OF THE TABAXID.E OF THE UNITED STATES. 451 



nearly jiavallol ; callosity black, ■with an indii^tinct prolongation above ; antenna^ reddish, 

 annulate portion of the third joint black, nearly as long as the body of the joint ; the latter 

 somewhat liroad, with a distinctly projecting upper angle. Thorax grayish yellow (a gray 

 ground color being clothed with golden A'ellow hairs). Abdomen with a consjiicuous longi- 

 tudinal' j'ellowish white stripe in the middle, somewhat expanded at each incisure, and two 

 lateral stripes, very much attenuated posteriorly, and formed of a series of oblique, almost 

 coalescent spots, one on each segment ; the intervals between the central and the lateral 

 stripes are black (which color thus foi'ms two distinct, well mai'ked, nearly parallel stripes, 

 enclosing on both sides the central pale stripe) ; the two lateral stripes are bordered on the 

 outside by a second pair of more or less distinct black stripes, formed by a series of black 

 oblique spots, one on each segment ; when these spots are less distinct, the lateral pale 

 stripes almost coalesce with the reddish yellow lateral margins of the abdomen ; on seg- 

 ments five and six the Ijlack prevails, Imt in well preserved specimens both central and lat- 

 eral stripes are still visible. All the pale colored portions of the alnlomen show, imder the 

 magnifying glass, a dense covering of golden hairs. Venter reddish yellow, mixed with 

 blackish, especiallj' towards the tip, both coloi's being softened by a dense covering of 3x4- 

 lowish hairs. Legs black ; front tibia) yellowish at base, four posterior tibiie A-ellow, except 

 the tip, which is black ; femora clothed with a dense yellowish gray pollen. Wings grayish 

 hyaline ; costal cell with a distinct Ijrownish yellow tinge ; first posterior cell broadly open. 



Male. The black abdouiinal stripes are usually less dark, and hence, less well defined ; 

 especially the base and sides of the abdomen are usually more reddish. Length, 10-13 mm. 



Ilalj. A common species in the Middle and Western States; according to Bellardi, also 

 in Mexico. 



I have seen specimens from Florida ( Lake ITarney, May 5 ; Messrs. Hubbard and Schwarz), 

 very small (9-10 mm.), and very like T. nigroviftafus in appearance ; nevertheless I would 

 rather refer them to 2\ costalis. One of them had the third antcnnal joiut entii'ely black. 



Tlie eyes of the female are light green, with a single purple crossband in the middle. 



I accept the traditional and very probable interpretation of Wiedemann's description of 

 the male, although, taken literally, it would render the identification doubtful. I am not 

 sui'e about the interpretation of Mr. Bellardi's description. 



T. vicarius Walker is most probably this species; perhaps also T. haltimorensis Macq. 



26. Tabanus fulvulus. 



Tahanns fulvidus Wiedemann, Anss. Z\v., I, p. 153, 66. 



Hale and female. Front and vertex clothed with grayish fulvous pollen ; callosity ( 5 ) 

 nearly square, brownish or blackish ; above it, but not connected with it, is a short, stout, 

 smooth line of the same color ; face and cheeks whitish (see the observation at the end) ; 

 palpi ( $ ) rather stout, pale yellowish white, with blackish hairs ; in the male they are 

 whitish ; antennte : first joint reddish yellow, with black hair ; third joint red ; its upper 

 angle well marked and projecting, its annulate portion black or brown, much shorter than 

 the remaining portion of the joint ; (in my only male specimen the third joint is alto- 

 gether red, perhaps not fully colored). Thorax and scutellum yellowish fulvous above, 

 with golden hairs, mixed with Ijlack ones (in coloring and appearance the thorax resembles 



