DIPTERA. 37 
Tapanus rrirascia, Mas. 
Niger, thoracis lateribus fulvo unimaculatis, abdomine piceo basi ferrugi- 
neo, vitta et segmentorum marginibus posticis fulvis, antennis ferru- 
gineis basi fulvis, pedibus nigris, tibiis fulvis, alis cinereis basi et ad 
costam fulvis. 
Body black: head thinly clothed beneath with pale yellow hairs : 
eyes divided into two distinct regions ; upper region dark red, composed 
of very large facets, occupying most of the surface ; fore region small, 
pitchy, composed of very small facets, confined to the sides of the eyes with 
the exception of a narrow band along the hind border: sucker deep black ; 
palpi yellow, clothed with pale yellow hairs, and towards the tip with black 
hairs: feelers pale ferruginous ; first and second joints tawny, clothed with 
short black hairs ; third with a slight protuberance but no horn; compound 
joint very slightly curved: chest and breast thinly clothed with short 
tawny hairs; a dark tawny spot on each side at the base of the wing : ab- 
domen pitchy, obconical, a little narrower and very much longer than the 
chest, clothed with a few tawny hairs, ferruginous towards the base, adorned 
with a bright tawny stripe, which disappears near the base and the tip; 
hind borders of the segments tawny: legs black, clothed with short black 
hairs; shanks tawny with black tips ; tips of the thighs tawny ; feet tawny 
at the base; foot-cushions dark tawny; hind-thighs and fore-feet quite 
black ; fore-shanks tawny for half the length from the base, black thence 
to the tips: wings gray, dark tawny at the base and along the fore border; 
wing-ribs ferruginous ; veins black, ferruginous towards the base ; angle of 
tip cross-vein slightly obtuse, stump of moderate length ; brand yellowish 
brown; scales tawny ; poisers pitchy. Length of the body 4% lines; of 
the wings 9 lines. 
Brazil. 
TABANUs LizIerosus, Mas et Fem. 
Ferrugineus, aut fulvus, flavo varius, antennis fulvis apice piceis, pedibus 
fulvis, alis fuscis fulvo maculatis, marginibus posticis cinereis. 
Male. Body ferruginous: head light yellow in front, clothed with pale 
yellow hairs beneath: eyes very large ; upper region pale brassy red, com- 
posed of very large facets; fore region dark, red, small, confined to the 
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