610 Bulletin American Museum of Natural History [Vol. XLVI 



tion of the Lower Californian amphibians and reptiles in the present 

 paper. His important conclusions on the faunal subdivisions and life 

 zones of the peninsula are, of course, independent of his discussion of the 

 reptile fauna. In the present account, I have applied his subdivisions 

 into faunal districts to the more complete and accurate list of the reptiles 

 now available. 



List of New Forms Proposed in the Present Paper 



Type Locality 



Crotaphytus dickersonse Tiburon Island 



Phrynosoma nelsoni San Quintin 



Phrynosoma jamesi San Bartolome Bay 



Crotalus atrox elegans Angel de la Guardia Island 



Crotalus goldmani El Piiion 



List of New Forms in the Albatross Collection, 19 ll 1 



(Described by Dickerson, 1919, 2 and below) 



New Genus 



Sator Dickerson; type, S. grandsevus. 



New Species and Subspecies Type Locality 



Sauromalus townsendi Dickerson Tiburon Island 



Sauromalus varius Dickerson San Esteban Island 



Crotaphytus dickersonse, new species Tiburon Island 



Callisaurus ventralis inusitatus Dickerson Tiburon Island 



Callisaurus splendidiis Dickerson Angel de la Guardia Island 



Sceloporus lineatulus Dickerson Sta. Catalina Island 



Sator angustus Dickerson Sta. Cruz Island 



Sator grandasvus Dickerson Ceralvo Island 



Uta concinna Dickerson Cedros Island 



Uta squamata Dickerson Sta. Catalina Island 



Phrynosoma jamesi, new species San Bartolome Bay 



Cnemidophorus celeripes Dickerson San Jose Island 



Cnemidophorus disparilis Dickerson Tiburon Island 



Cnemidophorus estebanensis Dickerson San Esteban Island 



Cnemidophorus pxinctilinealis Dickerson Tiburon Island 



Cnemidophorus bartolomas Dickerson San Bartolome Bay 



Cnemidophorus vandenburghi Dickerson Carmen Island 



Verticaria casrulea Dickerson Carmen Island 



Crotalus atrox elegans,' new subspecies Angel de la Guardia Island 



'The United States National Museum numbers assigned to the types from the Albatross collection 

 will be found in the text of the present paper. 



2 Ctenosaura insulana, C. conspicuosa, Sauromalus interbrachialis, Callisaurus carmenensis, C. 

 plasticus, Uta mannophorus, and U. parva described by Dickerson in 1919 are referred to synonymy in 

 the present paper. 



