12. LIOHKTKRODON. 269 



scarcely distinct from neck ; snout pointed, projecting ; rostral 

 large, subtrihedral ; eye large, with round pni)il. l:iody cylindrical; 

 scales smooth, with apical pits, in 21 ov 'J'.i rows; ventruls rounded 

 or obtusely augulate laterally. Tail moderate; subcaudals all or 

 part in two rows. Uypapophyses developed throughout the verte- 

 bral column. 

 Madagascar. 



1. Lioheterodon madagascariensis. 



Ileterodou madagascariensis, Du?n. ».y Uihr. vii. p. 776, pi. Ixix. 



(185-1); Bueft(/. Ah/i. Senck. Ges. xi. 1877, p. 5, and xii. 1881, 



p. 442. 

 Anomalodon madagascariensis, Jan, Arch. Zool. Anut. P/n/s. ii. 1863, 



p. 227, and Icon. Gen. 10, pi. vi. lig. 1 (1805). 



Portion of rostral visible from above as long as or a little shorter 

 than its distance from the frontal ; internasals as long as the prse- 

 frontals ; frontal nearly once and a half as long as broad, as long as 

 its distance from the end of the snout or a little shorter, as long as 

 the iiarietals ; loreal longer than deep ; one pra}- and three or four 

 postoculars ; temporals small, scale-like ; eight upper labials, fourth 

 and fifth entering the eye ; five lower labials in contact Avith the 

 anterior chin-shields, wdiicli are a little longer than the posterior. 

 Scales in 23 rows. Ventrals 2UG-21G ; anal entire; subcaudals 

 G2-73, the anterior single. Erown or black above, with pale brown 

 or yellowish spots ; sides yellowish, with two alternating series of 

 black spots, the upper of w'hich may be conHuent into a zigzag 

 band ; upper labials yellowish, M'ith black sutures ; lower parts 

 yellowish, with small black spots. 



Total length 1020 millim. ; tail 170. 



Madagascar. 



a. 2 {V. 206; 0. 62). Imerina. Kev. IJ. ]5aron [C.]. 



b. $ (V. 216; C. 67). Madagascar. Kev. II. Karon X'.]. 



c. d. $ (V. 207 ; C. 64) Madagascar. 

 .S:yg.(V.210; C. 70). 



2. Lioheterodon modestus. (Plate XVIII. fig. 1.) 



Ileterodou madagascariensis, Giinth. Cat. p. 84 (1858). 



modestus, Giinth. Ann. ^- Miuj. X //. (3) xii. 1863, p. 356. 



Anomalodou madagascariensis, Steindachn. Nouftra, liept. p. 90 

 (1867). 



Closely allied to the preceding, but scales in 21 rows, ventrals 

 159-170, and subcaudals 54-62, all in i)airs, or a few of the anterior 

 single. Pale brown above, uniform or with two or three more or 

 less distinct darker stripes; uniform yellowish below. 



Total length 920 millim. ; tail 20o! 



Madagascar. 



