130 Journal New York Entomological Society, t'^'o'- -"^-"^iv, 



cates, pallidilabris has no fine pale hairs on the orbital margins, the 

 specirhen at hand can not belong to that species. 



5. Olfersia angustifrons Van der Wulp. 



1903. Olfersia angustifrons Van der Wulp, Biologia Centrali- Americana, 

 Diptera, II, p. 430. 



1903. Olfersia angustifrons Austen, Annals and Magazine of Natural 

 History, Series 7, XII, p. 265. 



This species has been recorded from Oaxaca (Oaxaca) and Teapa 

 (Tobasco), Mexico, and from Rio Sucio, Costa Rica, one specimen 

 from each locality, all in the British Museum. A fourth specimen 

 may now be recorded from Motzoronga, in southern Vera Cruz, 

 Mexico, taken from a species of trogon, February 18, 1892, by L. 

 Bruner. The narrow front (equal to an eye in width) and the rather 

 long palpi and proboscis (the former one and one fourth and the 

 latter three times as long as the clypeus, which is two thirds as long 

 as the front), are good characters of this species which are given in 

 the original description. The Motzoronga specimen, however, has 

 the auxiliary vein complete, though very weak. 



6. Olfersia americana Leach. 



1818. Feronia americana Leach, Memoirs of the Wernerian Natural His- 

 tory Society, Edinburgh, II, pi. XXVII, fig. 1-3. 



1830. Olfersia americana Wiedemann, Aussereuropaische Zweifliigelige 

 Inseckten, II, pp. 606—607. 



1835- Olfersia americana Macquart, Histoire Naturelle des Dipteres, II, 

 p. 641. 



1872. Hippobosca bubonis Packard, Guide to the Study of Insects, p. 

 417. 



1878. Olfersia americana Osten Sacken, Catalogue of the Diptera of 

 North America, p. 213. 



1895. Olfersia americana Johnson, Proceedings of the Academy of 

 Natural Sciences of Philadelphia, pp. 303-340. 



1899. Olfersia americana Johnson, Twenty-seventh Annual Report New 

 Jersey Board of Agriculture, p. 699. 



1903, Feronia americana Austen, Annals and Magazine of Natural His- 

 tory, Series 7, XII, p. 264. 



This species, the type of which is yet extant in the British Mu- 

 seum, was originally described by Leach from a specimen from 

 Georgia, and has subsequently been recorded by Packard from Mas- 

 sachusetts on the great horned owl {Bubo virginianns virgiuianus), 

 from Illinois and Texas by Osten Sacken, the latter record being 



