HORSEFLIHS OF THE SUBFAMILY TABANINAE 93 
wide, somewhat narrower than frons, very dark brown; median callus usually 
a rather stout line, connected to basal callus; subcallus, clypeus, and genae with 
brown pollen, the subcallus paler; hair of clypeus and genae dark brown to 
black. First two antennal segments black; third reddish at base, dark brown 
to black apically ; dorsal angle moderate, rectangular; annulate portion slightly 
shorter than basal portion. 
Thorax and abdomen nearly black, with black hair. Legs black. Wing with 
costal cell strongly infuscated and with discal cell and base somewhat clouded ; 
spots at cross veins and furcation ; cell Rs decidedly narrowed apically. 
Male.—Areas of large and smail facets of eye sharply differentiated. General 
color browner than female, particularly on mesoscutum. 
Type.—Female, collection unknown. 
Type locality —United States. 
Distribution—Massachusetts and Indiana to Florida. May 25 
(Murrells Inlet, S. C.) to August 7 (Nelson County, Va.). In United 
States National Museum, 22 females, 1 male. 
TABANUS NIGRESCENS variety ATRIPENNIS Stone 
Tabanus nigrescens subspecies atripennis Stone, Ent. Soc. Wash. Proc. 37: 15-16, 
1935. 
Female and male.—Length 24-26 mm. Wing deeply smoky, only slightly 
paler posteriorly, if at all. 
Type.—A female, United States National Museum No. 50619. Para- 
types, United States National Museum No, 50619; other paratypes in 
collections of Ohio State University and James M. Brennan. 
Type locality —Stillwater, Okla. 
Distribution—Maryland to Florida and Texas. June 7 (Monti- 
cello, Fla.) to July 20 (Doncaster, Md.). 
TABANUS PUNCTIFER Osten Sacken 
(Fig. 40) 
Tabanus punctifer Osten Sacken, Mem. Boston Soc. Nat. Hist. 2 (pt. 4, No. 4): 
453-454, 1876; Hine, Ohio Nat. 5: 242, 1904; Webb and Wells, U. S. Dept. 
Agr., Dept. Bull. 1218: 10-20, 1924; Herms, Pan-Pacific Ent. 4: 91-92, 
1927; Rowe and Knowlton, Canad. Ent. 67: 2438, 1935. 
Figure 40.—Antenna, front view of head, and palpus of Tabanus pwnctifer. 
Rather large; thorax cream colored and abdomen black; a brown spot at 
furecation ; fore tibia bicolored. 
Female.—Lenth 19-22 mm. Eye bare, greenish, with three narrow purple 
bands. Frons brownish gray, two and one-half to three times as high as 
width at base, with parallel sides; basal callus dark brown to black, sub- 
quadrate, poorly defined, the median callus even less sharply defined; subcallus 
brown, bare or sparsely covered with brown pollen. First two antennal seg- 
ments black; third usually very dark brown, with distinct dorsal angle and 
excision; length of annulate portion about midway between width and length 
of basal portion. Clypeus and genae brown, with dark-brown hair. Second 
palpal segment moderately elongate, dark brown, with abundant, short, black 
hair. 
