EiMivni'.A. 205 



The species will form two groups : — 

 «. Third joint of the antennae obtuse. Species 19-31. 

 a a. Third joint of the antennse almost conical. Species 22. 



19. albula, INIeig. Zw. vi. 115. 4 (1830) ; Hal. Facie cinerascente, 

 iliorace obscure-ceneo, halteribus albidls, abdomine (jlaiico incisui'is obscuris. 

 Long. Iv; alar. 3 liu. 



Dtdl-aneons. Face grey'uh. Ilalteres whitish. Abdomen (/laiicons ; 

 sutures dark. 



Eare; found in August at Loch Fad^ Isle of Bute. In J\Ir. 

 Haliday's collection. (S.) 



20. palustris, Fal. Hydr. 4. 2 (1813); Meig.; Mcq. ; Hal.; Zett. 

 — carlclcola, Desv. Nlgro-miea. capite pedlbusque nujris, fade setosa, 

 halteribus fuscanis. Long. 1 ; alar. 2 lin. 



jEneous-blach. Head and leys blacl- . Face bristly. Halter esbroicnlsh. 

 Common in marshes. (E. I.) 



21. obscura, Meig. Zw. vi. 115. 3 (1830). Obscure eenea, eplslo- 

 matejlavo setuloso, alls hyallnls, pedlbus clnerascentlbus. Long. |- ; alar. 

 \\ lin. 



Obscure ceneons. Eplstoma yellow, someichat bristly. Wlnys limpid. 

 Halteres tvhlte. Leys cinereous. 

 Rare. (E.) 



22. defecta, Hal. E. M. I. 174 (1834). Nigro-scnca, antcnnis 

 subtus tarsisque luteis, scutello cyanescente, alis obscuris hyalino-gut- 

 tatis. Long. |; alar. 1| lin. 



iEneous-black. Antennae beneath and tarsi luteoiis. Scutellnin bluish. 

 Wings dark, with hyaline dots. 

 Common in swampy spots. 



Subgenus 8. Scatella. 



ScATELLA, Desv. E. M. 801 (1830); Hal. Notlphlla p., Fal.; Zett. 

 Ephydra p., Fal. ; Meig. ; Mcq. ; Hal. ; Zett. 



Caput depressimi ; facie buccata et marylne perlstomatls villosis aut setosls ; 

 clypeo recondlto. Antenna artlculo tertlo obtiiso. Arista arciiata., 

 pubescens. Ungues curvatl, divarlcali. Onychia manlfesta. 

 Head depressed. Face Inflated, hairy or bristly, as is also the border 



of the peristoma ; clypeus withdrawn. Third joint of the antenna; obtuse. 



Arista curved, pubescent. Claios bent. Onychia conspicuous. 



23. sibilans, Hal. E. M. I. 175 (1S34). Ferruylnosa, fade fta- 

 vlda setosa, alls obscuris, abdomine miescente. Long, .y ; alar. 1 lin. 



Ferruginous. Face yellowish, bristly. Wings dark. Abdomen some- 

 ichat aneous. 



Very common on the sea- coast at Hollywood, near Belfast. 

 (E.I.)' 



VOL, II. 2 M 



