KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 55- N:0 4. 7 



the ocular region to the tympanum. A large blackish brown, rhomboidal spöt on 

 the upper surface of the neck extending forward on the sides of the nnchal crest 

 and with the lateral angles in connection with a dark streak downwards in the fold 

 in front of the shoulder. Three broad, dark brown patches across the back, a fourth 

 similar across the root of the tail, and a series of others across the remainder of the 

 tail. The adpressed hind limb reaches the eye. 



Distance from snout to vent 81 mm. 



» ■» vent to tip of tail 89 » 



Width of head 20 » 



Length of hind limb 61 » 



A single specimen from Bång Hue Pong, collected the 7th of May 1914. The 

 locality where this interesting lizard was found is sitnated on the slopes of the Loi 

 Koon Tan where the vegetation was of the dry for est type. 



Another lizard from Koon Tan collected in Sept. 1914 is very similar, but 

 differs in the following details. The superciliary edge less projecting behind. The 

 triangulär postorbital spine is smaller an shorter. The spines on the nape smaller. 

 The nuchal crest composed of 7 almost subequal scales with addition to a small one 

 at either end. To the transverse nuchal crest corresponds a group of spines on either 

 side (not connected with the real nuchal crest), the central one of which is largest. 

 All the lower labials are keeled. The transverse gular fold only slightly indicated 

 in the middle. The lateral series of the dorsal crest less strongly developed, but the 

 tricarinate appearance of the crest is nevertheless plainly visible especially in front. 

 Fourth finger very slightly longer than third. On the whole the difference is confined 

 to the less pronounced spinousness of the specimen from Koon Tan. The colour- 

 pattern as well as the general arrangement of the scales agrees with the corresponding 

 ones of the lizard from Bång Hue Pong, and it is thus probably only a product of 

 individual variation. 



Distance from snout to vent 73,5 mm. 



» » vent to tip of tail 87,5 » 



The locality where this specimen was collected lies near the summit of the 

 Loi Koon Tan at an altitude of 4400 feet where the vegetation chiefly consisted of 

 great pines. 



12. Physignathus mentager Gthr. 



1 fine specimen from Eastern Siarn, 1912. 



This species does not appear to extend to the Malay Peninsula. The other 

 members of the genus are known from Cochinchina, Timor Laut and Australia. 



