25 10 Proceedings of the Royal Irish Academy. 



characterized by having the basal joint of the tarsus only about one-fifth 

 the length of the second. 



Family Liriopidae (Ptychopteridae). 



Liriope (Ptychoptera) albimana Fab. — CI. : one 2 (J.) ; one $ (Gh). 



L. lacustris Mg. — M. : Belclare one ? (H.). 



L. paludosa Mg. — M. : Westport, one $ in demesne ; Louisburgh, one 



(? sex) (M.). 

 L. scutellaris Big. — CI. : one $ ; M. : Lough near Westport, one 2 (G.). 



Family Dixidae. 



Dixa aestivalis Mg. — CI. : one cJ and one 2 , Creggan (H.). This species is 

 distinguished from its allies by its entirely clear (unspotted) wings and 

 its bright yellow thorax, which is adorned with three conspicuous dark 

 brown longitudinal stripes. 



Family Mehisinidae (Simuliidae). 



*Melusina (Simulium) argyreatum Mg. — M. : Louisburgh, one $ (M.). 



*M. latipes Mg. — M. : Glendarary, one 2 of what I believe to be this 



species (H.). 

 M. reptans L. — CI. : one c? and one $ (G.). M. : Mulranny, one ? (H.) ; 



Belclare, one ? (H.). 



Family Psyehodidae. 



Ulomyia fuliginosa Mg. — M. : Belclare, one S (G.). 

 *Pericoma cognata Eaton. — M. : Westport, three $ in garden (G.). 

 *P. notabilis Eaton. — M. : Westport, one (? sex). 



Family Phrynidae (Ehyphidac). 



Phryne (Rhyphus) fenestralis Scop. — M. : Westport, two $ in garden (G.). 



A common fly, often found on windows (hence its specific name). 

 P. punctata Fab. — CI.: (G.). M. : Westport (H. & G.); Lough near 



Westport (G.); Belclare, and Louisburgh (M.). 



Family Itonididae (Cecidomynclae). 



Hormomyia sp. — M. : Louisburgh, one (M.). 



[Two other species of this family are in the collection, but I am 

 unable to determine them.] 



