1/2 REPTILES. 



6. DiPSAS IRREGULARIS. 



Unregelmaessige Natter, Merr. Beitr. pi. 4. Hurria irregu- 

 laris, Merr. Tent. p. 93. Hurria pseudo-boiga, Daud. Rept. v. 

 p. 277. Dipsas irregularis, Boie, Isis, 1827, p. 549 ; Wagl. Amph. 

 p. 181 ; Schleg. Ess. pi. 11. f. 12, \3. Triglyphodon irregularis, 

 Du7n. Sf' Bibr. vii. p. 1072. 



Scales in twenty-one or twenty-three rows ; one anterior ocular ; 

 fifteen to twenty temporal shields. Olive, grey or brown, some- 

 times with more or less distinct darker cross bands, sometimes 

 only varied with black ; one black streak from the back edge of 

 eye to the angle of mouth. 



a. Adult: male. Amboyna. From the Leyden Museum. 



b. Adult. Celebes. From the Leyden Museum as D. drapiezii. 



c. Adult. Asia. From Mr. Frank's Collection as D. palhda (?). 



d. Adult : bleached. Asia. Old Collection. 



e. Adult : not good state. Asia. Presented by Captain Sir E. 



Belcher. 

 /. Foetus and eggs. Asia. The foetus exhibits all the subcaudal 

 plates bifid. 



7. Dipsas forsteni. 



Triglyphodon forsteni, Dum. ^ Bibr. vii. p. 1077. 



Scales in twenty-seven or twenty-nine rows ; anal entire. Olive, 

 with darker cross bands, or only varied with black. 



a. Adult: rather discoloured. India. 



b. Half-grown : rather discoloiu-ed. ? From the Haslar 



Collection. 



c. Adult: fine specimen. ? Presented by the Zoological 



Society. 



d. Adult. ? From the Collection of the Zool. Soc. 



8. Dipsas valida. 



Triglyphodon fuscum*, Dum. SfBibr. p. 1101. Dipsas valida, 

 Fischer, Abhandl. aus dem Gebiete der Naturwiss. Hambg. 1856, 

 p. 87. t. 3. f. 4. 



Scales in twenty-three rows ; two anterior oculars ; the hinder 

 edges of the occipital shields forming nearly a right angle ; anal 

 bifid. Quite uniform brown, paler beneath, sometimes on the 

 sides a row of large brown spots. 



a. Adult. Fantee, W. Africa. From the Leyden Museum. 

 h. Adult. Coast of Guinea. 



* This name is preocupied, having been given to an Austrahan 

 species of the genus by Dr. Gray in the year 1842. 



