66 



PROCEEDINGS OF THE ACADEMY OF 



[1898. 



Nevada of El Dorado, Tuolumne, Mariposa, Fresno and Tulare 

 Counties, California, between the altitudes of 3,700 and 9,000 feet. 

 G. multicarinatus (Blainville) appears to be confined to the San 

 Lucan Fauna of Lower California. G. scincicauda (Skilton) has 

 been found in northwestern Lower California, in the San Diegan^ 

 Californian and Pacific Faunse of California, in western Oregon and 

 in Washington, its range overlapping those of G. burnettii, G.pal- 

 meri and, probably, G. principis. 



The probable relationship of these species may be indicated 

 thus: — 



