DIFTERA. 35 



partly clothed with imle yellow hairs : abdomen I'orrugiuous, obconical, 

 pitchy towards the tip, very much longer than the chest : legs ferruginous, 

 clothed with short black hairs : feet black, dark ferruginous towards the 

 base ; foot-cushions tawny ; fore-thighs black ; wings pale gray, with a 

 tawny tinge at the base and beneath the fore border and along the borders 

 of the veins ; wing-ribs ferruginous ; veins black, ferruginous towards the 

 base ; a dislinvt but very obtuse, anyle with no stump near the base of the 

 tip cross-vein ; scales dark tawny, with pitchy borders ; poisers tawny with 

 yellow tips. Length of the body (i lines ; ol the wings 13 lines. 



Columbia. 



Tabanus discifek, Plate 2, lig. 2. 



Feni. Nigrn-cinereus, thoracis laterihus vittisque tribiis ferrugineis, abdo- 

 niine fasciculis albis trivittato, antcnnis nif/ris basi fuliis, pedibus 

 nigris, alis subnigris, basi et ad coslam ferrugineis, cellu/arum discis 

 ap ici basque ci nereis . 



Body black : covering of the head dark tawny above, tawny in front 

 and beneath where it is clothed with pale tawny hairs ; a slender, shining, 

 pitchy ridge along the whole length of the crown : eyes large, bronze, 

 parted above by a very narrow interval ; facets very small, but increasing 

 in size towards the inner fore border: sucker black, clothed with tawny 

 hairs ; lancets pitchy ; palpi dark tawny, thickly clothed with very short 

 black hairs : feelers black, long, first and second joints dark tawny, clothed 

 with black hairs above, with pale tawny hairs beneath ; third joint dark 

 tawny towards the base, its horn very long, curved downward ; compound 

 joint curved upxvard : chest tinged with gray, ferruginous on each side, 

 adorned with three slender ferruginous stripes : breast tinged with grayish- 

 tawny, partly clothed with lawny hairs: abdomen obconical, a little 

 broader and very much longer than the chest ; each side of every segment 

 adorned with a patch of white hairs ; each hinder segment having also a 

 middle patch of more indistinct white hairs : legs black ; thighs clothed 

 with short whitish hairs ; shanks and feet clothed with short black hairs ; 

 feet beneath dark ferniginous ; foot-cushions pale ta\vny: wings blackish, 

 dark ferruginous at the base and along the fore border as far as the brand 

 which is black ; disks of the arccdets and tips gray ; wing-ribs ferruginous ; 

 veins black, ferruginous towards the base and along the fore border; curve 

 i>f the tip cross-vein inclined to an nni/ular form, no stump; scales dark 



