8 PREFi^CE. 



scriber's name is attached without a comma — thus indicating the 

 authorship of the dual name : e. g. Phycita nehulo Walsh. But when 

 a different generic name is employed than that under which the insect 

 was first described, the authorship is enclosed in parenthesis, thus — 

 Acrolasis tiehulo (Walsh); except where the whole name is already 

 in parenthesis, when a comma will be used for the same purpose : e. g., 

 (Acrolasis nehulo^ Walsh). 



All the illustrations, unless otherwise stated, are drawn by myself 

 from nature. Figs. 9 and 10 are, however, copied from Westwood. 



I again cheerfully acknowledge my indebtedness to Mr. Otto 

 Lugger and Miss M. E. Murtfeldt for assistance in my office work. 



My old office, on the corner of Fifth and Olive Sts., no longer fur- 

 nishing sufficient accommodations, I have secured pleasant quarters 

 at Room 42, St. Louis Insurance Building, N. W. Corner of Sixth and 

 Locust Sts., where all communications should be sent. 



Respectfully yours, 



CHAS. V. RILEY, 



State Entomologist. 



St. Lodis, Mo., Decemher 2, 1874. 



