64 " PROCEEDINGS OF THE CALIFORNIA 



11. Agklaius TRICOLOR A'^^aif., Tricolor Eedwing. 



12. Pica Nuttallii Aud, Yellow-bilhd Magpie. 



13. LoPHORTYX CALiFORNicus Slidw, California Quail. 



14. yEoiALiTis NivosA Cass., Snowy Plover. 



All of these birds, except the last two, are arboreal, and even the last is 

 scarcely a wader. They are all nearly constant residents, and if some migra- 

 tory species were included, which leave the State only in winter, the list would 

 be considerably increased. 



REPTILES. 



Of the. reptiles, the range is still too little known to state positively which 

 are peculiar. A few, however, are known to be so, being confined to the re- 

 gions west of the Sierra Nevada. 



1. Tapaya coronata Stmins., California Horned Toad. 



2. GERRHONOTUSMULTicARiNATrsi?/a»it'., Many-keelcd Lizard. 



3. Crotalus Halloweli.i Cp., Hallowell's Euttlesnake. 



4. CoNTiA MiTis Baird If Gnl., Gentle Brown Snake. 



5. Drymobius lateralis Hallow., Striped-side Whip Snake. 



6. EuT^NiA ELEGANS Bajrd cy Grd., Elegant Garter Snake. 

 Some of these may occur also in Oregon. 



BATRACHIA. 



1. Rana longipes Halloic, Long-footed Frog. 



2. Rana Boylei Band, Boyle's Frog. 



3. Rana Draytoni Baird fy Grd., Drayton's Frog. 



4. Rana Lecoxtii Baird If Grd., Leconte's Frog. 



5. BuFO HALOPHiLA Buird ^- Grd., Salt-marsh Frog. 



6. ScAPHiopus Hammondii Baird, Hammond's Spade-Foot. 



7. Amblystoma CALiFORXicmi Gray, California Salamander. 



8. A. puNCTULATDM Graij, Speckled Salamander. 



9. Aneides lugubris? Halloic, Mournful Salamander. 

 10. Batrachoseps attennuatus ? Bona]}., Slender Salamander. 



Still more of these are likely to be found in the damper climate of western 

 Oregon, where but few reptiles have been yet collected. 



Of the Fishes too little is known to decide which are peculiar, though most 

 of those resident in the fresh waters are believed to be so, numbering about 

 twenty-six species. 



Natural Kerions. 



Having now shown the relations of our fauna with that of other parts of the 

 world, I proceed to indicate the principal natural regions into which the State 

 may be divided, each characterized by more or less peculiar species. 



Commencing at the southeast, they may be described as follows, viz : ^ 



I. Colorado Valley. 

 The Colorado valley from the Great Bend, Lat. 36°, to the mouth of the 

 river, Lat. 32". More than half of this forms the eastern boundary of CJali- 



