LIST OF PLATES. 495 
Puatr X. 
Fig. 1. Lioleemus gravenhorstii, Gray, p. 142. 
la. 
2. 
2a. 
3. 
3a. 
——., upper view of head, x 2. 
—— fuscus, Bigr., p. 144. 
—— ——. upper view of head, x 2. 
—— oceipitalis, Blgr., p. 156. 
, upper view of head, x 2. 
Pruatr XI. 
Liocephalus aculeatus, O’Sh., p. 167; and upper view of.head. 
Pruate XII. 
Liocephalus ornatus, Gray, p. 168; and upper view of head, x13. 
Puate XIII. 
Liocephalus guentheri, Blgr., p. 169; and upper view of head. 
Fig. 1. 
Puate XTY. 
Platysaurus guttatus, Smith, p. 262. 
Sauresia sepoides, Gray, p. 295. 
, upper view of head, x 2. 
Prare XV. 
Ophisaurus gracilis, Gray, p. 283; upper view of head 
and anterior part of body. 
, lateral view. 
, upper view of head, x 2. 
koellikeri, Gthr., p. 283; upper view of head 
and anterior part of body. 
, lateral view. 
.—— ——, upper view of head, x 2. 
