fr 



582 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



Oscinisoma Lioy, Atti Inst. Veneto, ser. 3, vol. 9, p. 1125, 1864. 2 species. Type, 

 Chlorops vitripennis Meigen, the first species, by present designation. Equals Bota- 

 nobia Lioy, 1864. 

 " Osmsea Desvoidy, Essai Myod., p. 84, 1830. 1 species. Type, Osmsea grisea Des- 



voidy. Equals Actia Desvoidy, 1830. 

 s Ospriocerus Loew, Berliner Ent. Zeitschr., vol. 10, p. 29, 1866. 2 species. Type, 

 Dasypogon seacus Wiedemann (as seacides, new species), the first species, by designa- 

 tion of Back, Trans. Amer. Ent. Soc, vol. 35, p. 184, 1909. 

 •^ Ostracoccelia Giglio-Tos, Boll. Mus. Zool. Univ. Torino, vol. 8, no. 158, p. 10, 



1893. 1 species. Type, Ostracoccelia mirabilis Giglio-Tos. 

 ^ Oxycephala Macquart, Dipt. Exot., vol. 2, pt. 3, p. 197, 1843. 1 species. Type, 

 Pyrgota undata Wiedemann (as fuscipennis, new species). Equals Pyrgota Wiede- 

 mann, 1830. 

 */ ^r?/m>* Meigen, Uliger's Mag., vol. 2, p. 265, 1803. 2 species. Type, Musca hypo- 

 leon Linn^us (as trilineata Fabricius), the second species, by designation of Curtis, 

 Brit. Ent., 1833, p. 441. Equals Hermione Meigen, 1800. 

 "^ Oxyrhina Meigen, Syst. Beschr. Zweifl. Ins., vol. 7, p. 366, 1838. Change of name 

 for Trigonometopus Macquart, 1835, on the false ground that this name is not appro- 

 priate. Type, Tetanocera frontalis Meigen. Equals Trigonometopus Macquart, 

 1835. 



Ozodiceromyia Bigot, Ann. Soc. Ent. France for 1889, p. 321, 1889. 1 species. 

 Type, Ozodiceromi/ia mexicana Bigot. 

 ' '«/ Pachycephala Lioy, Atti Inst. Veneto, ser. 3, vol. 9, p. 1343, 1864. 1 species. 

 Type, Tachina goniseformis Meigen. Equals Baumhaueria Meigen, 1838. 

 «/ Pachycerina Macquart, Hist. Nat., Dipt., vol. 2, p. 511, 1835. 1 species. Type, 



Lauxania seticbrnis Fallen. 

 y Pachyj^sterMEiGEN, Uliger's Mag., vol. 2, p. 266, 1803. 1 species. Type, Nemotelus 



ater Panzer. Syn., Vappo Latreille, 1805; Neopachygaster Austen, 190L 

 </ Pachymeria Stephens, Syst. Cat. Brit. Ins., vol. 2, p. 262, 1829. 1 species. Type, 



Empis femorata Fabricius (as ruralis Meigen). Equals Empis Linnaeus, 1758. 

 * Pachymerina'MACQVART, Hist. Nat., Dipt., vol. 1, p. 333, 1834. 4 species. Type, 

 Empis femorata Fabricius, the first species, by designation of Coquillett, Proc. Ent. 

 S#c. Washington, vol. 5, 1903, p. 254. Equals Empis Linn^us, 1758. 

 </ Pachyneurella Bjojes, Trans. Amer. Ent. Soc, vol. 29, p. 382, 1903. 1 species. Type, 



Phora venata Aldrich. Equals Puliciphora Dahl, 1897. 

 ■/ Pachyophthalmus Brauer and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, 

 vol. 56, p. 117, 1889. 1 species. Type, Tachina signata Meigen. Syn., Sarcoma- 

 cronychia Townsend, 1892. 

 t/ Pachyrhina Macquart, Hist. Nat., Dipt, vol. 1, p. 88, 1834. 8 species. Type, 

 Tipula crocata Linn.eus, the first species, by designation of Westwood, Intr., vol. 2, 

 Synops., 1840, p. 128. 



Pachystoma Lioy, Atti Inst. Veneto, ser. 3, vol. 9, p. 910, 1864. 1 species. Type, 

 Musca flavipennis Fallen (as crassirostris Meigen). Equals Hylemya Desvoidy, 

 1830. 

 / Paclii/stomus Latreille, Gen. Crust. Ins., vol. 4, p. 286, 1809. 1 species. Type, 

 Nemotelus cinctus De Geer (as Rhagio syrphoides Panzer). Equals Erinna Meigen, 

 1800. 



Pales Desvoidy, Essai Myod., p. 154, 1830. 2 species (as 6). Type, Tachina proces- 

 sioned Ratzeblrg (as florea, new species), the first species, by designation of 

 Desvoidy, Hist. Nat. Dipt., vol. 1, 1863, p. 519 (as strenua Desvoidy). Not Pales 

 Meigen, 1800. Equals Neopales, new name. 



Pallasia Desvoidy, Essai Myod. , p. 239, 1830. 1 species (as 2). Type, Musca globosa 

 Fabricius. Equals Cistogaster Latreille, 1829. 



