154 Descriptions of British Diptera. 



vous, the hypostome with two hlack points anteriorly, and the 

 crown with another black spot ; the margin of the eyes yellow ; the 

 pubescence on the thorax is yellowish-green, and scutellar spines en- 

 tirely yellow. 3^-4^ lines. 



Not so plentiful as the following, but occurring now and then on 

 banks and in meadows. " Cardew Mire," T. C. Heysham, Esq. " In 

 ponds, Holywood : Killarney, &c." A. H. Haliday, Esq. 



6. Odontomyia viridula. (s.) 



Stratiomys viridula, Fabr. Panzer, Fauna Germ, lviii. 18- Meig. Zwei. iii. 

 149 Odontomyia viridula, Latr. Gen. Crust. 



Head and antennae blackish, the former with whitish silky pu- 

 bescence ; eyes green, with a purple band ; thorax entirely clothed 

 with short hairs of a golden or brassy colour ; the hinder margin of 

 the scutellum and the two spines yellowish : abdomen yellowish- 

 green both above and below, with a black band along the back, ra- 

 ther narrow, and widened posteriorly in the male, but broad in the 

 female, and widening suddenly on the third and fourth segments ; 

 legs entirely yellow ; halteres whitish ; wings with yellow nervures, 

 and having a single submarginal cell. 3-3^ lines. 



A species of frequent occurrence in damp meadows, and on the 

 margin of ponds, &c. throughout England and the south of Scotland 

 during the summer months. Taken plentifully about Edinburgh. 

 " Chelsea," Rev. A. Badger. It is probably distributed over the 

 whole island. 



7. Odontomyia tigrina. 

 Musca tigrina, Gmelin — Stratiomys tigrina, Fabr. Meig. Panzer, Faun. 

 Germ, lviii. rig. 20 — Odontomyia tigrina, Latr. Stephens. 



Head and antennae black, the hypostome in the female with grey 

 hairs ; eyes with a purple fascia ; thorax black, with pubescence of 

 the same colour in the male, but the pubescence in the female yel- 

 lowish, inclining to green when seen in certain lights ; abdomen 

 entirely black above, rufous beneath, the under side of the female 

 widely margined with black ; legs ferruginous, the thighs nearly 

 all brown, and the tibiae having a patch of that colour towards the 

 middle. 3|-4 lines. 



Has been taken near London and elsewhere, but appears to be rare. 



Genus CLITELLARIA, Meig. 

 Antennae about the length of the head, the two first joints near- 

 ly equal, short and somewhat cup-shaped, the third thicker and 

 conical, five-ringed, and terminating in a two-jointed style, (Fig. 1 ;) 



