lxviii Mr. F. Walker s 



Tabanus vagus, fern. 



Fulvus, thorace trivittato, abdomine antennisque ferrugineis, pedibus fulvis, tarsis 

 ferrugineis, alis fuscis apiee margineque postico cinereis. 



An aberrant species. Head dull tawny on the crown, bright tawny in front, 

 whitish yellow and clothed with pale yellow hairs beneath : a shining ferruginous 

 ridge on the crown, wider in front : eyes coppery, parted above by a narrow interval ; 

 the facets as usual : sucker pitchy ; lancets pale ferruginous ; palpi tawny, clothed 

 with very short black hairs : feelers pale ferruginous ; third joint slightly angular be- 

 neath, armed above with a very small and short acute horn, whose tip is beset with 

 little black bristles : chest dark tawny, with three rather indistinct stripes : breast 

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

 near twice the length of the chest : legs tawny, clothed with very short black hairs ; 

 hips and thighs clothed with pale yellow hairs ; feet ferruginous, black towards the 

 tips; foot-cushions tawny: wings brown, inclining to gray at the tips and along the 

 hind borders ; wing-ribs ferruginous ; veins pitchy, ferruginous at the base ; angle of 

 the tip cross-vein very distinct, slightly obtuse, its stump much shorter than the inner 

 side ; scales ferruginous ; poisers tawny, with yellow knobs. Length of the body 

 6 lines ; of the wings 13 lines. 



Hong-Kong. 



Tabanus basi-vitta, fern. 



Fuscus, pectore cinereo, abdomine ferrugineo basi nigro vittato, antennis ferrugineis 

 basi fulvis, pedibus ferrugineis, tarsis nigris, alis cinereis basi costaque fuscis. 



Covering of the head dark tawny above, paler in front and beneath, where it is 

 clothed with short black hairs ; a pitchy ridge along the crown ; eyes bronzed, parted 

 above by a moderate interval ; facets as usual : sucker black ; lancets ferruginous ; 

 palpi tawny, rather long, thickly clothed above with short black hairs : feelers ferru- 

 ginous ; first and second joints dark tawny ; third joint slightly convex beneath, 

 armed above with a moderately long and very acute horn ; compound joint tapering, 

 curved upward, rather more than half the length of the third joint: chest brown, 

 clothed with short ferruginous hairs : breast gray, clothed with short black hairs : ab- 

 domen ferruginous, obconical, darker towards the tip, nearly twice the length of the 

 chest, clothed with very short black hairs, adorned above at the base with a very short 

 black stripe : legs very dark ferruginous, clothed with short black hairs ; feet black ; 

 foot-cushions tawny : wings gray, tinged with brown at the base and along the fore 

 border ; brands dark brown ; wing-ribs pitchy ; veins black, pitchy at the base and 

 beneath the fore border ; scales gray, with pitchy borders ; poisers ferruginous, with 

 yellow knobs. Length of the body 7% lines ; of the wings 14 lines. 



Para. 



Tabanus viduus, fern. 



Cinereus, abdomine ferrugineo apice nigro, palpis antennisque nigris horum articulo 

 3° piceo, pedibus piceis, femoribus nigris, alis cinereis basi et ad costam fuscis. 



Body gray : head dark grayish tawny above, hoary and clothed with short hoary 

 hairs beneath ; a fringe of very short black bristles behind the eyes ; a pitchy narrow 



