I 



598 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.37. 



</ Pterodontia Gray, in Griffith's Anim. Kingd., vol. 15, Ins., pt. 2, p. 779, 1832. 1 



species. Type, Pterodontia flavipes Gray . 

 ^ Pteroptila Loew, Berliner Ent. Zeitschr., vol. 9, p. 165, 1865. 2 species. Type, 



J'ti roptila decora Loew, the first species, by present designation. Equals Meromacrus 



Eondani, 1848. 

 ^ Pterospilus Eondani, Dipt. Ital. Erodr., vol. 1, p. 152, 1856. 1 species. Type, Asilus 



muscarius Fabricius. Equals Acromyia Latreille, 1809.. 



Ptilodegeeria Brauer and Bergenstamm, Denkschr. Kais. Akad. Wiss. "Wien, vol. 



58, p. 375, 1891. 1 species. Type, Hijpostena obumbrata Wulp. 

 •/ Ptilodexia Brauer and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 56, 



p. 119, 1889. 1 species. Type, Estheria tibialis Desvoidy (as carolinensis, new 



species) . Equals Phorostoma Desvoidy, 1830. 

 */ Ptilomyia Coquillett, Proc. U. S. Nat. Mus., vol. 22, p. 261, 1900. 1 species. 



Type, Ptilomyia enigma Coquillett. 

 ^ Ptilopareia Brauer and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 56, 



p. 101, 1889. 1 species. Type, Tachina marginala Meigen. Equals Voria Desvoidy, 



1830. 

 i/ Ptilotachina Brauer and Bergenstamm, Denkschr. Kais. Akad. Wiss. Wien, vol. 58, 



p. 350, 1891. 1 species. Type, Tachina civilis Eondani. Equals Exorista Meigen, 



1803. 

 t/ Ptiolina Zetterstedt, Dipt. Scand., vol. 1, p. 226, 1842. 2 species. Type, Leplis 



obscura Fallen, the first species, by designation of Frauenfeld, Yerh. Zool.-Bot. 



Ges. Wien, vol. 5, 1855, p. 497. Syn., Eurytion Eennicke, 1867. 

 ^ Ptychoproctus Bigot, Eev. Mag. Zool. for 1859, p. 4, 1859. 1 species. Type, 



Ptychoproctus complexus Bigot. Equals Stylogaster Macquart, 1835. 

 K __Plildwpfrr*Lj^lEiGEii, Illiger's Mag., vol. 2, p. 262, 1803. 2 species. Type, Tipula 



contaminala Linnaeus, the first species, by designation of Latreille, Consider. Gen- 

 eral., 1810, p. 442. Equals Liriope Meigen, 1800. 

 y Puliciphora Dahl, Zool. Anzeiger, vol. 20, p. 409, 1897. 1 species. Type, Pidici- 



phora lucifera Dahl. Syn., Stethopathus Wandolleck, 1898; Pacftyneurella Brues, 



1903. 

 ^ Pullata Harris, Exp. Engl. Ins., p. 76, 1776. 6 species. Type, Tipida pomonte 



Fabricius (as funestus, new species), the second species, by present designation. 



Equals Bibio Geoffroy, 1762. 

 ^ Purpurella Desvoidy, Dipt.' Env. Paris, Mvop., p. 37, 1853.* 1 species. Type, 



Purpurella nobilis Desvoidy. Equals Stomoxoides Sch\effer, 1766. 



Pycnoglossa Coquillett, Proc. U. S. Nat. Mus., vol. 23, p. 613, 1901. 1 species. 



Type, Pycnoglossa flavipennis Coquillett. 

 ^ Pycnopogon Loew, Linn. Ent., vol. 2, p. 526, 1847. 4 species. Type, Dasypogon 



iiii.rtus Loew, the third species, by designation of Rondani, Dipt. Ital. Prodr., vol. 1, 



1856, p. 157. 

 *S Pycnosoma Brauer and Bergenstamm. Denkschr. Kais. Akad. Wiss. Wien, vol. 61, 



p. 623, 1894. 1 species. Type, Chrysomya regalis Desvoidy (as marginal is Wiede- 

 mann). Equals Chrysomya Desvoidy, 1830. 

 u Pygostolus Loew, Berliner Ent. Zeitschr., vol. 10, p. 16, 1866. 3 species. Type, 



Dasypogon politics Say (as argentifer, new species). Not Pygostolus Haliday, 1833. 



Equals Nicocles Jjennicke, 1867. 

 "' £xr£]Jia-dDEsvoiDy, Essai Myod., p. 462, 1830. 3 species (as 9). Type, Musca 



cadaverina Linn.eus, the second to fourth supposed species, by designation of Zetter- 

 stedt, Dipt. Scand., vol. 4, 1845, p. 1320. 

 * Pyrgota Wiedemann, Auss. Zweifl. Ins., vol. 2, p. 580, 1830. 1 species. Type, 



Pyrgota undata Wiedemann. Syn., Oxycephaia Macquart, 1843. 

 u ' Pyritis Hunter, Can. Ent., vol. 29, p. 131, 1897. 1 species. Type, Pyritis monti- 



gena Hunter. 



