Library use only 



NOTICE 



This is one of a series of keys to the Californian repre- 

 sentatives of the various groups of insects. 



The price of this number is ten cents. 



A key to the Orthoptera of California has already ap- 

 peared. It contains besides the synopses, quite full direc- 

 tions for the collection and preservation of these insects, 

 a full explanation of the names of the structures used in 

 classification, and suggestions for using the synopses. It 

 is intended for the use of the beginner in Entomology. The 

 price is twenty-five cents. 



A key to the Hemiptera will appear early next year. 



The synopses in these keys are extracted from the 

 author's "Insects of California," which will contain, when 

 completed, the synonymy and bibliography of all the insects 

 credited to this region. 'Subscription price $3.00, payable 

 on delivery, at the rate of 15c for each part of 16 pages. 



Address C. W. WOODWORTH, Berkeley, California. 



