XXXIV AUTHORITIES. 



LE BARON, William, M. D - (State Entomologist for Illinois). -- Second 

 annual Report on the noxious insects of the State of Illinois, 1872. 



Tacluna (Exorista) pJtycitue, n. sp. 



LINNE, Carol, a. -- Systema Naturae, etc. Editio XII. Second vol. 1767. 

 Amoenitates Academicae s. Dissertationes variae Phys. Med. Bota- 

 nicae, ante hac seorsim editae, nuuc collectae et auctae. 7 Voll. 

 cum tab. aen. 174969. 



Asilus aestuans from Pennsylvania, n. sp. 



LOE\V, Dr. H. -- Beschreibung einiger neuen Tipirtaria, terricoln. In the 

 5th vol. of the Linnaea Entomologica. Stettin, 1851. 



General observations on the genera: Ptilogyna, Aporosa and 

 ToocorMna, and the descriptions of three new species, Ap.rufis- 

 cens, virescens, and Tox. fragilis, from the West Indies. 

 Bemerkungen iib. die Gattung Beris. - - In the 7th vol. of the 

 Entomologische Zeitung Stettin, 1846. 



Several American species mentioned; no new ones described. 

 Helophilus. In the 7th vol. of the Entomologische Zeitung. 

 Stettin, 1846. 



Monograph of the genus, mentioning some American species; 

 H. (jlacialis, n. sp. from Labrador. 

 Chauna, genus novum. - - 1. c. 8th vol. p. 370. Stettin, 1847. 



Chauna variabilis, n. sp. from Cuba. 



Ueber Titmwccra stictica, Fab., und ihre uachsten Verwandtcn, 

 etc. - - 1. c. 8th vol. p. 114. Stettin, 1847. 



Tet. flavescens, n. sp. from Carolina. 



Ueber Tetanocera femujiiica, Meig. uud die ihr verwandten Arten. 

 - 1. c. 8th vol. p. 194. 

 Tet. plumosa, n. sp. from Sitka. 



Bemerkungen iiber die Familie der Asiliden, etc. in 4to. Berlin, 

 1850. 



Dasypogon anfhracinws, n. sp. from Mexico. 



Ceria. - - In the Neue Beitrage zur Kenntniss der Dipteren, by 

 Dr. Loew. Erster Beitrag. Berlin, 1853. 



Monogiaph of the genus; Ceria pictula from the U. St.; C. 

 arittiff and signifera, from Mexico, are new. 

 Conops. il. c.) 



Monographical Essai. Conops gemtalis, bttlbirostris, and casta- 

 noptera, n. sp. from the U. States. 

 Neue Diptern (1. c. Zweiter Beitrag. Berlin, 1854X 



Pyrgota miHepimctata, n. sp. from North America (=*P. vdlida 

 Harris). 

 Bombylius. (1. c. Dritter Beitrag. Berlin, 1855.) 



Monograph of the genus, containing important synonymical re- 

 marks upon several American species; no new ones described. 

 Dipterologiscbe Notizen. Neue Americanische Dolichopoden. 

 In the Wiener Entomologische Monatsschritt, vol. i, p. 37. Vienna, 



