HORSEFLIES OF 'THE SUBFAMILY TABANINAE 125 
black, with sparse yellowish or whitish hair. Second palpal segment dark brown 
to black, very slender and tapering. 
Thorax mostly shiny black; prescutal lobe often yellowish or orange; meso- 
notum with sparse yellowish and black hair, the pleura with a considerable 
amount of yellow hair around wing base. Wing hyaline except for a brown 
costal cell and a faint tinge of brown between stigma and vein Mii... Legs black, 
the tibiae sometimes brownish. 
Abdomen above shiny black, with yellowish-brown sublateral spots on tergites 
1-3, often uniting to form a single area, and a row of small median triangles of 
vellowish hair; venter mostly black, with more or less yellowish basally and 
with hind margins of sternites with narrow bands of pale pollen and pile. 
Male.—Eye densely brown pilose; large and small facets not greatly differing 
in size and the areas not sharply differentiated. Subcallus protuberant, with 
gray pollen. Otherwise as in female, but with more yellow brown on abdomen. 
Type.—Male, in the Museum of Comparative Zoology, Cambridge, 
Mass. 
Type locality—Merchantville, N. J. 
Distribution—Southern shore of Lake Ontario; Atlantic coast 
from Massachusetts to Florida. May 27 (Dismal Swamp, Va.) to 
July 20 (Marblehead, Mass.). In the United States National Mu- 
seum, nine females, nine males. 
TABANUS HINEI variety WRIGHTI Whitney 
Tabanus wrighti Whitney, Canad. Ent. 47: 380-881, 1915; Bequaert, Boston Soc. 
Nat. Hist. Oecas. Papers 8: 87-88, 19338. 
Female.—This variety differs from the typical wrighti in that the antenna is 
almost entirely black, the wings more extensively infuscated and darker, and 
the yellowish spots on the abdomen much reduced. ‘The writer does not believe 
that it deserves more than varietal status. 
Type.—Female, Museum of Comparative Zoology No. 17061. Para- 
type females, Museum of Comparative Zoology No. 17061. 
Type locality —West Palm Beach, Fla. 
Distribution—North Carolina to Florida. May (West Palm 
Beach, Fla.) to June 2 (Dare County, N. C.). 
TABANUS CINCTUS Fabricius 
(Fig. 59, A) 
T'abanus cinctus Fabricius, Entomologia Systematica, v. 4, p. 366, 1794; Wiede- 
mann, Diptera Exotica, pt. 1, p. 67, 1821; Meigen, Systematische Beschrei- 
bung der bekannten europaischen zweifligeligen Insekten, v. 2, p. 42, 1820; 
Harris, A Treatise on Some of the Insects Injurious to Vegetation, new ed., 
p. 602, fig. 261, 1862; Osten Sacken, Mem. Boston Soc. Nat. Hist. 2 (pt. 4, 
No. 4) : 464, 1876; Philip, Minn. Agr. Expt. Sta. Tech. Bul. 80: 104, 1931. 
Dasyommia cincta Enderlein, Mitt. Zool. Mus. Berlin 10: 346, 1922; 11: 349, 1925; 
Krober, Zool. Anz. 838: 57-58, 1929. 
Rather large; black, with a broad band of orange across base of abdomen. 
Female.—Length 19-22 mm. Eye bare or with very sparse pile, deep purple, 
with four bluish-green bands. Frons brown, about four times as high as width 
at base, slightly widened above, with black hair; basal callus subquadrate, not 
quite touching eyes, dark orange-brown to black; median callus black, rather 
broad; vertex with a black triangle on which are situated three longitudinally 
elongate, reddish-brown, ocellus-like protuberances; subeallus denuded medianly, 
orange brown, with a narrow border of brown pollen. Antenna orange brown, 
the annulate portion often black; first two segments with black hair, the first 
not enlarged; basal portion of third with a short but prominent dorsai angle 
near base, beyond base of which the dorsal surface is only slightly excised ; 
annulate portion considerably shorter than basal portion. Clypeus and genae 
brown, with dark-brown to black hair, particularly around oral margin. Second 
palpal segment black, moderately elongate and slender, with blunt apex. 
