THE LIZARDS OF THE GENUS TACHYDROMUS. 215 



4 times in length to vent ; snout pointed, with strong canthus and nearly vertical 

 loreal region, as long as the postocular part of the head. Pileus if to 2 times as 

 long as broad. Neck as broad as the head or a little narrower. The hind limb 

 reaches the elbow ; foot as long as the head or slightly longer. 



Nostril pierced between three shields. Rostral not entering the nostril ; nasals 

 forming a very short suture behind the rostral ; frontonasal broader than long, as 

 broad as the internarial space ; a small shield often present between the prefrontals ; l 

 frontal as long as its distance from the end of the snout, ij to if times as long 

 as broad, of nearly equal width throughout ; parietals if times as long as broad ; 

 interparietal i^ to 2 times as long as broad ; occipital small, much shorter than the 

 interparietal. 4 supraoculars, first very small, second and third equal, fourth small 

 but larger than the first and rarely in contact with the frontoparietal ; 2 4 or 5 super- 

 ciliaries, first longest, separated from the supraoculars by a complete series of 

 granules. Nasal forming a suture with the anterior loreal, above the small postnasal ; 

 anterior loreal shorter than second ; 3 to 5 upper labials 3 anterior to the subocular, 

 which is narrowed beneath than above. Temporal scales small, keeled ; 3 enlarged 

 upper temporals ; tympanic shield present. 



4 pairs of chin-shields, the 3 anterior meeting in the middle ; 24 to 26 gular 

 scales between the symphysis of the chin-shields and the median collar-plate, anterior 

 granular, smooth, posterior enlarged, imbricate, pointed, and keeled, merging gradu- 

 ally into the collar, which is composed of 10 to 12 pointed, more or less distinctly 

 keeled plates. 



Dorsal plates rounded behind, in 8 longitudinal series, those of the two median 

 series smaller ; sides with a more or less distinct upper and 3 or 4 lower series of 

 keeled scales and a median granular area. Ventral plates in 8 longitudinal and 27 

 to 29 transverse series, the outer pointed and keeled, the others rounded or truncate 

 behind and smooth. 36 to 38 plates and scales round the middle of the body. 

 Prseanal plate large, smooth, bordered by one semicircle of small plates. 



Upper surface of limbs with rhombic keeled scales, much smaller than the dor- 

 sals. A single femoral pore on each side. Subdigital lamellae mostly divided, 19 to 

 22 under the fourth toe. 



Caudal scales strongly keeled and shortly mucronate, equal or in somewhat longer 

 and shorter whorls alternately, the fourth or fifth of which contains 18 to 20 scales. 



Olive above, with a more or less distinct light dorso-lateral streak and a dark olive 

 lateral band ; a white, black-edged lateral streak from the loreal region through the 

 lower part of the ear-opening to the base of the hind limb ; a dark streak along each 

 side of the tail. Lower parts yellowish or greenish white. 



Measurements, in millimetres. 1. 2. 3. 



From end of snout to vent . . . . . . .. 45 45 46 



„ „ ,, ,, ,, fore limb . . . . . . .. 16 17 16 



Head . . . . . . ( . . . . . . n n n 



1 Specimens from Seoul and Kiu Kiang. * On one side in the specimen from Kiu Kiang. 



i 4 on one side and 5 on the other in the type, 3 on one side and 4 on the other in the specimen from Kiu Kiang. 



