NOTIPIIILA. 251 



1. cinerea, Fal. Act. Holm. 350. Hydr. 8. 2 (1813); Meig. ; Mcq.! 

 pi. 21. f. 9 ; Hal. ; Zett. — -palustris, Desv. — Trapa?, Desv. — -fulvicornis, 

 Hcsv. Facie fulvescente, palpis tibiis tarsisqice ferrngineis, thorace fer- 

 ruginoso, abdomine ciuereo nigro-maculato. Long. 2 ; alar. 4 lin. 



Face tatcny-ydlow. Palpi, tibia!, and tarsi ferruginous. Thorax rust- 

 brown. Abdomen cinereous, with black spots. 



Everywhere abundant in marslies. Desvoidy lias observed that 

 it deposits its eggs in the flowers of Potamogeton. (E. S. I.) 



2. riparia, Meig. Zw. vi. 65. 2 (1830) ; Mcq. ; Hal. ; Zett. Facie 

 cinerea, palpi tibiis tarsisque ferrugineis, thorace ferruginoso, abdomine 

 ciuereo nigro-maculato, iiljiis annulo nigro. Long. 3 ; alar. 4 lin. 



Face cinereous. Palpi, tibia, and tarsi ferruginous. Thorax rust- 

 brown. Abdomen cinereous, with black spots. Tibia; tvith a black 

 ring. 



Not rare. (E. I.) 



3. uliginosa, Hal. A. N. H. iii. 922. 3 (1839). Facie fulvescente, 

 palpis pedibusque nigris, thorace ferruginoso, abdomine cinereo nigro- 

 maculato, tarsis ferrugineis. Long. 3 ; alar. 4 lin. 



Face tawny -yelloio. Frontalia deep-black. Vertex, orbits, and tho- 

 rax rusty-brown. Autennte and palpi black. Wings obscurely hyaline. 

 Halteres yellowish. Abdomen cinereous, with a blackish spot at the 

 sides of each segment. Legs black ; the tarsi (at least the two hinder 

 pairs) ferruginous. 



Found in a marsh between Glengaritf and Adriglioule ; on the 

 banks of the Shannon at Tarbert ; on the shores of Belfast Lough. 

 (I.) 



Subgenus 2. Dich^eta. 



DicHTETA, Fal. Act. Holm. 1813. Hydr. 8, 347 (1813); Meig. ; Mcq. ; 

 Hal. 



Abdomen maris convexum, apice bispinosmn, segmento penultimo niargine 

 pectinato. Characteres reliqui fere quales Notipldlce. 

 Like Notipldla. Male. Abdomen convex, with two spines at the tip ; 

 penultimate segment icith a pectinated border. 



4. caudata, Fal. Act. Holm. 1813. Hydr. 8. 349 (1813); Meig.! 

 Zw. pi. 58. f. 1-6; Mcq.; Hal. Nigra, obscura, facie fulvescente, 

 tarsis ferrugineis. Long. 3 ; alar. 4 lin. 



Black, d\ill. Face tawny-vellow. Tarsi ferruginous. 

 Eare. (E.) 



Subgenus 3. Discomyza. 



DiscoMYZA, Meig. Zw. vi. 76 (1830); Mcq.; Hal.; Stenh. Psilopa 

 p., Fal. ; Zett. 



