43 



Tabanus PERVAsrs, Fein. 



Pireus, capile anlivn fiilro, ihomve pectiireque riifo-fii.scis, illius villis 

 Iribus obscurioribus, ubdomine glaucescente, anteunis pedibusf/tie 

 nigris, tarsis intermediis basi tibiisque firrugineis, alls cinereis, basi 

 costa venarumque marginibus fuscis. 



Body pitchy : head covered above with bvown 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 l)lack ; 

 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 nnn' 

 the base. Length of the body 9 lines : of the wings 22 lines. 



West Africa. 



Tabanus diurnus, Fem. 



Niger fulvo teclus, abdomine pilis fiilvis triviftato, antennis ferriigineis 

 basi ful vis, pedibus fulvis, tarsis piceis, tibiis anticis apice larsisqxe 

 anticis nigris, alis limpid is. 



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 ; palj)! whitish yellow, clotlied with pale yellow hairs, 

 and with very few short black hairs : feelers bright pale fermginous ; first 

 and second joint tawny, clothed w ith short yellow and black hairs ; an 

 angle beset ivith 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 th;)n the 

 chest, clothed with bright pale tawny hairs vvhich foi-m three indistinct 

 stripes on the back, and are most prevalent on each side ; under side with 



