128 iGTTANID^. 



From snout to vent .... 83 millim. 



Tail 160 „ 



Fore limb 40 „ 



Hind limb 70 „ 



Paraguay. 



19. CHALARODON. 



Chalarodon, Peters, Mon. Berl. Ac. 1854, p. 616, mid Reise n. 

 Mossamb. iii. p. 33. 



Tympanum distinct. Body depressed ; a dorsal crest ; dorsal 

 scales small. Upper head-scales slightly enlarged ; occipital large. 

 A transverse gular fold. Digits denticulated laterally, with sharply- 

 keeled lamellae inferiorly. No femoral pores. Tail long, round. 

 Lateral teeth tricuspid ; pterygoid teeth. No sternal fontanelle. 

 Abdominal ribs. 



Madagascar. 



1. Chalarodon madagascariensis. 



Chalarodon madagascariensis, Peters, 11. ec., Mossamb, p. 34, pi vi. 

 fig. 3. 



Head moderately large, short, rounded, once and one third as 

 long as broad; canthus rostralis and supraciliary edge angular; 

 nostril pierced above the canthus rostralis, nearer the end of the 

 snout than the orbit ; tympanum vertically oval, as large as the 

 eye-opening. Ux^per head-scales uni- or tricarinate, smaller on the 

 supraocular region ; occipital large and rouud ; a series of large 

 infraorbitals ; eight or nine upper labials. Gular fold strong. 

 Scales on the body small, subimbricate, keeled, largest on the belly, 

 smallest on the flanks ; a series of enlarged scales, indication of a 

 dorsal crest, along the nape and back. The adpressed hind limb 

 reaches the nostril ; digits long and slender, claws long, falciform. 

 Tail roundish, not quite twice as long as head and body, covered 

 with small, equal, keeled scales. Pinkish grey above, with darker 

 angular transverse bands on the back, separated by round whitish 

 spots ; a large black spot on the occipital ; limbs with dark cross 

 bands ; a white, black-edged band on the posterior side of the thigh; 

 lower surfaces whitish. 



The unique specimen in the collection having lost a portion of 

 the tail, the following dimensions are taken from Peters's descrip- 

 tion : — 



Total length 142 millim. 



Head 14 



Width of head 9-5 „ 



Body 36 „ 



Fore limb 25 



Hind limb 43 



Tail 92 



J) 



11 



11 



South-western coast of Madagascar. 



I 



of the types.) 



a. Yg. St. Augustiu's Bay. Prof. Peters [P.]. (One 



