44 REPTILES. 



e. Young. South America. From Mr. Mather's Collection. 



ij, 6. Adult : bleached. Central America. 



I, K. Adult. ? West Indies, From Mr. Scrivener's Collection. 



X. Half-grown. ? Antilles. From Mus. Guilding. 



fx. Adult. America. 



V. Adult. America. Presented by the College of Surgeons 



|. Adult. America. 



G. Half-grown : not good state. America. From Mr. Mather's 



Collection. 

 TT. Adult. From the Berlin Museum. 

 p. Adult. America. 



Var. A. "With alternate white and blackish-ash bands or rings. 



y, T. Adult, Brazil. Presented by J. S. Bowerbank, Esq. 



V. Adult. Para. Presented by R. Graham, Esq. 



^. Adult. Bahia. From the Haslar Collection. 



^. Adult. Brazil. Presented by Mrs. Mauger. 



o). Half-grown. Brazil. 



aa. Half-grown : bad state. Brazil. From Mr. Mather. 



bb. Adult. Brazil. 



cc. Half-grown. Brazil. Presented by Sir Charles Lyell. 



N.B, The character of the longer posterior maxillary teeth is 

 not very strongly marked in this species, and in the specimen p 

 all the teeth are evidently equal, 



3. LlOPHIS MERREMII. 



Seha, ii. 36. 4. & 57. 2. Coluber chiametla and C. perlatus, 

 Shaw, Gen. Zool. iii. pp. 440, 480. Coluber merremii, Neuwied, 

 Beitr. u. Ahhildg. zur Naturg. Brasil, p. 368. Lief. 8. pi. 1. f. 1. 

 Coluber doliatus and C. poecilogyrus, Neuwied, I. c. f. 1-3. 

 Coluber alternans, Lichtenstein, Catal. p. 104. Natrix chia- 

 metla et N. forsteri, Spix, Serpentes Brasil. pp. 14 & 16; 

 Wagler, Nat'drl. Syst. der Amphib. p. 188. Coluber bicolor, 

 Reuss, Mus. Sejikenb. ii. 8. i. Coronella merremii, Sckleg. Ess. i. 

 p, 135. ii. p. 58. pi. 2. f. 6-8 ; Dum. S,- Bibr. vii. p. 708. 



Head large behind ; scales black, marked in the centre by a 

 white or yellow spot. — Young with more or less distinct rings, 

 by degrees disappearing with age, in which the individual spe- 

 cimens vary infinitely. 



Adult specimens : — 



A. Scales black, marked in the centre by white or yellow 

 spots. Coluber merremii, Wied. 

 a-e. Demerara. From Mr. Snellgrove's Collection. 



