CLASS REPTILIA 



387 



2. Rhynchocephalia (rin ko se fa' li a; G., rhynchos, snout, and 

 kephale, head). — One living type, a lizard-like animal found only in New 

 Zealand. 



0/fac/vry lobes 



Optic lobe 



Cerebellum 



X 

 Medulla 



Fig. 273. — Brain of alligator, Alligator mississippiensis (Daudin), viewed from above. 

 (From a Ziegler model, after Wiedersheim.) The roots of the cranial nerves are marked by 

 roman numerals. 



3. Crocodilia (krok o dil' i a ; G., krokodeilos, crocodile). — Crocodiles 

 and alligators. 



