CATALOGUE OF NORTH AMERICAN DIPTERA. 75 



Anatomy of Diptera, bibliography, table of families, definition of each 

 family, and table of North American genera for each family except 

 Tachinidffi and Dexiidze. A few generic names are altered, or new ones 

 proposed, on account of preoccupation. I have omitted all references to 

 this work, except where names are changed, because I assume that all 

 workers with Diptera are familiar with it. To the beginner it is indis- 

 pensable, and to the advanced worker a great convenience. 

 On the Diptera of St. Vincent. Transactions of the Entomological Society 

 of London, 1896, pt. 3, pp. 253-446, 7 plates. 



Many new genera and species from this island, which is far south in 

 the Lesser Antilles. 



Diptera Brasiliana. iv. Kans. Univ. Quarterly, vi, 1-12; Jan., 1897. 



Notes on Lipochccta; some new genera and species from Grenada, W. L 

 On the Genus Thlipsogaster Rond. Psyche, March, 1899, 331, 332. 



The American species are not of this genus. 

 Notes and Descriptions of Mydaidse. Kansas Acad. Science, 1897, 53-58. 

 Mydas quadrilineatus and Ecthypus tozvnsendi, new North American 

 species ; a few South American species. 



Note.- — An admirable feature of Williston's work, which does not show 

 fairly in the above list, is the attention he has given to identifying and 

 redescribing the species of other writers. In all his longer papers this is 

 a prominent part, frequently occupying as much space as the new descrip- 

 tions, and requiring more time than they in preparation. 

 Woodworth, Chas. W. 



Gonia senilis Will., Psyche, v, 43, 1889. 

 Zetterstedt, J. W. 



Diptera Scandinavije, disposita et descripta. Lundae, 1842-1860. 



While this work treats only of Scandinavian species, there are many 

 which are circum-polar. Zetterstedt's earlier work, Insecta Lapponica, is 

 mostly reproduced in this. 



