SPECIES OF TABANUS—PART I. 287 
facets, which even in dried specimens differ in colour from the remainder, 
the fusiform area being usually paler (drab-grey or smoke-grey, fawn-coloured, 
or chocolate), margined with dark brown, and marked with a curved transverse 
band of dark brown, which extends almost from end to end of the area ; longer 
hair on eyes confined to fusiform area, below which the hair is so short and sparse 
as to be searcely noticeable under a hand-lens magnifying 15 diameters (nominal) ; 
proximal joint of palpi mouse-grey (cream-buft at extreme tip), clothed with 
whitish hair, distal joint cream-coloured, oval or short ovate, clothed with long, 
outstanding whitish hair, mixed at and near tip of joint with minute black hairs ; 
antennae small, first and second joints smoke-grey, upper distal angle of first 
joint considerably developed, prominent, and clothed with minute black hairs or 
bristles, third joint ochraceous-buff (terminal annulus dark brown), expanded 
portion viewed from side fairly broad, its upper margin produced into a prominent 
angle at about its middle point, the four distal annuli slender and together 
approximately equal to the expanded portion of the third joint in length. 
Thorax: ground colour blackish slate, pleurae and pectus light grey pollinose, 
swelling occupying depression at each end of transverse suture greyish fawn- 
coloured or smoke-grey, and clothed partly with blackish partly with greyish 
hair; dorsum longitudinally striped with grey, as in © (see fig. 2), and 
clothed with fine, silky; erect, yellowish hair, mixed with fine blackish hair, 
pleurae and pectus clothed with outstanding greyish white hair. Abdomen 
narrow and elongate, gradually tapering to a point; dorsum marked as in Q, 
the elongate marks forming the dark stripes clothed with fine black hair, 
the intervening light grey stripes clothed with fine cream-coloured hair, sides 
of dorsum clothed with long, fine, whitish hair; venter dark grey, covered with 
light grey pollen, and clothed (except last two segments, which bear coarse, erect, 
black hairs) with whitish hair ; hind borders of ventral scutes of second to sixth 
segments inclusive cream-buff ; ventral scutes of second and third, or second, 
third, and fourth segments sometimes each with a more or less indistinct, 
elongate, greyish fawn-coloured area near lateral margin on each side. Wings 
hyaline, veins for most part mummy-brown ; stigma so pale as to be inconspicuous. 
Squamae semi-opaque waxen-white, borders cream-buft. Halteres cream-coloured. 
Legs : coxae grey, clothed with whitish hair; femora grey, at least at base, often 
more or less greyish ochraceous-buff at and towards distal extremities, clothed 
below and posteriorly with long, whitish hair; tibiae greyish ochraceous-butt 
(anterior surface of front pair sometimes mainly mouse-grey or dark grey), tips 
of middle and hind pairs usually brownish or dark brown, all tibiae clothed on 
anterior, upper, and posterior surfaces with minute, appressed, silvery hairs, 
which on upper surface are mixed with minute black hairs ; front tibiae sparsely 
fringed antero-exteriorly with longer black hairs mixed with similar whitish 
hairs, middle tibiae with a loose, irregular fringe of fine, whitish hairs, on outer 
and inner surfaces, hind tibiae densely fringed on both inner and outer sides with 
long, fine, silvery-white hair, the fringe on the inside being the longer, and that 
on the outside mixed with a certain number of fine black hairs ; tarsi dark brown 
(first joint of middle and hind pairs sometimes more or less ochraceous-buff, 
except at distal extremity), clothed above with minute, appressed, silvery white 
