38 AUSTRALIAN SNAKES. 



Green Rock Snake. 



Liasis olivaceus, Gray. 



S. G9-75, V. 349-361, A.l, S.C. 100-102. 



North Australia ; lengtl),jG feet 3 inches. 



Diamond Snake. 



Python spilotes, Lacepede. 

 PhUe 2. 



Carpet Snake. 



Python spilotes, variety variegata, Gray. 



Plate 3. 



S. 45-51, Y. 251-304., A.l or 2, S.C. 63-92 



Krefft considered that these two snakes were merely 

 varieties one of the other, and farther researches have 

 proved the accuracy of his surmise. Except in color 

 and distribution they do not differ, and occasionally 

 individuals are obtained which cannot be assigned to 

 either form, being colored partly like one and partly 

 like the other, formally the Diamond Snake is black 

 with a yellow spot in the centre of each scale, and with 

 diamond-shaped clusters at fairly regular intervals. 

 It attains a length of 8 feet. The Carpet Snake, which 



