ACADEMY OF SCIENCES. 



63 



witli those of the climate and surface of the country, the Saurians inhabitin.s^ 

 the dry regions where aquatic turtles and Batrachians cannot exist. 



The fishes, also, show some striking analogies, as might be expected from the 

 rocky character of our shores, more nearly resembling those of Europe than of 

 the Atlantic States. Others will be found among the Mollusca, many of which 

 seem to be identical with European species but not with those of the Atlantic 

 coast, the terrestrial forms excepted. 



Compared with other parts of America, our fauna is not so different as it 

 is from that of the Atlantic seaboard. Most of the genera, and many of the 

 species not found in the Atlantic States, occur more or less widely spread over 

 the whole western half of the United States which is characterized by plains 

 and mountains similar to ours. Thus some reach the Gulf of Mexico in Texas ; 

 others occur near the eastern borders of the Great Plains in \Yisconsin and 

 Indiana. Some extend far to the north, and others far to the south, in Mexico, 

 while a few of the birds are found also on the west coast of South America. 



I do not undertake to enumerate any except vertebrate animals here, having 

 already written a " Geographical Catalogue of the Mollusca," published by the 

 State Geological Survey in 18C7. 



Pkculiar Species. 

 The following are the higher animals believed to be peculiar to California : 



MAMMALS. 



1. PUTORIUS XANTHOGENYS GmiJ, 



2. VULPES LITTORALTS Baivd, 



3. Spermopiiilus Beecheyi Rick., 



4. Spermopkilus Harrisii Aud., 



5. Thomomys bulbitorus Rich., 



6. Perognatiius parvus Peale, 



1. Reithrodon longicauda Biiird, 



8. HeSPEROMYS CALIFORXICUS Gaiiib., 



9. Neotoma fuscipes Cp., 



10. Arvicola ED AX Lec, 



11. Lepus caltforxious Gray, 



12. Lepcs trowbridgii Baird, 



BIKDS. 



BuTHO CoopERi? Cass., 

 Syr.mum occidentale Xantus, 

 Spiiyropicus thyroideus Cass., 

 Pious Nuttallii Gamb., 



5. Harporhynchus redivivus Gamb., 



6. Harporhynchus Lecontii ? Lawr., 

 i. YiREO HuTTONi Cass., 



8. Melospiza Heermaxxi Baird, 



9. Peuc.ea ruficeps Cass., 

 10. PiPiLO Fuscus Sivainson, 



3. 

 4. 



Yellow-cheeked Weasel. 

 Little Gray Fox. 

 California Ground Squirrel. 

 Harris' Ground Squirrel. 

 California Gopher Rat. 

 Littfe Pouched Rat. 

 Long-tailed Wood -Mouse. 

 California Wood Mouse. 

 Calilornia Wood Rat. 

 Voracious Field Mouse. 

 California Hare. 

 Trowbridge's Hare. 



Cooper's Hen Hawk. 

 AVestern Barred Owl. 

 Brown Woodpecker. 

 Nuttall's Woodpecker. 

 California Mocking Thrush. 

 Leconte's Mocking Thrush. 

 Hutton's Greenlet. 

 Coast Song Sparrow. 

 Red -capped Finch. 

 Brown Finch. 



