DIPTERA. 43 
Tapanus pervasus, Fem. 
Piceus, capite antico fulvo, thorace pectoreque rufo-fuscis, illius vittis 
tribus obscuriovibus, abdomine glaucescente, antennis pedibusque 
nigris, tarsis intermediis basi tibiisque ferrugineis, alis cinereis, basi 
costa venarumque marginibus fuscis. 
Body pitchy: head covered above with brown down, dark tawny and 
clothed with tawny hairs in front: eyes brassy, large, separated by a very 
narrow interval on the crown; all the facets very small: sucker black ; 
palpi dark tawny: feelers black ; first joint very oblique at the tip ; horn of 
the third joint short: chest and breast dark reddish brown: chest with 
three slender indistinct darker stripes: abdomen obconical, covered with 
a bluish gray bloom, much longer than the chest: legs black ; shanks fer- 
ruginous, with black tips; hind-shanks fringed with short black hairs ; 
middle-feet ferruginous at the base ; foot-cushions tawny: wings gray, 
brown at the base and along the fore borders till near the tips, and on the 
borders of the veins in the disk ; scales blackish; poisers pitchy with pale 
yellow knobs ; tip cross-vein forming an obtuse angle, without a stump near 
the base. Length of the body 9 lines; of the wings 22 lines. 
West Africa. 
TABANUS DIURNUS, Fem. 
Niger fulvo tectus, abdomine pilis fulvis trivittato, antennis ferrugineis 
basi fulvis, pedibus fulvis, tarsis piceis, tibiis anticis apice tarsisque 
anticis nigris, alis limpidis. 
Body black: head tinged with tawny, hoary behind and beneath 
where it is clothed with yellow hairs: eyes red, parted above by a mode- 
rately broad interval, brightest in front; all the facets very small: sucker 
black; lancets tawny ; palpi whitish yellow, clothed with pale yellow hairs, 
and with very few short black hairs: feelers bright pale ferruginous ; first 
and second joint tawny, clothed with short yellow and black hairs; an 
angle beset with a few very short black bristles near the base of the third joint : 
chest and breast adorned with a grayish tawny covering, clothed on each 
~ side with yellow hairs: abdomen slightly obconical, much longer than the 
chest, clothed with bright pale tawny hairs which form three indistinct 
stripes on the back, and are most prevalent on each side ; under side with 
2 
