Descriptions of Diptera. lxix 



ridge on the crown : eyes bronzed, parted above by a moderate interval ; facets as 

 usual : sucker, lancets and palpi black ; palpi tinged with dark tawny, clothed with 

 very short black hairs : feelers black ; first and second joints beset with very short 

 black bristles ; third joint pitchy, slightly convex beneath, armed above with a rather 

 long acute horn ; compound joint tapering, curved upward, more than half the length 

 of the third joint : breast clothed with pale tawny hairs : abdomen obconical, very 

 dark ferruginous, paler beneath, black towards the tip, clothed with short black hairs, 

 much longer than the chest : legs pitchy, clothed with very short black hairs ; hips 

 and thighs black, tinged with gray, clothed with pale tawny hairs ; claws and tips of 

 feet black ; foot-cushions tawny : wings gray, tinged with brown at the base, beneath 

 the fore border and about the brand, which is dark brown ; wing-ribs and veins black ; 

 veins pitchy along the fore border ; curve of tip cross-vein inclining to an obtuse 

 angle ; scales gray, with pitchy borders ; poisers pitchy. Length of the body 8£ lines ; 

 of the wings 16 lines. 

 Para. 



Tabanus desertus, fern. 



Cinereus, thoracis lateribus fulvis, pectore cano, abdomine fusco maculis trigonis 

 fulvis trivittato lateribus ferrugineis ventre fulvo, pedibus fulvis, alis cinereis. 



Body gray : head dark above, white and clothed with white hairs beneath ; a 

 pitchy shining convex mark in front of the crown : eyes bronze-black, parted above by 

 a rather broad interval ; facets as usual : sucker black ; palpi white, clothed with short 

 black hairs ; feelers ferruginous ; first and second joints clothed with short black 

 hairs ; third joint convex beneath, armed above with a very short and obtuse horn ; 

 compound joint tapering, black, curved upward, much shorter than the third joint : 

 sides of the chest dark tawny : breast hoary, clothed with white hairs : abdomen dark 

 brown, much longer than the chest, linear till near the tip, which is rounded, thinly 

 clothed with short pale yellow hairs, which are chiefly on the hind borders of the seg- 

 ments, tawny beneath, somewhat ferruginous on each side above and adorned with 

 three rows of triangular tawny spots ; middle spots paler than the side spots, which 

 are oblique : legs tawny, clothed with very short black hairs ; hips and thighs clothed 

 with hoary hairs ; claws and tips of feet black : wings gray ; brands brown ; wing-ribs 

 pitchy ; veins black, pitchy at the base and along the fore border ; curve of the tip 

 cross-vein slightly inclining to an obtuse angle ; scales gray, with pitchy borders ; 

 poisers tawny. Length of the body 5 lines ; of the wings 10 lines. 



Para. 



Tabanus advena, fern. 



Niger, capite ferrugineo, thoracis lateribus abdomineque fulvis, hujus apice piceo, 

 antennis ferrugineis, pedibus fulvis, tarsis anticis nigris, alis albidis. 



Body black : head ferruginous, golden yellow above the feelers, thinly clothed 

 beneath with pale yellow hairs : eyes red, parted by a moderately broad interval ; the 

 facets as usual : sucker pitchy ; lancets ferruginous ; palpi very pale yellow : feelers 

 bright pale ferruginous ; third joint slightly convex beneath, its upper side forming 

 an extremely shallow and obtuse angle ; compound joint tapering, curved upward, 

 shorter than the third joint : chest and breast thinly clothed with pale yellow hairs ; 



