Nineteenth Annual Meetings. 139 



and thus infract two decided laws in zoological nomenclature. I have taken the 

 males in Connecticut several times while feeding on Cirsum. 



Tabanus melanooeeas Wiedemann. 



To a single specimen from Georgia Wiedemann's description a^jplies well, but a 

 number of other specimens from Florida differ in their less hyaline wings, in the 

 presence of small but distinct brownish clouds on the cross-veins, and a dark brown 

 border to the stigma. They would be brought to T. molestus Say by Osten Sacken's 

 table, but that they are not this species is evident from the coarctate first posterior 

 cell and the presence of large-sized triangles on the second abdominal segment. 

 The color of the thoracic dorsum is also often more reddish in the J'lorida speci- 

 mens. 



Tabanus nigbesoens Palisot Beauvois. — ^Virginia. 



Tabnaus a:GBOTus Osten Sacken. 



I have several males and females of this species, from Oregon and California, 

 varying in length from 17 to 23 mm. The head of the male is large and convex, but 

 the large and small facets are not distinctly separated, or very different in size. 



Tabanus punotifeb Osten Sacken. 



All my specimens (California, Washington) of this easily recognizable species 

 have the first posterior cell coarctate, as in some specimens of T. stygius, which I have 

 from as far west as Kansas. 



Tabanus giganteus Degeer. 



This species I observed in extraordinary abundance at Vandalia, 111., in the early 

 part of Septerhber, causing much worry and annoyance to stock in the woodlands. 

 I have it also from Florida. 



Tabanus sodalis, n. sp. 



Female: Length, 15, 16 mm. Brownish black. Abdomen with a single row of 

 conspicuous white triangles; wings without distinct clouds on the cross- veins; third 

 joint of antennae red at the base; first posterior cell not coarctate; eyes bare. 

 Abdomen rather broadly oval; second, third, and fourth segments each with a large 

 white triangle, expanding from a narrow posterior border, largest on the second, the 

 fifth with only a small whitish spot, the first with a small but distinct one. Venter 

 dark brown, broadly whitish pubescent and poUinose on the sides and the narrow 

 posterior borders. Palpi whitish, with minute black and white hairs. Face and 

 front yellowish white, the former with yellowish white pile. Frontal callosity nearly 

 black, squarish, above it, and separated from it, a slender bare spot; front of nearly 

 equal width. Antennae black, the third joint red at the base, the upper angle mod- 

 erately projecting, forming about a right angle, the annulated portion about two- 

 fifths of the entire length. Dorsum of the thorax grayish brownish black, the 

 ante-alar callosity red; pollinose stripes moderately distinct. Legs dark brown or 

 black, the base of the tibiae more or less luteous or reddish. Wings tinged with 

 brownish, more distinctly so in the neigborhood of the stigma. 



This species is nearest related to T. coffeafus, but will be at once distinguished 

 by the presence of four bright green narrow horizontal stripes on the purple back- 

 ground of the eye. From T. molestus and T. trimaculatus the large triangle on the 

 second abdominal segment will readily separate the species. 



Tabanus tub, n.sp. 



Female: Length 17 mm. Abdomen with a single row of white triangles; wing 

 cross-veins distinctly clouded with brown; legs red, the tarsal joints a little darker; 

 angle of third antennal joint not produced. 



