Reptiles and Batrachians from Madagascar. 103 



Chamceleon gastrotcenia. (PI. V. fig. 2.) 



Casque feebly raised and rounded posteriorly, swollen, 

 without crests ; the distance between the commissm-e of the 

 mouth and the extremity of the casque equals the distance 

 between the former point and the nostril ; snout pointed, 

 without rostral appendage ; canthus rostralis obtuse ; no occi- 

 pital lobes. Body coarsely granular ; a dorsal crest of conical 

 tubercles ; no gular or ventral crest. No tarsal process. 

 Tail a little longer than head and body. Upper half of body 

 slaty grey, lower dark purple, the two colours separated by an 

 ill-defined lighter band, along which are three small, round, 

 whitish spots ; inner surface of limbs pure white ; a very 

 broad white band, divided into two by a median grey band, 

 extends from the chin to near the end of the tail. 



ruillim. 



Total length 118 



From end of snout to extremity of 



mandible 16 



From end of snout to extremity of casque 20 



Width of head ." 10 



Body 40 



Tibia 9 



Tail 62 



Two specimens, male and halfgrown [R. Baron). 



The same collection contained several specimens of Gha~ 

 wceleon Campania Grand., which enable me to supplement 

 Boettger's excellent description with the statement that the 

 male develops no secondary sexual characters. 



Coronella torquata. (PI, V. fig. 3.) 



Snout short, obtuse ; eye small. Frontal once and two 

 thirds as long as broad, considerably longer than its distance 

 from the end of the snout ; prgefrontals longer than the inter- 

 nasals ; rostral moderate, scarcely visible from above ; loreal 

 as deep as long ; one prte- and two postoculars ; a single 

 anterior temporal ; eight upper labials, fourth and fifth enter- 

 ing the orbit ; five lower labials on each side in contact with 

 the chin-shields, of which the posterior pair is larger than the 

 anterior. Scales in 17 longitudinal series, without apical 

 pores. Ventrals 186 ; subcaudals 67. Pale brown, vertebral 

 zone (seven scales wide) darker ; a series of small black spots 

 forms a vertebral line, and another runs on each side along 

 the third series of scales (counting from the ventrals) ; upper 

 surface of bead mottled with blackish ; a white streak along 



8* 



