45 



Tabanus socialis, Fein. 



Cinereiis, pectore cano, ahdomine fcrriKjineo, antennis basi pedibusque 

 fulvis, alls snbcinereis basi et ad costam fulvis. 



Body gray : head brown above, tawny in front, clothed with white 

 hairs beneath : eyes red, parted above by a narrow interval ; all the facets 

 very small : sucker black ; lancets ferruginous ; palpi yellow : feelers dark 

 tawny at the base : a tawny tinge on each side of the chest : breast hoary : 

 abdomen pale ferruginous, obconical, clothed with short tawny hairs, very 

 much longer than the chest: legs tawny ; feet black; foot-cushions pale 

 tawny ; hind shanks clothed with very short black hairs : wings slightly 

 gray, tawny at the base and along three-fourths of the length of the fore 

 border; wing-ribs ferruginous; veins black, ferruginous at the base; a 

 viirve near the base of the lip cross-vein, but no amjle nor stump ; scales dark 

 tawny ; poisers pale ferruginous. Length of the body 8 lines ; of the 

 wings 10 lines. 



Cape. 



Tabanus infans. Fern. 



Niger, capite abdomineque cinereis, abdominis seymentorum maryinibus 

 posticis fulvis, antennis ferruyineis basi fulvis apice niyris, pcdibus 

 niyris, tibiis fulvis, alis subcinercis. 



Body black, tinged with gray : head gray, with a tawny tinge in front, 

 clothed beneath with whitish hairs, adorned above with two black, shining, 

 convex marks, the one slender and forming a ridge, the other round : eyes 

 brassy, parted above by a rather broad interval ; all the facets very small : 

 sucker black ; lancets pale ferruginous ; palpi tawny : feelers taw ny ; third 

 joint ferruginous, oval, zvith no horn ; compound joint black, sUyhtly 

 curved upward, rather shorter than the third joint : abdomen gray, obconi- 

 cal, thinly clothed with short tawny hairs, a little broader and very much 

 longer than the chest; hind borders of the segments tawny : legs tawny, 

 clothed with short black hairs ; thighs and feet black ; four hinder feet 

 tawny towards the base ; fore-shanks black towards the tips ; foot-cushions 

 dark tawny : wings slightly gray ; Itrands brown; wing-ribs ferruginous; 

 veins black ferruginous towards the liasc ; a distinct oblttsv anylc wilh no 



