1. Wings laith an ai^eolet as injig.f*. 

 1. fimbriata Meig. 1. 247. 3. 2. annulata Meig. 



3. cingulata Meig. 4. maculata Fob. 



5. marginata Meg. 6. ferruginea Meig. 



2. Wings like Jig. 9, the \st furcate nervure nearly sessile. 



7. rufa Meig. Supp. 6. 295. 16. 

 Holywood, Downshire, Mr. Haliday. 



8. hirta Hgg. 



April and September, in a house at Lisson Grove. 



3. Wings 'with an areolet like Jig. 7 a. 



9. fenestella Curt. Pale piceous ; sparingly clothed with yel- 

 lowish hairs; legs ochreous, tips of trochanters and tarsi 

 fuscous : If line. 



Beginning of September, on windows, Lisson Grove. 



10. lulea Macq.Dipt. 1. 139. 10. 



11. rufilatera Walk. Ent. Mag. 4. 115. 



4. Wings isoith an areolet as in Jig, 7 b. 



12. subincana Curt. Similar to S. hirta: black, sparingly 

 clothed with hoary hairs, legs yellowish ochre, tips of tro- 

 chanters and of hinder thighs blackish; tibiae fuscous, tarsi 

 darker: If line long. 



Beginning of May, Coomb Wood. 



5. Wings 'with an areolet as in Jig. n. 



13. nigra Macq. Dip. 1. 138. 7. 



June, both sexes on damp decayed stumps of trees in the 

 New Forest. 



6. Wifigs like Meigen'sfg. 8. tab. 9. 



14. vitripennis ilii??^. May and July, near London. 



7. Wings with an areolet as in Jig. u. 



15. unimaculata Macq. Dipt. 1. 137. 5. 



In December, on windows, at Arno's Grove. 



8. Wings like the colour edjigure. 



16. sylvatica Curt. Brit. Ent. pl.Q'^X.S . 



Black, shining; head and thorax clothed with long whitish 

 shining hairs ; antennae rather long and stout, 2nd joint 

 deep ochre; legs pallid ochre, a line beneath the thighs and 

 apex of the posterior piceous, tibiae dusky, tarsi darker. 

 I took several specimens the 16th of May in a wood near 

 Southgate. 



For specimens of Orchis (Habenaria) albida. Whitish Or- 

 chis, I am indebted to Mr. T. Howson, who gathered them 

 at Giggleswick in Yorkshire : the root is represented unco- 

 loured. 



