INSECUTOR INSCITI^ MENSTRUUS 99 



Enterprise, Florida, June 25, 1 female (Hubbard and 

 Schwarz) ; Fort Myers, Florida, 2 females (W. P. Hazards) ; 

 Mimsville, Georgia, June 14 and August 13, 20, and 31, 1906, 

 4 females; Norfolk, Virginia, June 21, 1910, 1 female (F, A. 

 Johnson) ; Garrett Park, Maryland, July 9, 1899, 1 female (W. 

 R. Maxon). The foregoing records are from the National 

 Museum collection. Osten Sacken records the species from 

 New Jersey, Missouri, and the Sea Islands of South Carolina ; 

 Smith records it from Da Costa, New Jersey, and Hine from 

 Louisiana. 



Tabanus inanis Fabr. 



Tabanus inanis Fabricius, 1794, Ent. System., vol. 4, p. 368. 

 Tabanus ochrolcucus Meigen, 1804, Klass. u. Beschr. europ. 



Zweifl. Ins., vol. 1, p. 170. 

 Tabanus mcxicanus Fabricius (in part, not Linn.), 1805, Syst. 



Antliat., p. 98. 

 ■ Tabanus viridiflavus Walker, 1850, Newman's Zoologist, vol. 8, 



App. p. Ixvi. 

 Tabanus mcxicanus var. Bellardi, 1859, Saggio Ditt. Mess., part 



1, p. 59. 

 Tabanus tnexicanus Aldrich (in part, not Linn.), 1905, Cat. No. 



Amer. Dipt., p. 205. 

 Tabanus mcxicanus Kertesz (in part, not Linn.), 1908, Cat. Dipt., 



vol. 3, p. 260. 



This species lacks the spots on the wings, although some 

 specimens show darkening of the veins at the points where the 

 spots occur in flaviis. The wing-membrane is distinctly tinted 

 with yellow throughout, while that of mexicanus is absolutely 

 clear and that of flavus practically so. The upper branch of 

 the third vein is more frequently without appendix than with 

 it, and when it is present it is extremely short. The pile of 

 the mesonotum shows the same colors and variation as in the 

 two other forms. The third joint of the antennse is distinctly 

 more elongate than in either of the others, but subject to con- 

 siderable individual variation. The tibiae have no apical black 

 rings. 



Tabanus inanis occurs in the same region, the moist tropics, 

 with the true mexicanus. No specimens occur in this territory 

 which might be considered intergradients. The Tabanus sul- 



