140 



broader than the suture between the frontal and the inter- 

 parietal. It is separated from the frontal by two praefrontals. 

 Interparietal twice as broad as the parietals, 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 i6 longitudinal 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 smooth, in 10 longitudinal 

 series. No external limbs. Tail thrice as long as head and 



Fig. 62. Ophisaurus biittikoferi Lidth. a. Anal opening. 



body, upper and lower caudal scales strongly keeled, the 

 keels forming straight lines. 



Brown above; a dark lateral band edged above with a light 

 band; this lateral band is continued on the tail. A small blue 

 spot on the interparietal, indicating the situation of the parietal- 

 eye. On the anterior part of the back irregular transverse 

 series of bluish spots, anteriorly edged with black. Lips and 

 lower parts pale yellowish; five oblique dark hnes on the 

 sides of the head, running across the lips, the first behind the 

 nostril, the second below the eye, the third at the corner of 

 the mouth, the fourth below the ear-opening and the fifth at 

 the nape; the latter is continued on each side of the belly. 

 Length of head and body 125 mm.; tail 375 mm.. 



Type-specimen examined in the Leyden Museum. 



Habitat: Borneo (Mt. Liang Kubung!). 



