COLEOPTERA OF BAJA CALIFORNIA. 303 



of the region, the most important series being that col- 

 lected in 1893 in the region around San Jose del Cabo 

 by Dr. Gustav Eisen. 



The present study enabled me to confirm the views ex- 

 pressed by Messrs. Baird, Cope and LeConte, and, at 

 the same time, to correlate details of distribution so that 

 we come more nearly in accord with the botanical indica- 

 tions. 



It seems to me unnecessary to repeat the geographical 

 details of the peninsula, as they have been so clearly 

 demonstrated by Mr. Brandegee in vol. ii of these Pro- 

 ceedings. In order that remarks to be made in this paper 

 may be understood without reference to those of Mr. 

 Brandegee, it may be stated that the peninsula is a nar- 

 row strip of land about 700 miles long, running in a south- 

 southeasterly direction from the southern boundary of 

 California, varying greatly in width, although in a general 

 way narrowing from north to south. Through the axis 

 runs a chain of mountains of a general elevation of 3,000 

 to 4,000 feet, The western slope is bordered by the 

 Pacific Ocean, the eastern by the Gulf of California. 



I have had occasion to note in speaking of the fauna 

 of Guadalupe Island that the cold arctic current, which 

 skirts t-he western shore of the North American conti- 

 nent, tends to render the insect fauna of the coast region 

 very nearly uniform as far south as Point Conception, 

 where the bluff coast and the rather abrupt eastern trend 

 of the coast line deflect the current, or rather the coast 

 recedes from the current, the climate becomes warmer 

 and many interior species reach the coast. The western 

 coast of the peninsula continues the general trend of the 

 coast Hne from Santa Barbara, so that no portion of it 

 seems to come within the influence of the Arctic current. 

 On the eastern or gulf coast, the mountains and foothills 



