OF THE TABANID.E OF THE UNITED STATES. 463 



under the wings. Abdomen black, thinly clothed with pale golden yellow hairs, which are 

 more dense along the hind margins of the segments, Avhere they form narrow, but conspic- 

 uous pale golden yellow fringes. Venter black; hind margins of segments likewise fringed 

 Avith pale yellow hairs. Front femora black, reddish at tip ; front tibiaj reddi.sh yellow, 

 blackish at tip ; front tarsi black ; four posterior femora black on the proximal half only ; 

 the remainder, as well as the tibiae and tarsi, reddish yellow. Wings tinged with brownish, 

 brownifi^h ferruginous along the costa. Length, 14-17 mm. 



Hob. Labrador (Dumplin Harbor, July 19, common, A. S. Packard). Wiedemann's 

 specimens were from the same country. I have six females. 



Among Mr. Packard's specimens from Straits of Belle Isle, I find a male, which aj^parently 

 belongs here. The sides of the second abdominal segment are reddish. The head is mod- 

 erately large, and the difference between the large and small facets well marked, although 

 not very considerable. 



According to Wiedemann, this species is very like the European T. cmr'ipihis Meig. 



There is a superficial resemblance between this species and T. zonaVts ; they are easily 

 distinguished, however, by the much broader yellow borders of the abdominal segments 

 and the reddish antealar tubercles of T. zonalis. The front of T. Jlavipes is broader, the 

 palpi narrower, etc. 



44. Tabanus zonalis. 



Tahanus zonalis Kirby, Fjxun.a Boreiili-Americana, IV, p. 314, 2. 

 Ihhcmiis tarancU Walker, List, etc., I, p. 150 ; female. 

 lYibanns terrce novce Mafcpiart, Dipt. Exot., i' Suppl., p. 39, 109. 



Female. Eyes pubescent ; third joint of antenna3 red, more or less black at tip (some- 

 times the annulate portion alone is black, sometimes this color extends beyond it), dis- 

 tinctl}- excised above, with a jn'ojecting upper angle ; face and front clothed with a golden 

 yellow (in some cases whitish yellow) pollen; cheeks with fulvous and black hairs; frontal 

 callosity black, nearly square, with a spindle-shaped, often disconnected line above ; vertex 

 black; palpi brown, densely clothed with black hair. Thorax black, antealar tubercle red- 

 dish. Abdomen black, hind margin of all segments with a broad yellow border, formed by 

 yellow pollen, clothed with golden yellow hairs; on the second, and sometimes on the third 

 segments, this Isorder has, anteriorly, a shallow excision, bounded on each side by a pointed 

 projection ; venter black, the hind margins of the segments also bordered with yellow. 

 Femora black, reddish at the tijD ; tibiaj and tarsi reddish yellow; front tibiic at the tip, and 

 front tarsi, black ; hind tibife with a distinct fringe of reddish hair. Wings tinged with 

 brownish; ferruginous brownish along the costa. Length, 17-18 mm. 



Hab. Has a wide distribution in the northern regions of North America ; Maine (Fer- 

 nal) ; northwestern parts of the Hudson's Bay Territory (R. Kennicott) ; Saskatchewan 

 River (Scudder); Washington Territory (G. Gibbs); Labrador (Packard); Canada (Quebec, 

 Belanger) ; Anticosti (Verrill) ; St. Martin's Falls, Albany River, Hudson's Bay (Walker); 

 Newfoundland (Walker and Macquart). I compare twenty-four female specimens. 



In old and worn specimens the yellow portions of the body appear more whitish. The 

 typical specimen described by Kirby must have been in that condition, as appears from his 

 description. The mention of the reddish antealar callosity, as well as the measurement 



