LIST OF PLATES. 



Plate VII. 



127 



Fig. 1. Hypogeophis guentheri, Blgr., p. 96. 



1 a. , profile of head, X 2 nat. size. 



2. rostratus, Cuv., p. 96, profile of head, x 2 nat. 



size. 



Plate VIII. 



Pig. 1. Dermophis albiceps, Blgr., p. 98. 



1 a. , profile of head, x 2 nat. size. 



2. ■ mexicanus, D. & B., p. 98, profile of head. 



3. Gegenophis carnosus, Bedd., p. 101. 



3 a. , profile of head, x 2 nat. size. 



3 b. , tentacle, front view, much enlarged. 



3 c. , tentacle, lateral view, much enlarged. 



4. Siphonops annulatus, Mik., p. 102, profile of head. 



Plate IX. 



Fig. 1. Herpele squalostoma, Stutchh., p. 101, profile of head 

 and anterior part of hody. 



1 a. , tentacle, front view, much enlarged. 



1 b. , tentacle, lateral view, much enlarged. 



1 c. , lower view of posterior part of body. 



2. Chihonerpeton petersii, Blgr., p. 104, upper view of 



head and anterior part of body. 



2 a. , profile of head and anterior part of body. 



2 b. , lower view of posterior part of body. 



3. Typhlonectes natans, Fisch., p. 103, profile of head 



and anterior part of body. 



3 a. , lower view of posterior part of body. 



