202 ME. G-. A. BOULElSrGER ON THE 



bears some resemblance to the var. tiliguerta. The two female specimens kindly 

 entrusted to me by Dr. Werner show the following size and scaling : — 



]. 2. 3. 4. 5. 6. 7. 



Oxia ? 65 68 29 11 28 22-21 32 



Platia „ 62 71 28 9 28 22 30 



Head rather strongly depressed, its depth equalling the distance between the centre 

 of the eye and the anterior border of the eye, its length once and a half or once and 

 two-thirds its width ; snout pointed, as long as the postocular part of the head. 



The hind limb reaches the shoulder ; foot once and one-third or once and two-fifths 

 the length of the head. Tail nearly twice as long as head and body. 



Rostral not entering the nostril; postnasal single; frontal nearly as long as its 

 distance from the end of the snout ; series of granules between the supraciliaries and 

 the supraoculars incomplete, the first, or first and second supraciliaries in contact with 

 the second supraocular ; parietals once and one third as long as broad, in contact with 

 the upper postocular ; occipital a little shorter and a little broader than the inter- 

 parietal; temporal scales granular, with a moderately large masseteric disk ; tympanic 

 shield distinct ; supratemporal shields small (3 to 6) ; four anterior upper labials in 

 the specimen from Oxia, five in that from Platia. 

 Collar with even edge ; gular fold distinct, 



Doi'sal scales very small, roundish, convex, faintly keeled granules ; 3 or 4 

 correspond to one ventral plate, 42 or 43 to the length of the head. Praeanal plate 

 rather small, with 2 or 3 semicircles of small plates ; in the specimen from Platia it is 

 followed by a series of granular scales, as sometimes occurs in the var. serpa (see 

 PI. XXL fig. 5 h). Scales on upper surface of tibia feebly keeled, a little smaller than 

 dorsals. 



Upper caudal scales moderately keeled, truncate, very diagonal to the keel, 30 or 31 

 in the fourth whorl behind the postanal granules. 



Greyish olive above, uniform or with very faint darker reticidation, white beneath, 

 ■outer ventral shields bluish grey ; a blue, black-edged spot may be present above 

 the axil. 



Measm'ements (in millimetres) : — 



From end of snout to vent ...,., 65 



„ „ „ fore limb 23 



Length of head 15 



Width of head 9 



Depth of head 7 



Fore limb 23 



Hind limb . 39 



Foot 20 



Tail 128 



The specimen from Platia is represented on PL XXL fig. 6. 



