30 DIPTERA. 
1. Belvosia bifasciata. (Tab. II. figg. 8; 8a, head in profile.) 
Musca bifasciata, Fabr. Syst. Ent. p. 777. 19; Ent. Syst. iv. p. 825. 33; Syst. Antl. p. 299. 78. 
Ocyptera bifasciata, Latr. Dict. d’Hist. Nat. xxiv. p. 195. 373. 
Tachina bifasciata, Wiedem. Aussereur. zweifl. Ins. ii. p. 305. 44’. 
Latreillia bifasciata, Rob.-Desv. Essai sur les Myod. p. 104. 1. 
Nemorea bifasciata, Macq. Suit. 4 Buffon, Dipt. ii. p. 104. 19; Bigot in Sagra’s Hist. fisica polit. 
y nat. de Cuba, vii., Ins. p. 342°. 
Belvosia bifasciata, Macq. Dipt. Exot. ii. 3, p. 57. 1, t. 6. f. 2°; van der Wulp, Tijdschr. voor Ent. 
XXV1. p. 23. 16%. 
Belvoisia bifasciata, Williston, Trans. Am. Ent. Soc. xiii. p. 802’. 
Hab. Nortu America? ’, Washington ®, Atlantic States >, Minnesota 5.—GUATEMALA, 
San Gerénimo (Champion).—Souta America! ?, Colombia‘, Brazil? +; ANTILLES, 
Cuba ?. 
Two male specimens have been captured by Mr. Champion in Guatemala. 
Following Macquart (Dipt. Exot. ii. 3, p. 56) I formerly identified B. bicincta, Rob.- 
Desv. (Essai sur les Myod. p. 103), with B. bifasciata (Fabr.), considering the difference 
in the length of the third antennal joint as a mere sexual character. Recently, how- 
ever, Williston >, after having examined many specimens of both sexes, treats the two 
species as distinct; he refers to B. bicincta, Rob.-Desv., specimens in which the third 
antennal joint is shorter (not more than twice the length of the second), the posterior 
margin of the third abdominal segment more broadly black, and the last section of the 
fourth vein more concave. 
The above-mentioned specimens from Guatemala, as well as the South-American 
ones in the Royal Museum at Leyden and in my own collection, belong to B. bifasciata 
in the sense of Williston. 
2. Belvosia leucophrys. (Tab. II. figg. 9; 9a, head in profile.) 
Tachina leucophrys, Wiedem. Aussereur. zweifl. Ins. 1. p. 808. 49°. 
Blepharipeza leucophrys, Schin. Reise d. Novara, Zool. i., Dipt. p. 386. 189°; Williston, Trans. 
Am. Ent. Soc. xiii. p. 304°. 
Blepharipeza rufipalpis, Bigot in Sagra’s Hist. fisica polit. y nat. de Cuba, vii., Ins. p. 343°; Macq. 
Dipt. Exot. ii. 8, p. 55. 1, t. 6. f. 1°; Suppl. i. p. 158. 
Belvosia rufipalpis, van der Wulp, Tijdschr. voor Ent. xxvi. p. 25. 17°. 
Hab. Norty America, Connecticut *, Pennsylvania ?.—Mexico 45, Presidio (forrer), 
Orizaba (H. H. Smith & F. D. Godman), Medellin near Vera Cruz (i. A. Smith); 
Costa Rica, Rio Sucio, Volcan de Irazu 6000 to 7000 feet (Rogers).—SoutH AMERICA %, 
Colombia ? ®, Brazil! 2°, Argentine Republic®; ANTILLES, Cuba 4 ®, San Domingo ?. 
Several specimens of both sexes. ‘The identification of Blepharipeza rufipalpis, 
Macgq., with Zachina leucophrys, Wiedem., has been proved by Schiner, who has com- 
pared typical specimens. | 
The Central-American examples before me vary considerably in size: the largest 
