EPHYDRA. 259 



Face impressed on each side beneath the antenufe, convex longitudinally 

 in the middle. Eyes attenuated heloio, slightly angidated. Third joint 

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

 Biscul-recvrrent vein remote from the border of the wing. Abdomen of 

 the female loith a longitudinal farrow, which includes a muricate tubercle. 



15. ripicola, Hal. A. N. H. iii. 40-i. 15 (1839). Cinerca, frontc 

 thoraceque fcrrugiiiosis, anteniiis tibiis tarsisque ferrugineis, facie albida. 

 Long. 1 ; alar. 2 lin. 



Cinereous. Front and thorax ferruginous. Antenune, tibicC, and 

 tarsi ferruginous. Face whitish. 



Fouiul oil tlie 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, sen vage pubescentes. Proboscis magis incrassata. Antenrue 

 articulo secundo exunguiculato. Femora subceqiialia. 

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



of the antennae not unguiculate. Femora of almost equal size. 



SYNOPSIS OF THE SUBGENERA. 



a. Prscbrachial and anal areolets small, complete. 11. Canace. 

 a a. Pricbraehial and anal areolets incomplete. 



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

 b b. Claws curved, with hairy onychia. 

 c. Head hardly depressed. 



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

 d d. Ti'ansverse vein remote from the border. 

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

 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.ea. 

 d d. Clypeus withdrawn. 



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

 e e. Peristoma luiiry or pectinated. 

 /. Arista pectinated above. 7. C.enia. 

 //. Arista pubescent. S. Scatella. 

 ///. Arista l)are. '.). Teicuomyza. 



