176 REPTILES. 



2. DlPSADOMORPHUS CEYLONENSIS. 



Scales in nineteen rows ; one loreal. Greyish, minutely punc- 

 tulated with black; a vertebral series of more or less rounded black 

 spots, each emitting an oblique narrow streak towards the sides 

 of belly ; belly freckled with brown, and on each side a series of 

 brown spots. 



a. Adult. Ceylon. From Mr. Cuming's Collection. 



b. Adult. Ceylon. Presented by A. Paul, Esq. 



c. Adult : bad state. Ceylon. Presented by R. Templeton, Esq. 



d. Half-grown. Ceylon. Presented by R. Templeton, Esq. 



e. Half-grown. Ceylon. From Mr. Cuming's Collection. 

 /. Half-grown. Ceylon. From Mr. Cuming's Collection. 

 g. Young. Ceylon. From Mr. Cuming's Collection. 



Closely allied to D. trigonatus, but differs in having a peculiar 

 system of coloration, larger scales in the vertebral row, less 

 imbricate scales, and a much larger eye. Structure of head- 

 shields the same. In the stomach of one specimen I found a 

 young rat. Size the same as of D. trigonatus. 



3. DlPSADOMORPHUS BISCUTATUS. 



Dipsas biscutata, Dum. Sf Bibr. p. 1153. 



Scales in twenty-three rows ; two loreals, one above the other ; 

 three anterior, three posterior oculars. Yellowish brown, with 

 large irregularly lozenge-shaped brown yellow-edged spots, each 

 enclosing a smaller yellow spot. Mexico. 



a. Adult. Central America. From the Haslar Collection. 



6. Rhinobothryum, Wagler. 



Body much compressed and elongated ; head broad, depressed, 

 flat above, triangular, very distinct from neck ; rostral shield far 

 produced backwards between the anterior frontals, so as to some- 

 times reach the posterior ones ; snout rather elongate, truncated 

 in front ; one loreal, one anterior, two posterior oculars ; scales 

 moderate (in nineteen to twenty-one rows), imbricate, lanceolate, 

 those on the back equal, keeled; anal bifid; subcaudals two- 

 rowed. Nostril forming a very large and deep groove between 

 two nasals and the anterior frontal. Hinder maxillary teeth 

 longest, furrowed ; the anterior ones equal in length. South 

 America. 



Rhinobothryum, Wagl. Nat. Syst. der Amph. p. 186; Dum. 

 8f Bibr. vii. p. 1060. Dipsas, sp., Sckleg. Ess. ii. p. 28D. Coluber, 

 gp., Bote, Scopoli. 



