LIST OF DIPTERA. 847 



with the fourth longitudinal vein, very slightly curved inward from 

 the base to the tip, joining the border a little above the tip of the 

 wing ; lower cross-vein with two slight curves, the lower inward, 

 more distinct than the other, which is outward ; scales tawny. 

 Length of the body 5 lines ; of the wings 9 lines. 

 a. Georgia. From Mr. Abbot's collection. 



Dexia Aurinia, n. s., fern. Nigra, fulvo tecta, thorace vittis quatuor 

 nigris, pectore cinereo, abdominis segmentorum marginibus anti- 

 cis fulvis, palpis fulvis, antennis luteis, pedibus fulvis, tarsis ni- 

 gris, alis cinereis costa venarumque marginibus fuscis. 

 Body black, clothed with black hairs and bristles : head tawny, 

 black on the crown, pitchy, and clothed with a few pale yellow hairs 

 beneath ; a pitchy furrowed stripe between the eyelets and the 

 feelers: epistoma slightly prominent; sides of the face fringed with 

 bristles at the base : eyes red, not hairy : sucker tawny, clothed 

 with yellow hairs ; palpi tawny, beset with black bristles : feelers 

 luteous, not more than half the length of the face ; third joint ra- 

 ther deep, rounded at the tip, about twice the length of the second 

 joint; bristle black, deeply feathered to the tip, about twice the 

 length of the third joint: chest tinged with tawny colour, adorned 

 with four slender black stripes ; breast gray : abdomen oval, shin- 

 ing, much longer, but not broader than the chest ; a broad tawny 

 band on the fore border of each segment : legs tawny, clothed with 

 black hairs and bristles, feet black ; foot-cushions pale tawny : 

 wings gray, brown on the fore borders and along the borders of the 

 veins ; wing-ribs tawny ; veins pitchy, tawny towards the base ; 

 tip cross-vein forming a slightly acute angle with the fourth longi- 

 tudinal vein (which sends forth a short stump beyond it), curved 

 inward, joining the border a little above the tip of the wing ; lower 

 cross-vein with two very slight curves, the lower inward, a little 

 more distinct than the other, which is almost imperceptible ; scales 

 yellowish white, with pale tawny borders. Length of the body 

 3^ lines ; of the wings 7 lines. 

 a. ? From Mr. Children's collection. 



Dexia Cerata, n. s., fern. Nigro-cinerea, capite cano, thorace sub- 

 vittato, abdomine fnlvo micante, palpis fulvis, antennis nigris 

 basi ferrugineis, pedibus fulvis, tarsis nigris, alis sublimpidis. 

 Body black, clothed with black hairs and bristles : head 

 adorned with a hoary covering ; a pitchy furrowed stripe between 

 the eyelets and the feelers ; epistoma and peristoma tawny, the for- 

 mer prominent ; sides of the face fringed with bristles at the base ; 



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