452 



PROFESSOR LANKESTER. 



Class II. — Dipnoi. 



Subclass, Order, 



1. Monopneumones. 



2. Dipneumones 



Examples. 

 Ceratodus. 

 (^ Protopterus. 

 \Lej}idosiren. 



Subclasses and Orders of the 

 PENTADACTYLA BRANCHIATA. 



I. LlSSAMPHIBIA ■< 



II. Phra CTAMPHIBI a ■ 



1. Urodela 



2. Anura 



f Proteus. 



\Salamandra. 



f Haiia. 



XjDactyletlira. 



'1. Labyrinthodonta Archegosaurus. 



r, r^ u- f Ccecilia. 



2. (jrvmnophiona i c- z 



•' ^ [^StpAonqps. 



Subclass. 

 I. Chelonia 



Classes and Orders of the 

 LIPOBRANCHIA MONOCONDYLA. 



Class I. — Eeptilia. 

 Order. 



II. Lepidosauria 



Branch a. Sauria 



1. Annulata 



2. Vermilinguia 

 •3. Crassinliguia 



4. Brevilinguia 



5. Fissilinguia 

 Branch b. Ophidia 



1. Opoderodonta 



2. Colubriformia. 



3. Proteroglypha 



4. Solenoglypha . 



Examples. 



{Chelonia, Trionyx, 

 Eniys, ChelySy 

 Testudo. 



(^ Amphishmna. 

 \^ C/iirotes. 



Chamaleon. 

 j^ Platydactylus. " 

 \lgnama. 

 j Anguis. 

 \ Cyclodus. 



\ Lacerta. 

 \_Monitor. 



{ Stenosioma. 

 \Typhlops. 

 j Python. 

 \Colnher. 

 j Naja. 

 \Hydrophis. 

 J Viper a. 

 \Crotahis. 



