HORSEFLIES OF THE SUBFAMILY TABANINAE 89 
little doubt, a synonym. (New synonymy.) It is rather doubtful 
that satanas, the genotype of Astigmatophthalmus Krober, can be 
considered generically distinct from atratus. 
TABANUS ATRATUS variety FULVOPILOSUS Johnson 
Tabanus atratus var. fulvopiissus Johnson, Psyche 26: 164, 1919. 
Female.—Differs from the typical atraius only in the presence of bright- 
yellow hair on the upper half of the prescutal lobe, a streak above the wing 
base, and a tuft on the postalar lobe. 
Male.—Unknown. 
Type.—A female bearing type No. 7509 in the Museum of Com- 
parative Zoology, herein designated as lectotype. This is one of 
three specimens labelled cotype, none bearing data to correspond 
with those mentioned in the original description. 
Type locality.—Orlando, Fla. 
Distribution.—Massachusetts to Florida on coast. March 12 (Haul- 
over, Fla.), to September 17 (Pawley’s Island, S. C.). In the 
United States National Museum, 16 females. 
TABANUS ATRATUS variety NANTUCKENSIS Hine 
Tabanus nantuckensis Hine, Ohio Jour. Sci. 17: 271, 1917. 
Tabanus atratus var. nantuckensis Johnson, Psyche 26: 163-164, 1919. 
Female and male.—Differs from the typical atratus in its somewhat smaller 
size (20-22 mm) and in the distinct yellowish tinge to the hind part of the 
wing. 
Type.—Female, Ohio State University. 
Type locality —Nantucket Island, Mass. 
Distribution—New Hampshire to New York, on coast. June 19 
to August 20 (Dorchester, Mass.). In the United States National 
Museum, three females, three males. 
In addition to these varieties the writer has seen specimens from 
Cambridge, Lexington, Nantucket, Malden, Dorchester, and Marble- 
head, Mass., with the thoracic coloration of fulvopilosus and the 
wing coloration of nantuckensis. 
TABANUS MORBOSUS, new species 
(Fig. 36) 
Rather large; black; wing subhyaline, the costal cell and margin of veins 
of basal and central portion of wing brown; frons very narrow. 
ny 
FicuRE 386.—Antenna, front view of head, and palpus of Tabanus morbosus. 
Female.—Length 21 mm. Eye bare. Frons brown, six and six-tenths times 
as high as width at base and somewhat widened above; vertex partially de- 
nuded, with a small notch and trace of an ocellar tubercle; basal callus small, 
black, rather widely separated from eyes and forming a swelling at base of a 
