LIST OF DIPTEEA. 849 



deep and short ; the other outward, long and slight ; scales pale 

 yellow, with tawny borders. Length of the body 4 — 4^ lines ; of 

 the wings 7 — 8 lines. 

 «. Egypt. Presented by Sir Gardner Wilkinson. 



Dexia Hyala, n. s., fem. Nigro-cinerea, thorace nigro trivittato, 

 abdomine nigro-ceneo cano tessellato, antennis pedibusque nigris, 

 alis subcinereis. 



Allied to Tachina. Body dull grayish black, clothed with 

 black hairs and bristles : head adorned in front with hoary reflec- 

 tions, clothed beneath with hoary hairs ; crown broad ; epistoma 

 ferruginous, not prominent ; sides of the face beset with bristles at 

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

 those elsewhere : sucker black, pitchy and clothed with tawny hairs 

 at the tip ; palpi black, beset with black bristles : feelers black, 

 shorter than the face ; third joint deep, full twice the length of the 

 second, increasing much in depth from the base to the tip, which is 

 truncated ; bristle very much more than twice the length of the 

 third joint, feathered with short hairs for three-fourths of the length : 

 chest adorned with three indistinct black stripes : abdomen ellipti- 

 cal, brassy black, tessellated with hoary reflections, a little broader, 

 but hardly longer than the chest ; sides and hind borders of the 

 segments towards the tip armed with black spines : legs black, 

 clothed with black hairs and bristles ; foot-cushions tawny : wings 

 slightly gray ; wing-ribs and veins tawny ; veins pitchy towards the 

 tips; tip cross-vein very far removed from the hind border of the 

 wing, forming a nearly right angle with the fourth longitudinal 

 vein, curved inward near the base, straight from thence to the tip, 

 joining the border at a long distance above the tip of the wing ; 

 lower cross-vein straight for nearly half its length, very slightly 

 curved outward from thence to the tip ; scales pale yellow, with 

 pale tawny borders. Length of the body 2| lines ; of the wings 

 5 lines. 

 a. France? 



Dexia Pandama, n. s., fem. Nigra, fulvo tecta, thorace cinereo, ab- 

 domine nigro vittato, antennis ferrugineis, pedibus nigris, alis 

 subcinereis. 



Allied to Tachina. Body black, clothed with black hairs and 

 bristles : head adorned with a tawny covering ; epistoma not pro- 

 minent, tawny on each side ; sides of the face fringed with bristles : 

 eyes pitchy : fore part slightly convex, its facets larger than those 

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



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