XII, D, 6 Taylor: Snakes and Lizards of Negros 379 



the fourth labial enters the orbit, while most of those from 

 Mindoro have the fifth entering the orbit. The character 

 is not constant. Scale rows vary between 24 and 30. The sole 

 specimen having 24 rows is from Isabela. Most of those from 

 Canlaon have 28 scale rows. A single specimen taken on Can- 

 laon, No. 397, varies markedly, and were the characters constant 

 would represent a new species. The auricular opening is larger, 

 the foreleg reaches the ear, while in other specimens it fails to 

 reach the ear by nearly half its length ; the fourth and fifth labials 

 are below the eye, the hind leg is longer and thicker and is 

 contained in the distance from axilla to groin 2.7 times. In all 

 other specimens the hind leg is always contained more than three 

 times in this distance. There are two well-defined light lines 

 running from above the eye to some distance on the tail; from 

 the ear to the hind leg the stripe is at least two scales wide. 

 There are 30 rows of scales around the body. 



Tropidophorus gxayi Gunther. 



Common along the small mountain brooks near Isabela. Al- 

 ways found in the vicinity of water, usually under partly sub- 

 merged stones or logs. A number of specimens in the collection. 



Dibamus argenteus Taylor.** 



Two specimens of what appear to be this species have been 

 taken : one was found on Mount Canlaon ; the other, near Isabela. 

 Both differ from the tjT)e in having the color dark purple with 

 silver blotches and in having seven instead of five scales border- 

 ing the interparietal. The eye is scarcely distinguishable ; there 

 are two instead of one postocular. 



'In the original drawing of this species, This Journal, Sec. D (1915), 

 10, 89, Plate I, fig. 11, the interparietal is shown bordered by three scales. 

 This is an error; five is the correct number. In the description, page 

 107, it is stated: "2 enlarged labials on each side extending farther back 

 than the rostral;" this should read "2 enlarged lower labials, one on either 

 side of the jaw extending farther back than the rostral." 



