Dec., 1907.] 
New North American Tabanidae. 
229 
black, legs black, wings with costal and first basal cells, cross¬ 
band and apical spot black, otherwise hyaline. The crossband 
hardly reaches the posterior margin but comes nearest to it in 
the fourth posterior cell; the apical spot fills out nearly half of 
the second submarginal cell and is entirely separated from the 
crossband. Abdomen entirely black above and below. 
Female from Raleigh, North Carolina, collected by C. S. 
Brimley, April 18, 1906. Entirely distinct from the species of 
Nearctic Chyrsops known to me. 
Chrysops dorsovittatus n. sp. Length 7 millimeters. Ground 
color of the face black, undenuded parts covered with yellow 
dust, apical spot of the wing narrowly separated from the cross¬ 
band. Abdomen with a wide middorsal black stripe, and black 
apex. 
Female. Facial, and frontal callosities and vertex shining 
black, cheeks, middle of the face, region surrounding the antennae 
and middle and sides of the front covered with golden yellow 
dust; palpi and proboscis black; first segment of the antenna 
yellowish, slender and slightly longer than the second; second 
and third segments more or less infuscated, third as long as the 
other two. Thorax black, striped with bright yellow, wing 
with costal and first basal cells, crossband and apical spot black, 
apical spot very narrowly separated from the crossband which 
reaches the posterior border, filling out the fourth posterior call. 
Legs largely black, anterior coxae, bases of anterior and middle 
tibiae and all the metatarsi yellow. Abdomen above with the 
sides of the first segment yellow; wide dorsal stripe and apex 
black; a narrow extension of the apical black projects forward 
outside of a yellow space, on each side, to the posterior margin 
of the second segment. 
Male. Colored like the female except that the fifth vein of the 
wing is widely margined with black, which at the base of the 
second basal cell occupies the entire width of this cell. 
A female from Georgia and a male from Florida. The species 
is entirely distinct from other Nearctic species of Chrysops known 
to me. 
Chrysops shermani n. sp. Length 9 to 10 millimeters. Thorax 
black with bright yellow stripes. Black coloring of the wings 
somewhat broken up by lighter areas along the margins of the 
veins. Crossband not reaching the posterior margin of the wing. 
Female. Facial and frontal callosities shining yellow, the 
latter margined with black above, region around the ocelli 
black; palpi yellow, half as long as the proboscis which is black. 
Thorax black with bright yellow stripes, wing with costal margin, 
corssband and apical spot black or dark brown; the coloring of 
the costal and first basal cells is not intense, stigma dark and a 
few small areas beneath it darker than the other parts. To 
