Tachydr'nniis. 



143 



series, obtusely pointed, sti-oii<jly keeled and ishortly niuc-ronate. 33 

 to 38 plates and scales round the middle of the l)ody. Preanal plate 

 moderately large, sometimes not In-oader than long, smooth or feebly 

 bicariuate, rarely longitudinally bisected,* with smaller keeled plates 

 in front and on the sides. 



Upper surface of limbs with rhombic keeled scales and granules. 

 One or two femoral pores on each side.f 24 to 29 lamellar scales 

 under the fourth toe. 



Caudal scales strongly keeled and shortly mucronate, the keels 

 forming four very strong ridges on the upper surface of the basal 

 part ; the whorls nearly equal in length, the fourth or fifth containing 

 14 to 18 scales. 



Brownish olive alcove, sometimes with darker spots which may form 

 lines along the keels of the dorsal plates ; often a yellowish or greenish 

 white dorsolateral streak, starting from the superciliary edge ; a dark 

 streak from the nostril to the eye and a dark band on the temple and. 

 side of neck, often continued on the body, where it may be spotted 

 with greenish white ; a light streak from the lower eyelid, through 

 the lower part of the ear-opeumg, to the shoulder, sometimes continued 

 on the side of the body. A black streak on the hinder side of the 

 thigh. Lower parts yellowish or greenish white. 



Measurements (in millimetres) : 



From end of snout to vent 



fore limb 

 Length of head . . . 

 Width of head . 

 Depth of head . 

 Fore limb .... 

 Hind limb 



Foot 



Tail 



1. 

 41 

 16 

 10 

 6 

 5 



14 

 20 

 11 

 87 



45 



17 



12 



7 



6 



15 

 22 

 12 



44 



17 



10 



6 



5 



15 

 21 

 10 



■i. 

 50 

 21 

 13 

 8 

 6 



18 

 26 

 15 



o. 



45 



18 



11 



7 



6 



16 

 23 

 13 



6. 



52 

 19 

 12 

 7 

 6 

 16 

 23 

 13 



— 122 165 138 140 



1. 9 , type, Taiwanfoo. 2. J , type, C. Formosa. 3. $ , type, C. 

 Formosa. 4. (^ , Taipeh, co-type of T. stejnegeri. 5. (^ , Punkiho. 

 6. § , Kanshirei. 



* In one of the types from C. Formosa. — Two keeled jjlates in 3 specimens 

 and two smooth plates in 1 of T. stejnegeri, two keeled plates in 4 specimens 

 and two smooth plates in 2 of T. formosanus (otit of 178 specimens) according 

 to Van Denbnrgh. 



t Van Denburgh found two pores on one side in one specimen referred by him 

 to T. stejnegeri ; the sj)ecimens with a single pore are (with 9 exceptions out of 

 284 specimens) regarded as typical T. I'onnosaiius. 



