DUTCH BORNEO-EXPEDITION. 



195 



Raoeu with very small suprauasals, the supranasal being 

 a minute elongated scale, situated in the posterior upper 

 corner of the nasal. Moreover this specimen has a row of 

 three somewhat enlarged colourless scales at the heel 

 and the outer side of the foot, the inner of these scales 

 at the heel as large as three scales under the middle of 

 the foot. 



30. Lygosoma vittatum Edeling. 

 Three specimens from Sintang. 



31. Lygosoma Nieuwenhuisii, nov. spec. 



Section Keneuxia. Habit lacertiform. The distance between 

 the end of the snout and the fore limb is contained once 

 and a fourth in the distance between axilla and groin. 

 Snout rather elongate, pointed, somewhat depressed. Lower 

 eyelid scaly. Nostral pierced in a single nasal, a small 

 supranasal not in contact with its fellow. (In our single 

 specimen the supranasal of the left side, though having 

 only half the depth of the nasal, extends over the whole 

 breadth of the nasal and is in contact with the nostril ; 

 the supranasal on the right side being a very small elongate 

 shield, situated in the posterior upper half of the nasal 

 shield). Frontonasal as long as broad, in contact with the 

 rostral and with the frontal, the suture with the frontal 

 very narrow; the frontal shorter than frontoparietal and 

 parietals together, in contact with the first and second 

 supraoculars; five supraoculars, second largest, fifth very 

 small; nine supraciliaries, first largest, the others not much 

 differing in length. Frontoparietals and interparietal distinct, 

 the latter larger than the former, the parietals meeting 

 behind the interparietal, each of them bordered by one 

 nuchal and two temporals. One pair ol nuchals. Fifth 

 supralabial below the eye, the height of this supralabial 

 nearly twice the height of the fourth supralabial. Ear-opening 

 very small, with one small projecting pointed lobule on 

 its anterior border. 24 smooth scales around the middle 

 of the body, dorsal ones largest, especially the two median 

 series. Scales on the praeanal region somewhat enlarged. 



Notes from the Leyden Museum, Vol. XXV. 



