AUTHORITIES. XV11 



Nineteen diptera are described and figured in this work, seven of 

 which for the first time. 

 SAY, Th. Diopsis brevicornis, n. sp. (In the Journal of the Academy of 



Natural Sciences of Philadelphia, vol. i. p. 23.) 



" Some account of the insect known by the name of Hessian Fly, etc. 

 (In the Journ. A. N. Sci., Phil., vol. i. 1817.) 



Cecidomyia destructor, Say, has been described for the first time 

 in this paper. 



STAGER, R. C. Greenland's Antliater. (In Kroyer's Nat. Tidsskrift, new 

 series, vol. i. p. 346. 1845.) 



Fifty-five diptera are mentioned, eight of which are new. 

 THUNBERG. In Act. Soc. Gothoburg. 1819. Pars III, 7, Tab. 7, fig. 2. 

 (Quoted so by Wiedemann, Auss. Zw. I, 110, 4, who reprints Thun- 

 berg's description of Pantophthalmus tabaninus, from the W. Indies.) 

 WALKER, F. List of the Specimens of Dipterous Insects in the Collection 

 of the British Museum. Four Parts and three Supplements. Lon- 

 don, 1848-55. 



Numerous new species from N. America. The supplements con- 

 tain a synopsis of the described species of Tabanidce, Asilidce, Acro- 

 ceridece, and Stratiomydce, from all parts of the world. 

 " Insecta Saundersiana, or characters of undescribed Insects in the 

 collection of W. W. Saunders, Esq. Diptera. Five parts, with 

 plates. London, 1850-56. 



Numerous new species from N. America. 



WESTWOOD, J. 0. Insectorum novorum exoticorum ex ordine dipterorum 

 descriptiones. (In the London and Edinburgh Philosophical Maga- 

 zine, 1835.) 



Bittacomorpha, nov. gen. Lepidophora cegeriiformis, Gray. 

 " Insectorum nonullorum novorum (ex ordine dipterorum) descrip 

 tiones. (In the Annales de la Societe Entomologique de France, 

 1835.) 



Limnobiorhynchus canadensis, nov. gen. et. sp. 



" Description of some new exotic Acroceridce. (In the Transactions 

 of the Entomological Society, vol. v. p. 91.) 



Six new species from N. America. 



" Synopsis of .the dipterous family Midasiidce, with descriptions of 

 numerous species. (In Westwood's Arcana Entomologica, vol. i. 

 Plates XIII and XIV.) 



Five new species from N. America. 



" Generis dipterorum monographia Systropi. (In Guerin's Magazin 

 de Zoologie, 1842.) 



Systropus fcenoides, n. sp. from Mexico. 



" Diptera nonulla exotica descripta. (In the Transactions of the 

 Entomological Society, vol. v. p. 231. 1850.) 



Ceria daphnceus, Walk. ; from Jamaica, described and figured. 

 B 



