OF THE TABAXID^ OF THE UNITED STATES. 465 



ish gray, with a broad blackish longitudinal stripe in the middle. Legs black ; proximal 

 half of the tibiaj more or less reddish brown. Wings tinged with brownish gray ; a shade 

 of brownish runs from the stigma across the central crossveins ; costal and basal cells also 

 with a faint brownish tinge ; first posterior cell open. 



Male. Much darker in coloring than the female. Head of moderate size ; the demarca- 

 tion Ijetween the large and small facets is hai'dly visible, as these facets differ in size but 

 very little. Thorax black, beset with black hair ; anteriorly some grayish pollen and 3'el- 

 lowish hair ; longitudinal stripes obsolete ; antealar tubercle dark reddish ; pleurte beset 

 with yellowish hairs, and with blackish ones in the middle ; abdomen black, often dark 

 brown on the sides of the second and third segments ; white triangles on segments two and 

 three very distinct, silvery white, that on segment four smaller, often subobsolete ; the 

 hind raarffins of the segments have no fringe of white hair, but a narrow border of whitish 

 pollen is visible m a certain light. Venter black or brown ; hind margins of segments 

 white. Wings with a Ijrownish tinge, somewhat more saturate than in the female. Length, 

 14-15 mm. 



Ilah. New England (Cambridge, Mass., in Jul}-, AVhite Mountains, July 13, S. H. Scud- 

 der; Southington, Conn., July, W. H. Patton) ; Illinois; New York; also Middle States 

 (Am. Ent. Soc). I have three males and seven females before me. 



The eyes are pubescent; in the female, however, the pubescence is very difficult to per- 

 ceive. The e\'es of the female show four bright green stripes, with purple intervals of 

 nearly the same breadth. 



I had some doul^ts about the identification of this species with the T. trlspllus of Wiede- 

 mann ; first, because he does not mention that the eyes ar« pubescent, although he had a 

 male specimen, in which his pubescence is usually very distinct ; secondly, because he calls 

 the pubescence on the cheeks brownish, while it is yellowish gray. Through Dr. Rcdten- 

 bacher's kindness I have been able to remove these doubts. He has caused Wiedemann's 

 type in the Vienna Museum to be examined, and informs me that it has distinctly pubes- 

 cent eyes, and that the hairs on the cheeks are grayish, and not brownish. 



47. Tabanus lasiophthalmus. 



Tahanus lasioplifhalmits Macqnavt, Dijit. Exot., I, 1, p. 143, 45. 

 Tabanus notabiiis Walker, List., etc., I, p. 1G6. 



Female. Ej-es pubescent; face yellowish white, with hair of the same color; palpi 

 rather stout, whitish yellow, with white and more or less black hair ; front rather broad, 

 slightly converging anteriorly, yellowish gray, mixed with brown, and with short Idack 

 pile; frontal callosity black ; below it the subcallus is usually bare, black, shining ; above 

 the callosity a small, denuded blackish spot, usuall}' disconnected from it, and surrounded 

 with a brownish shade ; ocellar tubercle very distinct, a brownish shade around it ; antennse 

 reddish, more or less black at the tip of the third joint, the latter with a projecting, nearly 

 rectangular, upper angle. Thorax grajish black, with a shade of brown ; the usual longi- 

 tudinal grayish lines, in well preserved specimens, are beset with fulvous hair ; antealar 

 tubercle somewhat reddisli ; pleurai gray, with whitish hair. Abdomen brownish black in 

 the middle, yellowish or reddish brown on the sides ; large oblique yellowish white lateral 



MEMOIRS BOST. SOC. yAT. HIST. VOL II. 117 



