526 LIST OF DIPTERA. 



Acroch&ta, Wiedemann. 



Acroch^ita elegans, Perty, Del. Anim. Artie. 184, pi. 36, /. 15. 



a. Brazil. Presented by J. P. George Smith, Esq. 



b. ? 



Acrocmsta Aleus, n. s., mas. Niger, thoracis maculis duabusfia- 

 vis, scutelli dentibus duabus ferrugineis, pectore cinereo, abdomi- 

 nis segmentorum marginibus posticis Jflavis, ventre flavo albo 

 pubescente, antennis nigris basi fulvis, pedibus fulvis femoribus 

 nigris, alis subfulvis, ad costam fulvis fusco cinereoque variis. 



Head as broad as the chest, clothed on the crown, on the front 

 and beneath with short white silvery hairs : eyes reddish bronze, 

 meeting above ; facets very small : hypostoma dark tawny, shining : 

 lip black, shining : feelers black, a little more than twice the length 

 of the head ; first joint long, tawny, black at the tip ; second joint 

 very short ; third joint broader, and slightly increasing in breadth 

 from the base to the tip ; fourth joint very small : chest black, 

 clothed with short pale brown hairs, adorned with a pale yellow spot 

 on each side behind ; scutcheon armed with two ferruginous teeth 

 breast gray, thickly clothed with short white silvery hairs: abdo 

 men velvet-black, broader, but hardly longer than the chest ; hind 

 borders of the segments yellow, especially on each side ; underside 

 yellow, thickly covered with white silvery down ; first and second 

 segments short; third, fourth, and fifth segments large : legs tawny, 

 covered with white down ; hips and thighs black : wings with 

 a slight tawny tinge, dark tawny mixed with brownish gray for some 

 breadth along the fore borders; wing-ribs ferruginous; veins pi- 

 ceous, ferruginous towards the base ; poisers ferruginous. Length of 

 the body 4^ lines ; of the wings 10 lines. 



a. Brazil. Presented by J. P. George Smith, Esq. 



Alliocera, Saunders. 



Alliocera Graeca, Saunders, Trans. Ent. Soc. Lond. iv. 62, pi. 



4,/. 1. 

 a. Albania. Presented by W. W. Saunders, Esq. 



Oxvcera, Meigen. 



Oxycera Hypoleon, Staeger, Ent. Zeit. Stettin, v. 409, 1. Musca 

 hypoleon, Linn. Syst. Nat. Ed. xii. 1, 2, 980, 7. Geoff. Ins. 

 ii. 418,6. Don. Brit. Ins. v. 6, pi. 146, /. 3 Stew. El. ii. 





