Hagen.] 20 [May 5, 



Synopsis of the Odonata of America. By Dr. H. A. Hagen. 



Since the publication of my Synopsis by the Smithsonian Institu- 

 tion, in July, 1861, 1 have endeavored to prepare a new and more 

 complete edition. The material contained in American collections 

 has been carefully studied and compared with that in my collection, 

 as a preparation for a complete monograph with detailed descrip- 

 tions and plates. At present its publication is impossible, but I think 

 that a complete list of all species hitherto described or known to me 

 may help students considerably, as a few works contain nearly all the 

 descriptions, and are in the hands of every one interested in the study 

 of the Odonata. There are a few species given only by names, but 

 the descriptions of these are ready, some even have been so for 

 years, and will be published at an early date. The list of localities 

 will be found augmented very considerably, chiefly for North Ameri- 

 can species. As in my former work, I give South American species 

 in a separate list, and all others, including those from Central Amer- 

 ica, Mexico and the West Indian Archipelago, together in the list of 

 the species of North America. This is done, of course, for conveni- 

 ence, and because that the larger part of the species of Central 

 America, Mexico, and the West Indian Islands are to be found in 

 Texas and in the southern parts of the United States, chiefly in 

 Florida, some as far north as Georgia. 



The synonomy is given as completely as possible. The opportunity 

 to study several types of Thomas Say in Harris's collection, and the 

 types of S. H. Scudder and Ph. R. Uhler, has been granted to me, 

 and has much assisted my work. 



Four hundred and eighty species are now enumerated, instead of 

 three hundred and sixty-seven in the former work. The subfamily of 

 the Agrionina has been omitted, as the Synopsis of the subfamily by 

 Baron De Selys Longchamps is in the way of publication. 



Subfamily CALOPTERYGINA. 

 Calopteryx. 



1. Calopteryx angustipennis, cf, ?. 



Sylphis angustipennis Selys! Monogr., 21, 2; Syn., 9, 2. — Walk. Cat., 

 590, 2. — Hag.! Syn., 56, 1; Stett. Z., xxiv, 372, 24; Proc. Bost. 

 Soc. Nat. Hist., 363, 51. 



