ROLAND HAYWARD. 13 



STUDIES IX AMARA.« 



BY ROLAND HAYWARD. 



During the past few years a large part of my leisure time has 

 been devoted to a study of the North American species of Amara. 

 At first I had intended to confine myself to a revision of the sub- 

 genus Cyrtonotus Steph. (Leirns Zimm.), but gradually the field has 

 been extended until all the subgenera represented in our fauna have 

 been included, with the single exception of Celia Zimm., the latter 

 having been thoroughly reviewed by the late Dr. Horn souie years 

 ago.f Triama Lee. was also studied by Horn at the same time,^ 

 but for several reasons it has been deemed advisable to include it in 

 the present paper. 



In the course of my work I have been much indebted to many 

 kind friends and correspondents who have aided me in various 

 ways, and to them I would express my gratitude. 



Through the kindness of my friend, Mr. Samuel Henshaw, of the 

 Museum of Comparative Zoology at Cambridge, I have at all times 

 had ready access to the LeConte collection, a privilege of inestimable 

 value. To Dr. L. O. Howard and Mr. E. A. Schwarz of Washing- 

 ton, who have placed in my hands for study all the specimens of 

 Cyrtonotus in the collection of the National Museum, 1 am also 

 under deep obligations, while to Dr. Skinner of Philadelphia I am 

 indebted for the privilege of examining the Horn collection, now 

 a part of that of the American Entomological Society. 



My thanks are also due to Messrs. Frederick Blanchard, F. C. 

 Bowditch, H. C. Fall, Chas. Liebeck and H. F. Wickham for the 

 loan, in many cases, of their entire material for several years, as 

 well as to Dr. F. E. Blaisdell and Messrs. P. G. Bolster, John D. 

 Evans, Th. Gotzelmaun, F. Knaus, J. D. Sherman, Jr., and F. xV., 

 Sherriff for the loan and gift of specimens. 



Assistance haS also been rendered by Herr Edmund Keitter of 

 Paskau, who has kindly loaned me examples of all of the European 

 and of several Siberian species of Cyrtonotus. 



* This paper was practically complete at the time of Mr. Hayward's death, 

 April 11, 1906. A few lines have been supplied from the original descriptions 

 or from Mr. Hay ward's notes. — Samuel Henshaw. 



t Trans. Am. Ent. Soc, 1892, xix, pp. 19-40. 



i Ibid., pp. 18-19. 



TBANS. AM. ENT. SOC. XXXIV. JANUARY, 1908. 



