8 SNVED. ZOOL. KXP. TO SIAM. EINAR LÖNNBERG. 2. LIZARDS. 



13. Liolepis bellii Gray. 



Numerous specimens, Siarn, 1911. 1 specimen Hat Sanuk, Siamese Malacoa, 

 Febr. 1915. 



As is known this lizard is at least partly herbivorous, and the large intestine is 

 usually filled with vegetable matter, but there is no real csecum. The small intestine 

 opens into the abruptly enlarged large intestine, and the end of the former projects 

 somewhat into the lumen of the latter so as to form a valvida ileocolica, but other- 

 wise there are hardly any structural adaptations to the herbivorous diet to be seen. 



>These lizards live in open sandy places and run very rapidly. They appear 

 only during the hot time of the day. When running they raise the anterior part of 

 the body and expand the sides by means of their elongated ribs. They are very shy 

 and take soon their refuge to holes in the ground. These lizards are eaten by the 

 Siamese. ■» (G.) 



14. Varanus nebulosus Gray. 



3 specimens from Doi Par Sakeng near Muang Fång, North Western Siarn, resp. 



„ :. 15 t and 23 t 1914. 



»Mostly seen in trees and taking their refuge in hollow logs.> (G.) 



The largest of the above mentioned specimens measures about 105 cm. in total 



length, or 10 cm. more than recorded in the Catalogue of Lizards B. M. 



15? Varanus dumerilii S. Mull., (or V. nebulosus Gray.) 



A large Varanus measuring 141 cm. in total length and collected between Hue 

 Sai and Ko Lak in January 1915 is suspected to belong to this species on account 

 of its having the abdominal scales slightly keeled. In some other respects it differs, 

 however, from the description and agrees better with V. nebulosus. So f. i. the snout 

 is not depressed at the end but rather convex as in nebulosus. On the other hand 

 the snout is longer than half the length of the head as in dumerilii, The supraocular 

 scales are transversely enlarged, so that 6—7 of them are more than twice as broad 

 as long. The scales on the anterior uppcr portion of the neck have a flat surface 

 and are subcircular, but basally thickened so that the upper neck thus gets a tubercular 

 appearance. These scales are somewhat largei (about 4 mm.) than those of the back. 

 which are oval (about 3 X 4 mm.) and obtusely keeled. Tail with a doubly toothed. 

 sharply serrated crest. 



Of the fcwo species mentioned above only comparatively small specimens have 

 iiillv been deeoribed. The specimen of 1'. nebulosus mentioned above appears to be 

 the Largest known, as it measures 105 em., and of V. dumerilii the largest known 

 specimen appears to have been 37 cm. from snout to vent, while the corresponding 

 measurement of the present specimen is more than (K) cm. It is thus difficult to 





