lxvi Mr. F. Walker's 



size towards the inner fore border : sucker black ; lancets ferruginous ; palpi tawny, 

 thickly clothed with very short black hairs: feelers ferruginous; first and second 

 joints tipped with black; third joint angular beneath, armed above with a very broad, 

 rather short horn, whose angle is acute ; compound joint hardly curved upward, about 

 half the length of the third joint : sides of the chest ferruginous : breast clothed with 

 pale yellow hairs : abdomen ferruginous, obconical, paler beneath, thinly clothed with 

 short black hairs ; a slight gray stripe along the back: legs ferruginous; hips and 

 thighs tinged with gray, clothed with tawny hairs ; shanks and feet clothed with very 

 short black hairs ; feet pitchy ; claws and fore feet black : wings gray, clouded with 

 yellowish brown at the base, beneath the fore border and along the veins ; brands 

 brown ; wing-ribs ferruginous ; veins black, ferruginous at the base ; curve of the tip 

 cross-vein inclining to an obtuse angle ; scales gray, with tawny borders ; poisers fer- 

 ruginous, with yellow knobs. Length of the body 1 1 lines ; of the wings 22 lines. 

 Para. 



Tab an us albo-axer, fern. 



Niger, albo-hirlus, capile albo, thoracis lateribus ferrugineis, pectore cano, abdomine 

 fasciculis albis trivittato, antennis pedibusque nigris, alls cinereis. 



Body black : head white, thickly clothed beneath with white hairs ; a black ridge 

 along the crown : eyes brassy, parted above by an unusually narrow interval ; facets 

 very small, increasing in size towards the inner fore border : sucker black ; lancets 

 ferruginous ; palpi tawny, clothed with very short black hairs : feelers black ; first 

 joint clothed with short black hairs ; third joint slightly convex beneath, armed above 

 with a short stout horn, whose angle is acute ; compound joint slightly curved upward, 

 much shorter than the third joint: chest tinged with gray, dark ferruginous on each 

 side ; breast hoary, clothed with white hairs : abdomen obconical, longer than the 

 chest, adorned above with tufts of white hairs, which form three rows of spots ; the 

 side spots are on the fore borders, the middle spots on the hind borders of the seg- 

 ments ; under-side gray, clothed with black hairs ; hind borders of the segments 

 white, clothed with white hairs ; claws ferruginous, with black tips ; foot-cushions 

 tawny : wings gray ; brands yellowish brown ; wing-ribs pitchy ; veins black, pitchy 

 at the base and beneath the fore border ; curve of the tip cross-vein inclining to a 

 very obtuse angle ; scales gray, with pitchy borders ; poisers tawny. Length of the 

 body 9 lines ; of the wings 18 lines. 



Para. 



Tabanus viridi-flavus, fern. 



Viridi -flams, abdominis apice fulvo, antennis fulvis basi flavis, pedibus viridi- 

 flavis, alis albidis. 



Body whitish yellow, tinged with bright pale green, thick and convex like T. ma- 

 culatissimus and T. ochroleucus : head clothed beneath with pale yellow hairs : eyes 

 red, parted by a narrow interval on the crown ; the facets larger than usual, especially 

 towards the inner fore border : sucker tawny, ferruginous towards the tip ; lancets 

 bright emerald green ; palpi yellow, clothed with short pale hairs : feelers tawny ; 

 first and second joints yellow; third joint very convex beneath, its angle above shal- 



J 



