Fig. 1. 
Fig. 1. 
Fig. 1. 
LIST OF PLATES. 445 
Prats XV. 
Tropidonotus sancti-johannis, Blgr., p. 230. Upper, 
lower, and side views of head and anterior portion 
of body. a. Upper and lower view of head of young 
(type specimen). 
. —— asperrimus, Blgr., p. 232. Upper and side views 
of head and anterior portion of body. 
Prate XVI. 
Tropidonotus chrysargoides, Gthr., p. 260. Upper and 
side views of head and anterior portion of body. 
saravacensis, Gthr., p. 261. Upper, lower, and 
side views of head and anterior portion of body. 
Prats XVII. 
Tropidonotus auriculatus, Gthr., p. 261. Upper, lower, 
and side views of head and anterior portion of body. 
a, Upper view of head, x 2; 6. Side view of head, 
x 2. 
. Pseudoxenodon dorsalis, Gthr., p. 271. Upper, lower, 
and side views of head and anterior portion of body. 
Prats XVIII. 
Fig. 1. Lioheterodon modestus, Gthr., p. 269. Upper and side 
views of head. 
2. Helicops trivittatus, Gray, p. 276. Upper, lower, and 
side views of head and anterior portion of body. 
3. Opisthotropis andersonii, Blgr., p. 284. Side view of 
head and anterior portion of body. a. Upper view of 
head, x3; 6. Side view of head, x3; c¢. Lower view 
of head, x 3. 
