1010 LIST OF DIPTERA. 



Trypeta Alcinoe, n. s., mas. Fulva, abdomine nigro, palpis anten- 

 nis pedibusque fulvis, femoribus flavis, tarsis apice fuscis, alis 

 fusco trifasciatis. 

 Body tawny, smooth, shining, long and narrow, beset with a 

 few black bristles : head yellow beneath, and having a pitchy spot 

 on the crown in front of the eyelets ; sides of the face without bris- 

 tles ; epistoraa not prominent : eyes red, convex ; all the facets very 

 small : sucker pale tawny, clothed with tawny hairs ; palpi pale 

 tawny, beset with black bristles : feelers tawny, shorter than the 

 face ; third joint conical, full twice the length of the second ; bris- 

 tle black, feathered to the tip with very short hairs, more than twice 

 the length of the third joint : abdomen black, spindle-shaped, much 

 longer than the chest : legs tawny ; thighs yellow ; feet brown to- 

 wards the tips ; claws black : wings rather narrow, colourless, 

 adorned with three brown bands ; the first at one-third of the length 

 of the wing from the base becomes indistinct at a little below the 

 fore border, and disappears in the disk of the wing ; the second, a 

 little beyond, proceeds to the hind border, where it is joined to the 

 third ; the latter is very broad, and occupies one-third of the wing 

 from the tip, it incloses a colourless spot on the hind border ; wing- 

 ribs and veins tawny, the latter pitchy in the brown parts of the 

 wing ; lower cross-vein slightly curved outward, parted by more 

 than its length from the middle cross-vein, by more than twice its 

 length from the tip of the wing, and by less than half its length 

 from the hind border ; poisers yellow. Length of the body 3 lines ; 

 of the wings 5^ lines, 



Group X. 



Trypeta cornigera, n. s., mas. Fulva, capite flaw quadrieornuto, 

 thorace nigro trimaculato , palpis antennis pedibusque flavis , alis 

 limpidis angusiis fusco vittatis. 



Body tawny, slender, beset with a few black bristles: head 

 yellow, armed above with four black horns ; these are as long as 

 the head and somewhat widened towards the tips, which are trun- 

 cated : face whitish, its sides without bristles ; epistoma not promi- 

 nent : eyes red ; fore part slightly convex, its facets larger than 

 those elsewhere : sucker tawny, clothed with yellow hairs ; palpi 

 yellow, beset with a few black bristles : feelers yellow, shorter than 

 the face ; third joint conical, very much longer than the second ; 

 bristle slender, downy, black towards the tip, near thrice the length 

 of the third joint : disk of the chest slightly ferruginous ; a black 



