GLOYD: ODONATA 507 



Since then the most outstanding workers have been Calvert, Williamson, Need- 

 ham, and Kennedy for the United States and Mexico, and E. M. Walker for 

 Canada. IMuttkowski gave lis a Catalogue of the Odonata of North America in 

 1910 and Whitehouse one for Canada, Newfoundland, and Alaska in 1948. The 

 Anisoptera part of the Handhook mentioned below has been rewritten by Need- 

 ham and Westfall and is now ready for publication. Special mention should 

 be made of Dr. Walker's two extremely fine, classical monographs of the North 

 American dragonflies of the genus Aesh7ia (1912) and of the genus Somatoch- 

 lora (1925), and of Dr. Kennedy's two much-quoted papers concerning the Odo- 

 nata of Washington, Oregon, California, and Nevada. Some of the longer papers 

 dealing with state faunas are those of Kellicott for Ohio (1899), Williamson for 

 Indiana (1900), Carman for Connecticut (1927), and Byers for Florida (1930). 

 Mrs. Klots (1932) has treated the odonate fauna of the West Indies, Garcia- 

 Diaz (1938) for Puerto Rico, and Whitehouse (1943) for Jamaica. As yet there 

 is no manual for South American Odonata and to write one soon would be pre- 

 mature because of studies in progress and a vast amount of unworked material. 

 A check list, however, would be quite helpful. Since 1853, Selys, Hagen, Ris, 

 Calvert, Williamson (also responsible for large collections), Kennedy, R. Mar- 

 tin, Forster, Navas, Sjostedt, Geijskes, Borror, Montgomery, Santos, McLachlan, 

 E. Schmidt, Byers, Longfield, Eraser, Cowley, Gloyd, and others have con- 

 tributed to a knowledge of the fauna. 



The primary work of describing species has continued at a rapid rate 

 throughout the first half of the present century, the number now being in the 

 neighborhood of 5,000, but along with it there have been many studies con- 

 cerned with geographical distribution, bionomics, nymphs, parasites, morphol- 

 ogy and ontogeny of various structures, fossils, monographic revisions, and 

 phylogeny.- Some of the greatest advances for the order as a whole may be 

 credited to the following contributions: Catalogue of the Odonata (Dragonflies) 

 of the Vicinity of Philadelphia, with an Introduction to the Study of This Group 

 of Insects, by Calvert (1893); Untersuchungen iiher die Gestalt des Kaumagens 

 hei den LiheUen und ihren Larven, by Ris (1896), with its phylogenetic conclu- 

 sions; Wings of Insects, by Comstock and Needham (1898, 1899); Genealogic 

 Study of Dragon-fly Wing Venation, by Needham (1903); Collections zooJo- 

 giques du Baron Edm. de Selys-Long champs, the "Cordulines" and "Aesch- 

 nines," by R. Martin (1906 and 1908-1910 respectively), and the "Libellulines," 

 by Ris (1909-1919), the latter being a very large and great monograph; Die Fos- 

 silen Insecten, by Handlirsch (1908), in which a new classification was proposed 

 based on many factors; The Biology of Dragonflies, by Tilh'ard (1917), a superb 

 book written primarily for biologists; A Venational Study of the Suborder Zy- 

 goptera (Odonata) with Keys for the IdentificaUon of Genera, by Munz (1919) ; 

 numerous papers concerning phylogeny by Calvert, Ris, Williamson, Tillyard, 

 Kennedy, Eraser, Needham, and many others; and the comparatively recent 

 paper published in three parts, A Reclassification of the Order Odonata, by Till- 

 yard and Eraser (1938-1940). 



Of the many faunal papers some of the most extensive and recent ones for 



2. See Calvert, Progress in our Knowledge of the Odonata from 1895 to 1912. Trans. 

 Second Ent. Congress 1912. 



