EPHYDRA. 261 



5. interstincta, Fal. Act. Holm. 1813. 254 (1813); Meig. ; Mcq. ; 

 Hal. ; Zett. maculipennis, Desv. Thorace fusco-cinereo, tibiis tarsisque 



fernicjuieis, alarum venis transvei'&is et punctis sex fuscis. Long, f ; 

 alar. \\ lin. 



Thorax brotcnish-grey. Wrings with brown transverse veins, and with 

 six brown dots. Tidies and tarsi ferruginous. 



Common on grass. (E. I.) 



6. interrupta, Hal. E. M. I. 176 (1834). Facie antennis tarsisqne 

 flavis, thorace cinereofusco-vittato, alis fuscis disco hyalinis venis trans- 



versis fuscis. Long. 1 ; alar. 2 lin. 



Face, antenna, and tarsi yellow. Thorax grey, with brown stripes, 

 Wings brown ; disc hyaline ; transverse veins brown. 



Rare ; found at Hollywood, and on the sandy shore of Killiney 

 Bay, county Dublin. In Mr. Halida/s collection. (I.) 



7. posticata, Meig. Zw. vi. 124. 27 (1830); Mcq.; Hal. nlgri- 

 cauda ? Stenh. ; Zett. Cinerea, abdominis apice nigro, facie antennis 

 tarsisque flavis, alis hyalinis. Long. 1 ; alar. 2 lin. 



Grey. Face, antennae, and tarsi yellow. Wings hyaline. Abdomen 

 black at the tip. 



Not uncommon. (I.) 



Subgenus 2. HTADINA. 



HYADINA, Hal. A. N. H. iii. 406 (1839). Notiphila p., Fal. ; Zett. 

 Ephydra^.; Meig.; Mcq. Hydrina p., Desv. 



Fades perpendicular is, superne parnm angustata, mx nisi nuda. Arista 

 pubescens. Vena costalis alts apicem ambiens, vena discali-recurrens 

 ab ales margine distans, venae brachialis ibidem sinu approximate. Ab- 

 domen -annulatum, segmento quinto magno glaberrimo. 

 Face vertical, slightly straitened above, almost bare. Arista pubescent. 

 Costal vein embracing the tip of the wing ; discal-recurrent vein remote 

 from the border of the wing ; brachial veins approximate in one bend of 

 the wing. Abdomen with Jive segments ; Jifth segment large, very smooth. 



8. guttata, Fal. Act. Holm. 1813. 253. 11. 12 (1813) ; Meig.; 

 Hal. ; Zett. nitida, Mcq. vernalis, Desv. Nigra, subnitida, antennis 

 subtus pedibusque testaceis, scutelli lateribm aterrimis, alis albo-guttatis. 

 Long. ^; alar. 1 lin. 



Black, slightly shining. Antennae beneath and legs testaceous. 

 Sides of the scutellum deep black. Wings with white dots. Var. . Face 

 silvery-white or straw-colour. Var. y. Legs dusky. The clear dot 

 above and below the transverse vein is not very evident unless when 

 the wings overlap. 



Common in swampy spots. (E. I.) 



