276 C. H. TYLER TOWNSEND. 



NOTES. 



Illigeria Rob. Dsv. Myod. 273. — This is apparently the same as the 

 genus Melanophora. The differences given by R. D. are totally 

 insufficient. The three North American species referred to this 

 genus by Walker belong, as O. S. observes (Cat. Dipt. N. A. 

 156), to entirely different genera. 



Theresia R. D. Myod. 325. — The characterization is too scanty to 

 include this genus in the synopsis. Nothing is said of the ve- 

 nation, proboscis, etc. It is said to be distinguished from Fho- 

 rostoma by the antennse being longer and reaching to the epis- 

 toma, but there is no assurance that it agrees with it in other 

 characters. Br. Bgst. (Muse. Sch. i, 51) indicate its affinity 

 Avith Ptllodexia. 



Homodexla Big. Bull. Soc. Ent. Fr. 1885, xxvi. — Mr. v. d. Wulp 

 has shown (Biol. C-A. Dipt, ii, 263-4) that this genus is un- 

 tenable, since it includes forms which must be referred to various 

 different genera. 



Anthracomyla Rdi. — The same author points out (Biol. C.-A. D. ii, 

 264) that Bigot's species referi-ed here is misplaced. It should 

 perhaps be referi-ed to Calodexia v. d. W. 



Rhamphlnina Big. Bull. Soc. Ent. Fr. 1885, xi. — Shown by v. d. 

 Wulp (Biol. C.-A. Dipt, ii, 225) to be insufficiently separated 

 from Rhynchodexia Big., of which it must be considered a 

 synonym. 



Siphoniomyia Big. Bull. Soc. Ent. Fr. 1885, xii. — The single Mexican 

 species for which Bigot erected this genus is stated by v. d. 

 Wulp to belong to the Tachinid genus Trichophora (Biol. C.-A. 

 Dipt, ii, 225). 



Oplisa Rdi. — Mr. Bigot has referred two Mexican sj)ecies to this 

 genus. Both belong to different genera. 0. albifacies Big. may 

 be referred to the Tachinid genus Anisla v. d. W. ; and 0. ni- 

 grifacies Big. is the same as Degeeria longipes v. d. W., which 

 must be known as D. nigrifacies Big., the latter name having 

 priority (see v. d. AV., Biol. C.-A. Dipt, ii, 264). 



Pyrrhosia Rdi. — This genus is indicated by Br. & Bgst. (Muse. 

 Schiz. i, 67) as equivalent to Leskla R. D. and Myohia R. D., 

 Sch., both of which belong to the Tachinidse. The single Mex- 

 ican species which Bigot refers here could never be recognized 

 or placed from the two-line description of its author. Mr. v. 



