LIST OF PLATES. 723 
Prate IV. 
Fig. 1. Stenophis guentheri, Blgr., p. 40. 
2. maculatus, Gthr., p. 43. 
3. variabilis, Blgr., p. 43. 
3a. Young. 
4, betsileanus, Gthr., p. 44. 
Upper and side views of head and anterior part of 
body. 
Puate V. 
Fig. 1. Himantodes inornatus, Blgr., p. 88. Upper and lower 
views of head and anterior part of body, and side view 
of head. 
2. Leptodira nigrofasciata, Gthr., p. 92. Upper view of 
head and anterior part of body. 
2a. Upper view of head. x2. 
2 b. Side view of head. x2. 
3. Rhinostoma vittatum, Blgr., p. 115. Upper and side 
views of head and anterior part of body. 
Prate VI. 
Fig. 1. Oxyrhopus bitorquatus, Gthr., p. 104. Young (type). 
Upper view of head and anterior part of body. 
Adult, from Moyobamba, Upper and 
side views of head and anterior part of body. 
Adult, from Sarayacu. Upper view of 
la. 
15. 
head and anterior part of body. 
2. Oxyrhopus maculatus, Blgr., p.110. Upper view of head 
and anterior part of body. 
Side view of head. 
2a. 
Prats VII. 
Fig. 1. Tachymenis affinis, Blgr., p. 119. 
2. Ialtris dorsalis, Gthr., p. 137. 
Upper, lower, and side views of head and anterior part 
of body. 
