1/8 REPTILES. 



as broad ; each shield of the two other ones much smaller than 

 one posterior frontal. Greyish brown, marbled with brown ; on 

 the back and on the sides more or less regular dark brown cross 

 bands, extending on the ventral shields ; belly irregularly spotted 

 with black. 



a. Adult. S. America. From Mr. Mather's Collection. 



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



c. Many specimens. Berbice. 



d. Young, Berbice. Presented by Lady Essex. 



e,f. Adult. Demerara. From Mr. Snellgrove's Collection. 

 g. Adult. Demerara. From Mr. Snellgrove's Collection. 

 h. Half-grown. Demerara. From Mr. Snellgrove's Collection. 

 i. Half-grown. Demerara. Presented by W. Raddon, Esq. 

 Ic, I. Adult and young. Venezuela. From Mr. Dyson's Col- 

 lection. 

 m~o. Adult. Mexico. From Mr. Hugo Finck's Collection. 

 p. Adult. West Indies. Presented by Miss Saul. 

 q. Adult. West Indies. Presented by Miss Saul. 

 r. Adult : injured. West Indies. Presented by Miss Saul. 

 s. Adult : head injured. America. Presented by Mr. Tennant. 

 t. Adult. America. 



u-w. Adult. America. From Mr. Argent's Collection. 

 X. Adult : head injured. America. 



2. Leptognathus mikanii. 



Dipsas mikanii {Mus. Vienn.), Schleg. Ess. ii. p. 277. Anho- 

 lodon mikanii, Dum. ^ Bibr. p. 1165. 



Body and tail rather short, not much compressed ; loreal shield 

 generally united with ante- ocular ; sometimes a rudimentary 

 ocular above and beneath the loreal ; upper labials seven or eight ; 

 first pair of lower labials forming a suture together ; two pairs 

 of chin-shields behind, the first of which is once and a half as long 

 as broad; each shield of both pairs as large as one posterior 

 frontal. Greyish brown, punctulated with brown; with dark 

 brown cross bands, not extending on the belly; belly with a 

 punctated line on each side. 



a. Adult : male. Pernambuco. Presented by J. P. G. Smith, Esq. 



b. Adult. Pernambuco. From the Collection of the Zoological 



Society. 



c. Young. Pernambuco. Presented by J. P. G. Smith, Esq. 



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



e. Half-grown. Brazil. From M. Parzudaki's Collection. 



Description. — In habit similar to L. nebulatus, but rather 

 shorter ; head more depressed, with rather rounded crown and 



