In some speci- 

 mens a very curious discoloration, probably resulting from 

 the action of the formolaldehyd, is to be seen : the green 

 colour having totally disappeared, and being replaced by a 

 reddish brown colour; in one specimen the head and the 

 tip of the tail are still greenish, the rest of the body 

 being reddish brown. 



22. Ophisaurus Bihttikoferi, nov. spec. 



Lateral teeth conical. Breadth of the azygos praefrontal 

 three fourth the greatest width of the frontal, as broad as 

 the interparietal and broader than the suture between 

 frontal and interparietal. It is separated from the frontal 

 by two praefrontals. Interparietal twice as broad as the 

 parietals, very much broader than the occipital, which is 

 very small. Three shields on a line from the nasal to the 

 azygos praefrontal ; five supraoculars. Ear-opening distinct, 

 not larger than the nostril. Dorsal plates in 16 longitu- 

 dinal and 105 transverse series; 12 of these longitudinal 

 series keeled (the keels forming unbroken straight lines), the 

 other four series smooth ; the outer series partially covered 

 by the lateral fold. Ventrals in 10 longitudinal series, smooth. 

 No rudiments of limbs externally. Tail thrice as long as 

 head and body, upper- and lower caudal scales strongly 

 keeled, the keels forming unbroken straight lines. 



Brown above, with a darker lateral band, this lateral 

 band is continued on the tail and separated from the 

 brown dorsal part by a light coloured demarcatian line. 

 On the interparietal a small blue spot, indicating the situa- 

 tion of the parietal-eye. On the beginning of the back 

 irregular transverse series of bluish, black-edged spots. 

 Lips and lower parts pale yellowish, a dark line below 

 the eye, continuing on the lower labials and the gular 

 region; a similar dark line below the corner of the mouth, 

 and one below the ear-opening; the continuation of these 

 stripes is a dark line, running on either side of the belly 

 on to the vent. 



Notes from the Leyden Museum, Vol. XXV. 



