258 MUSCIDJ.. 



12. Cochleariae, Hal. A. N. H. iii. 403. 12 (1839). Nigro- 

 (Bnescens, facie flavicante, palpis nigris, alis obscuris, lialteribus basi 

 nigris. Long. 1 ; alar. 2 lin. 



JKneoiis-hlach . Face yeUovnsh. Palpi black. Wings dusky. Hal- 

 teres black at the base. Very like II. erytlirodoiua, but appears to be 

 a distinct species. 



Rare ; found in June at Hollywood, near Belfast. In the col- 

 lection of Mr. Haliday. (I.) 



13. albilabris, Meig. Zw. vi. 71. 22 (1830) ; Mcq.; 'Yi^X.—anjyria, 

 Desv. — ctrgyrostoma, Stenli. ; Zett. Nigra, nitida, facie alba, antemia- 

 rum articulo tertio ftilvo, halteribus basi palpisque tiigris. Long, i ; 

 alar. If lin. 



Black, shining. Face white. Halteres at the base and palpi black. 

 Third joint of the antenna tawny. The third joint of the antenna is 

 7nore orbicnlate than in the other species, and the tcings are nearly lanceo- 

 late, with the radial vein shorter. 



Very rare. In meadows at Hollywood, near Belfast. In the 

 collection of Mr. Haliday. (I.) 



Subgenus 2. Atissa. 



Atissa, Hal. A. N. H. iii. 404 (1839). Ephydra p., Hal. E. M. I. 

 174. 



Fades brevis, sub antennis ntrinqiie im]}resSa, margine infero prominulo. 

 Antenna articido tertio spharoideo, subcompresso ; arista dorso breviter 

 pectinata. Ala lanceoluta. Vena discali-recurrens a margine remota. 

 Face short, impressed on each side beneath the antenna, with the lower 

 border rather prominent. Third joint of the antenna spheroidal, slightly 

 compressed ; arista pectinated above with short bristles. Wings lanceo- 

 late ; discal-reciirrent vein remote from the border. 



14. pygmsea, Hal. E. M. I. 174 (1834). Cinerea, facie albida, 

 antennis tursisque ferrugineis. Long. -|; alar. 1^ lin. 



Cinereous. Eace whitish. Antenna; and tarsi ferruginous. 

 Rare ; found in a salt-marsh at Hollywood, near Belfast. In 

 the collection of Mr, Haliday. (1.) 



Subgenus 3. Glenanthe. 



Glenantue, Hal. A. N. H. iii. 404 (1839). 



Fades sub anteniiis utrinqne impressa, medio longitrorsum convexa. Ocnli 

 inferne attenuati, subangnlati. Antenna articulo tertio orbiculato, coni- 

 presso ; arista brevi, subtilissime pubescente. Vena discali-rect/rrens ab 

 ala margine distans. Fcem. Abdomen apice rima longitudinali Inber- 

 ciilum muricatum includente. 



