SPHiEROPHOEIA. 



23 



in the middle. legs black or blackish ; thefour anterior femora, except the base, and their tibiae 

 brownish-yellow. 

 Length 10 millim. 



Hab. Mexico, Orizaba (H. H. Smith). 



6. Sphserophoria ? 



Hdb. Mexico, Ciudad in Durango (Forrer). 



A single specimen (female) differs from the preceding in the face being without a 

 black stripe (there is a minute crescentic spot above the oral margin), in having the 

 first two joints of the antennse more broadly red, the front narrower above, the legs 

 wholly yellow, and, perhaps, in the narrow interruption of the fourth abdominal band. 



A second female specimen, agreeing otherwise perfectly with this, has a blackish 

 stripe in the middle of the face. 



1 am unable to identify any of the following species of Sphcerophoria described by 

 Bigot :— 



Sphcerophoria rostrata, Bigot, Ann. Soc. Ent. Fr. 1884, p. 102. — Mexico. 



nasuta, Bigot, loc. cit. 1884, p. 103. — Mexico. 



nasuta, Bigot, loc. cit. 1888, p. 253. — Mexico *. 



trilimbata, Bigot, loc. cit. 1888, p. 253. — Mexico. 



pachypyga, Bigot, loc. cit. 1884, p. 104. — Mexico. 



fnlvicauda, Bigot, loc. cit. 1884, p. 104. — Mexico. = JT 



It is not impossible that S. rostrata belongs to the species described above under no. 3, 

 and that some of these names do not indicate different species. 



* Bigot has several times made this error of using the same specific name in a genus for different 

 species. I have also observed the followiag : — 



Eristahmyia calomera, Bigot, Ann. Soe. Ent. Fr. 1880, p. 229 — South America ; id. op. eit. 1883, p. 337 — 

 South America. 



Orthonevra varipes, Bigot, op. cit. 1880, p. 150— Persia ; id. ibid. 1885, p. 249— Mt. Caucasus. 

 Ocyptamus fuscicolor, Bigot, op. cit. 1884, p. 116— New Caledonia; id. ibid. 1885, p. 252— New 

 Caledonia. 



Sargus pallipes, Bigot, op. cit. 1879, p. 222— Ceylou ; id. ibid. 1887, p. 28— North America, Mt. Hood. 

 (The name in both cases is preoccupied.) 



