LIST OF DIPTERA. 551 



Eumerus sabulonum, Zett. Dipt. Scand. ii. 863, 2. Loew, Ent. 



Stett. ix. 1848, 114, 4. E. tricolor? Meig. Dipt. iii. 204, 2. 



E. strigatus ? Meig. Dipt iii. 207, 7. Curt. Brit. Ent. 749, 3. 



E. Silene ? Meig. Dipt. iii. 210, 12. Curt. Brit. Ent. 749, 6. 



E. rubriventris, Macq. Dipt. Nord. Syrph. 119, 2. Hist. Nat. 



Dipt. i. 528, 10. Meig. Dipt. vii. 112, 18. Syrphus tricolor ? 



Fabr. Ent. Syst. Suppl. 563. Eristalis tricolor ? Fabr. Syst. 



Antl. 244, 52. Pipiza sabulonum, Fall. Dipt. Suec. Syrph. 



61,7. 

 a. ? From Mr. Children's collection. 



Eumekus obliquus, Wied. Auss. Zweif. ii. 112, 3. Milesia obliqua, 



Fabr. Syst. Antl. 194, 28. 

 a. Sierra Leone. Presented by the Bev. D. F. Morgan. 



Eumerus Aquilius, n. s., mas. jEneo-viridis, thoracis fasciis qua- 

 tuor cinereis, abdominis fasciis tribus interruptis arcuatis cine- 

 reis, antennis nigris,pedibus viridi-ceneis, tarsis piceis, alis nigro 

 cinereis. 



Body brassy green : head beset on the crown with a few black 

 hairs, covered with white silky down, and clothed with white hairs 

 in front : mouth and feelers black ; third joint of the latter covered 

 with hoary bloom : eyes dark red ; facets very large in the middle 

 of the fore part : chest clothed with short tawny hairs, adorned with 

 four gray stripes : breast clothed with short hoary hairs : abdomen 

 adorned with three interrupted arched gray bands, clothed with 

 short tawny hairs, and at the tip beneath with short black hairs : 

 legs brassy green, clothed with short pale hairs ; feet pitchy, their 

 soles and the knees ferruginous : wings dark gray ; wing-ribs pitchy ; 

 veins black ; poisers ferruginous. Length of the body 4 lines ; of 

 of the wings 6 lines. 



a. ? From Mr. Children's collection. 



Eumerus porcus, Barnston, MSS., fem. Niger, thorace cinereo 

 quadrivittato, abdomine maculis nigris nitentibus canisque or- 

 nato, antennis piceis, pedibus nigris, genubus tarsisque ferrugi- 

 neis, alis subcinereis. 



Body black, clothed with black hairs : head covered with white 

 bloom, and clothed with white hairs beneath, pale yellow in front 

 and around the base of the feelers : mouth black : feelers pitchy ; 

 bristle black : eyes brassy black ; all the facets small : chest adorned 

 with four gray stripes : breast tinged with gray : abdomen ellipti- 

 cal, deep velvet-like black, longer and a little broader than the 

 chest ; each segment adorned with a triangular black shining spot 



