EPHYDRA. 259 



Face impressed on each side beneath the antennae, convex longitudinally 

 in the middle. Eyes attenuated below, slightly angulated. Third joint 

 of the antenna orbiculate, compressed ; arista short, very finely pubescent. 

 Discal-recurrent vein remote from the border of the wing. Abdomen of 

 the female with a longitudinal furrow, which includes a muricate tubercle. 



15. ripicola, Hal. A. N. H. iii. 404. 15 (1839). Cinerea, fronte 

 thoraceque ferruginosis, antennis tibiis tarsisque ferrugineis, facie albida. 

 Long. 1 ; alar. 2 lin. 



Cinereous. Front and thorax ferruginous. Antennae, tibiae, and 

 tarsi ferruginous. Face whitish. 



Found on the muddy sea-coast at Hollywood, near Belfast. In 

 Mr. Haliday's collection. (I.) 



Genus IV. EPHYDRA. 



EPHYDRA, Fal. Act. Holm. 1813 (1813); Meig.; Mcq.; Hal.; Zett. 



Oculi glabri, seu vage pubescentes. - Proboscis magis incrassata. Antenna 

 articulo secundo exunguiculato. Femora subaqualia. 

 Eyes bare, or thinly pubescent. Proboscis rather thick. Third joint 



of tJie antenna not unguiculate. Femora of almost equal size. 



SYNOPSIS OF THE SUBGENERA. 



a. Prsebrachial and anal areolets small, complete. 11. CAN ACE. 

 a a. Prsebrachial and anal areolets incomplete. 



b. Claws almost straight, with obsolete onychia. 10. EPHYDRA. 

 b b. Claws curved, with hairy onychia. 

 c. Head hardly depressed. 



d. Transverse vein near the border of the wing. 4. PELINA. 

 d d. Transverse vein remote from the border. 

 e. Face ciliated on each side. 1. HYDRINA. 

 e e. Face almost bare. 

 /. Costal vein passing round the tip of the wing. 2. HYA- 



DINA. 



//. Costal vein ceasing at the tip of the wing. 3. AXYSTA. 

 c c. Head depressed. 



d. Clypeus exserted. 5. NAP^A. 

 d d. Clypeus withdrawn. 



e. Peristoma bare on the border. 6. ILYTHEA. 

 e e. Peristoma hairy or pectinated. 

 /. Arista pectinated above. 7. 

 //. Arista pubescent. 8. SCATELLA. 

 ///. Arista bare. 9. TEICHOMYZA. 



