SNAKES OF MADAGASCAR. 373 



1. POLYODONTOPHIS RHODOGASTER. 



Ilerpetodryas rhodogaster Schleg. Phys. Serp. ii. p. 193. 

 Polyodontophis rhodogaster Bouleng. Cat. Sn. i. p. 182. 

 Madagascar. 



2. POLYODONTOPHIS TORQUATUS. 



Coronella torquata Bouleng. Ann. &, Mag. N. H. (6) 1888, 

 p. 103, pi. V. fig. 3. 



Polyodontophis torquatus Bouleng. Cat. Sn. i. p. 183. 

 Madagascar. 



3. Polyodontophis mayottensis. 



Ablabes rhodogaster, vai-. mayottensis Peters, Mon. Berl. Ac. 

 1873, p. 793. 



Polyodonto})his mayottensis Bouleng. Cat. Sn. i. p. 183. 

 Mayotta., Comoro Islands. 



2. Tropidonotus. 



Kuhl, Bull. So. Nat. ii. 1824, p. 81 ; Bouleng. Cat. Sn. i. 

 p. 192. 



Liopholidophis Mocquard, Bull. Mus. Paris, 1904, p. 302. 



Synopsis of the Species. 



I. Scales in 17 rows. 



Rostral nearly as broad as deep ; eye rather small ; subcaiidals 



72-152 T. sexlineattts. 



Rostral much broader than deep ; e^'e rather large ; subcaudals 



97-160 „ T. doHchorercus. 



Rostral twice as broad as deep ; subcaudals 221 T. grandidieri. 



II. Scales in 19 rows; subcaudals 68-104. 



Frontal once and a half as long as broad T. sUuivpffii. 



Frontal once and two-thirds to twice as long as broad T. lateralis. 



1. Tropidonotus sexlineatus. 



Dromicus sexlineatus Giinth. Ann. & Mag. N. H. (5) ix. 1882, 

 p. 264, fig. 



'fropidonotas sexlineatus Bouleng. t. c. p. 246. 

 Madagascar. 



2. Tropidonotus dolichocercus. 



Dromicus dolicocercus Peracca, Boll. Mus. Torin. vii. 1892, 

 no. 112, pi. i. fig. i. 



Tropidonotus dolichocercus Bouleng. t. c. p. 246. 

 Madagascar. 



3. Tropidonotus grandidieri. 



Liopholidophis grandidieri Mocqu.ard, Bull. Mus. Paris, 1904, 

 p. 304. 



Madagascar. 



