122 REPTILES. 



occiput to the tip of tail, each occupying oue scale and two halves ; 

 belly and outer row of scales uniform whitish. Length of cleft 

 of mouth W; length of tail 34/'; total length 14£". 



4. Gonyosoma, Wagl. 



Dryadidce with smooth teeth, equal in length. Head with 

 flat crown and a much-elongated muzzle ; one anterior and two 

 posterior ocular shields ; two nasals ; body very long, com- 

 pressed, much higher than broad ; belly flat ; ventral plates an- 

 gularly keeled and recurved on the sides ; tail long. Scales 

 moderate, lanceolate, along the back less elongate than on the 

 sides. 



Gonyosoma, Wagl. Nat. Syst. der Amph. p. 184 ; Dum. fy Bibr. 

 vii. p. 213. Herpetodryas, sp., Schlegel, Cantor, &c. Tyria, 

 sp., Fitzivger. Coluber, sp., auct. prior. 



]. Gonyosoma oxycephalum. 



Coluber oxycephalus, Reinw. ; Boie, Isis, 1827, p. 537. Tyria 

 oxycephala, Fitz. Neue Classif. p. 60. ? Coluber cserulescens, 

 Linn. Mus. Ad. Fried, t. 20. f. 2; Daudin, Kept. vi. p. 320; 

 Shaw, Gen. Zool. hi. p. 514 ; (Merr. Tent. p. 112. Natrix cajru- 

 lescens= Dryophylax viridissimus). Coluber subcyaneus, Lacep. 

 Quadr. Ovip. ii. p. 239. Gonyosoma viride, Wagl. Icon. t. 9, 

 and Nat. Syst. p. 185. Herpetodryas oxvcephalus, Sckleg. Ess. 

 t. 7- f. 8-10, and Abbildcj. t. 44. f. 1-9 (Java) ; Cantor, Cutal. of 

 Malayan Rept. p. 80. Gonyosoma oxycephalum, Dum. fy Bibr. 

 vii. p. 213. 



Scales in twenty-three to twenty-five rows ; loreal shield very- 

 slender, elongate. Head with a dark streak above the lips 

 through the eye on each side of the neck. 



Var. A. Above green (in spirits blue), beneath yellowish. 



a. Adult. Java. From the Leyden Museum. 

 /;, c. Adult and half-grown. Java? From Mr. Argent's Col- 

 lection. 

 (I. Adult. Borneo. Presented by Sir James Brooke. 



e. Adult. Borneo. Presented by Captain Sir E. Belcher. 



f. Adult. Philippine Islands. From Mr. Cuming's Collection. 



g. Young : injured. Philippine Islands. From Mr. Cuming's 



Collection. (Posterior frontals divided into two.) 

 //. Adult : rather discoloured. Singapore. Presented by General 

 Hardwicke. 



