184 OKTALIDAE. 



Ccroxys. 



Macquart, Uht Nat. Dipt. II, 437; 1835; Loew, Monogr. Ill, 125. 



*canus Loew, Monogr. Ill, 129; Tab. VIII, f. 22; Berl. Ent. Z. II, 



374 (Oiialis). — Yukon River, Alaska; Nebraska (.tbe same or a 



very similar species occurs in Europe). 

 * ol)sciiricornls Loew, Monogr. Ill, 126; Tab. VIII, f. 20. — Nebraska. 

 *ocliriooniis Loew, Monogr. Ill, 126; Tab. VIII, f. 21. — Northern 



Wisconsin River. 

 *siniilis Loew, Monogr. Ill, 127; Tab. VIII, f. 23. — Connecticut; 



Quebec, Canada (ressembles very much the europeau C. crassi- 



pennis). 



Aiiaoampta. 



Loew, Zeitsclir. f. d. Ges. Naturw. 1868, 7; Monogr. Ill, 129; 1873. 



*latiiiscula Loew. Monogr. Ill, 130; Tab. VIIl, f. 19 — California. 

 * pyrrhocepliala Loew, Zeitsclir. f. Ges. Naturw. 1870, 335. — Cali- 

 fornia. 



SECTION V. PTEROCALLINA. 

 Ptcrocalla. 



Rondani, Esame di varie specie d'insetti ditteri Braziliani ; Torino, 1848; 

 Loew, Monogr. Ill, 132. {^"% 



Strigula Loew, Monogr. Ill, 133; Tab. VIII, f. 30. — Georgia (type 

 in the Berl. Museum). 



Stictoccphala. 



Loew, Monogr. Ill, 134; 1873. 



*cril)elliim Loew, Monogr. Ill, 134; Tab. VIII, f 26 — Nebraska. 

 *cril)ruin Loew, Monogr. III. 135; Tab. VIII, f. L'5 — Middle States. 

 *cortioalis (Fitch) Loew, Monogr. Ill, f. 136; Tab. VIIl, f. 28. - 



New York. 

 *Tau Say, J. Acad. Phil. VI, 184, 4; Compl. Wr. II, 369 (O)ictlis); 



Loew, Monogr. Ill, 138; Tab. VIII, f. 29. — Atlantic States. 



Callopistria. 



Loew, Monogr. Ill, 140; 1873. 



•annulipes Macquart, Dipt. Exot. 5e Suppl. 121 (Platyatoma) ; Loew, 

 Monogr. Ill, 141; Tab. VlII, f. 27. — Atlantic States. • 



Mycuuis. 



R. Tesvoidy, Myod. 717, 1830; Loew, Monogr. Ill, 142. 



scutellaris "Wiedemann, Auss. Zw. II, 484 (Tnjpdn); Loew, Monogr. 

 I, 92 Tab. II, f. 26, 27 (Tnjpita?) ; Monogr. Ill, 143. — Mexico. 



