206 THE CANADIAN ENTOMOLOGIST. 



Wings : first basal cell completely infuscated, except a small apical 

 hyaline spot contiguous to a basal one in the discal cell. The second 

 basal cell is hyaline, except a slight proximal infuscation. The crossband 

 reaches the hind margin, completely filling the fourth posterior cell. The 

 fifth posterior cell is entirely hyaline, except for a slight but distinct cloud 

 near the tip of the fifth vein, and which occasionally extends up the vein 

 as a very faint shade. The hyaline triangle seldom reaches the second 

 longitudinal vein and is broad and blunt at its extremity. The apical 

 spot nearly fills the second submarginal cell and crosses the first posterior 

 at its extremity. 



Eleven females, collected by Mr. G. M. Dodge in Pike Co., Mo. 

 One specimen has the front and dorsum of thorax dense black. 



This species resembles sequax, Will., but the latter has the hyaline 

 triangle narrower, arcuated, owing to the convex distal margin of the 

 crossband, and it crosses the second vein. , 



Tabanus benedictns, n. sp. — 9 • Length, 23-25 mm. Palpi slender, 

 dark brown with appressed black hairs. Two basal joints of antennae 

 dark brown, third joint fulvous, the angle prominent. Eyes revived by 

 moisture, purple, with two green bands. Front narrow, distinctly 

 contracted anteriorly, dark brown ; callus brown, twice as long as wide, 

 with a fusiform prolongation above. Subcallus and face covered with 

 dense yellow pollen. Thorax dark reddish-brown with a faint whitish 

 median line. Abdomen black, pruinose. Legs black, base of tibite dark 

 reddish. Wings fuliginous ; base, costal cell and stigma fulvou?, brown 

 clouds upon cross-veins and divarication of third vein. First posterior 

 cell closed or nearly so. 



Five females, Mr. G. M. Dodge, Pike Co., Mo., August. 



This species may be easily recognized by its peculiar abdomen, 

 which resembles that of atraius, F., its narrow front and closed first 

 posterior cell. 



Tabanus ( Theviopledes) typhus, n. sp. — ?. Length, 11 -13 mm. 

 Palpi yellow, long and tapering, with white and black hairs. Face and 

 cheeks grayish, covered with white pollen and long white hairs. Antennas 

 fulvous; first two joints with black hairs, third joint with upper angle 

 obtuse, the concave upper margin sometimes infuscated, the annular tip 

 black. Eves purple, with the green bands common to the subgenus. 

 Front broad, whitish-gray, slightly contracted anteriorly, callus castaneous, 



