LIST OF PLATES. 
Prats I. 
Fig. 1. Hypsirhina indica, Gray, p. 4. Upper and lower views 
of head and anterior part of body. 
la. Upper view of head. x 2. 
18. Side view of head. x2. 
2. Hypsirhina chinensis, Gray, p.8. Upper and lower views 
of head and anterior part of body. 
Side view of head. x14. 
2 b. 
Prats IT. 
Fig. 1. Cerberus australis, Gray, p. 18. 
2. microlepis, Blgr., p. 18. 
Upper and lower views of head and anterior part of body, 
and side view of head. 
Prate III. 
Fig. 1. Geodipsas infralineata, Gthr., p. 32. Upper and side 
views of head and anterior part of body, and lower 
view of middle of body. . 
2. Lycodryas sanctijohannis, Gthr., p. 45. Upper and side 
views of head and anterior part of body. 
3. Dipsadomorphus nigriceps, Gthr., p. 72. Upper view 
of head and anterior part of body, and side view 
of head, 
