xxii 
PLATES. 
6. Head (upper Hew) ) « 
6a. Head (side view) } of tlie 
G-reen Tree Snake —Dendrophis punctulata. 
7. Head (upper view) ) r> , 
7 a. Head (side view) j of tho 
Brown Tree Snake —Dipsas fusca. 
8. Head (upper view) ) * ., 
8a. Head (side view) J 0 e 
Eresh-water Snake —Tropidonotus picturatus. 
of 
9. Head (upper view) 
9a. Head and portion of body 
Preiss’ Blind Snake —Typlilops preissi. 
10. Head (side view) ) 
13. Head (upper view) > of 
13a. Tail ) 
Schmidt’s Blind Snake —Typlilops bicolor. 
11. Head (side view) of 
Ruppell’s Blind Snake —Typlilops ruppelli. 
12. Head (upper view) 
12a. Head (side view) 
126. Tail 
Gray’s Blind Snake —Typlilops nigrescens. 
PLATE VI. 
^TBisronycoTJS. 
1. Skull of 
American Rattlesnake — Crotolus durissus. 
2. Skull of 
Australian Black Snake — Pseudecliis porphyriacus. 
3. Head of 
West Australian Crowned Snake — Hoplocephalus coronatus. 
4. Head (upper view) 7 , ,, 
4a. Head (side view) ) 
Black-backed Snake — Hoplocephalus nigrescens. 
5. Head (upper view) \ f ,, 
5a. Head (side view) ) 
Temporal Desert Snake —Hoplocephalus temporalis. 
6. Head (upper Hew) ) 
ба. Head (lower Hew) > of the 
бб. Head (side view) ) 
Broad-headed Snake —Hoplocephalus variegatus. 
