188 REPTILES. 



e. Young. Caraccas. 

 /. Adult. Brazil. Head rather elongate. 



** Head elongate, rather pointed ; hinder angle of the rostral 

 shield acute, reaching far between the frontals. 



g. Adult. Pernambuco. Presented by J. P. G. Smith, Esq. 

 h. Adult. Pernambuco. 



Var. B. Seytale neuwiedii, Dum, ^ Bihr. vii. p. 1001. Scytale 

 coronata, Wied, Ahbildg. pi. . 8fBeitr.-^. 241. Lycodon cloelia, 

 var., Schleg. Ess. p. 116. 



Head and neck dark brown, without collar ; body whitish or 

 pale brown, each scale brown-edged, or brown or black. 



* Head short, rounded in front ; hinder angle of the rostral 

 shield obtuse, not reaching between the frontals. 



i. Adult. South America. From Mr. Cuming's Collection. 

 k. Adult. Caraccas. Above very dark brown. 

 I. Half-grown. Para. From Mr. Stevens's Collection. 

 m. Half-grown. Rio Janeiro. Presented by A. Fry, Esq. Back 

 lead-coloured, sides and belly white. 



** Head elongate, rather pointed ; hinder angle of the rostral 

 shield acute, reaching far between the frontals. 



n. Adult. Pernambuco, Presented by J. P. G. Smith, Esq. 

 0. Adult : bad state. Pernambuco. Presented by J. P. G. Smith, 



Esq. 

 p. Adult. Pernambuco. Presented by J. P. G. Smith, Esq. 

 q. Adult. Above uniform lead-coloured. 

 r. Adult. Trinidad. Rostral plate very thick and swollen. 

 s. Adult. America. Above uniform brown. 

 t. Half-grown. America. Above uniform brown. 



Scytale neuwiedii of Dumeril and Bibron is only a nominal 

 species, as is proved by the specimens in the Museum Collection. 

 Specimens from Pernambuco, which may be regarded as Sc. 

 coronatum or Sc. neuwiedii, show the same peculiarity of the 

 rostral shield. 



3. OxYRHOPUS, Wagler. 



Body rather elongate, sometimes slender and compressed ; tail 

 moderate ; head rather depressed, with flat crow n, and not short, 

 but broad, depressed muzzle, generally not very distinct from 

 neck; eye moderate, pupil elliptical, erect. Shields of head 

 regular, vertical, generally produced behind, and pointed ; one 

 (exceptionally two) anterior, two posterior oculars ; one loreal ; 

 two nasals, nostril between. Scales smooth, rhombic, in nine- 



