II TABLE OF CONTENTS. 



Pa^e. 

 Part II. Check-list of the species of Batrachia and Eeptilia, &c.— Continued : 

 Class Eeptila — Continued : 



Order Lacertilia 44 



Oplieosauri 44 



Pleurodonta 44 



Typhlophthalmi 44 



Leptoglossa 44 



Diploglossa 46 



Iguania 47 



Nyctisaura 50 



Testudinata 50 



Atliecse 50 



Cry ptodira , 51 



Crocodilia 54 



Part III. On geographical distribution of the Vertehrata of the Eegnum Nearc- 



ticum, with especial reference to the Batrachia andEeptilia 55 



I. — The faunal regions of the earth 55 



II. — Number of species 58 



III. — Eelations to other realms 61 



IV. — The regions 67 



Austroriparian 68 



Eastern 70 



Central 71 



Pacific 72 



Sonoran 73 



Lower Californian 74 



V. — -The Austroriparian region 76 



VI. — The Eastern region 82 



VIL— The Central region 88 



VIIL— The Pacific region 89 



IX. — The Sonoran region 90 



X. — The Lower Californian region 92 



XI. — Eelation of distribution to physical causes 93 



Pari iV. Bibliography 97 



A.— Works on the classification of Batrachia and Eeptilia 97 



B. — Works treating of the geographical distribution of North American 



Batrachia and Eeptilia 100 



Alphabetical index 101 



