35 8 Proceedings of the Royal Irish Academy. 



Diamesa amnion Hal. — CI. : one 2 (H.). This is an interesting 

 find. The species was originally described from Ireland (Down, Cork, 

 and Kerry) in 1856, but I am not aware of any subsequent record, either 

 in Britain or on the Continent. The genus Diamesa (as now restricted) 

 is characterized by having the fourth joint of the tarsus heart-shaped and 

 shorter than the fifth. In D. ammon the antennae of the 2 have eight 

 joints, the wings are milky-white (notwithstanding the fact that Haliday 

 described them as hyaline in this sex), and the thorax obscurely yellowish- 

 brown, with three longitudinal darker brown stripes, the middle one 

 of which is double, while the whole thorax is covered with a distinct 

 whitish tomentum. 



Prodiamesa obscurimana Hit/. — CI. : two $ (H.) and one $ (G.). M. : 

 Louisburgh, two ? (M.). This genus differs from Diamesa {sens, str.) in 

 having the fourth tarsal joint longer than the fifth. P. obscurimana is 

 not an uncommon species. 



*Procladius nervosus My. — M. : Belclare, two ? (H.). A large, shining black 

 species, with pitchy legs. It is the only British representative of the 

 genus, which differs from Pelopia (Tanypus, sens str.) in having bare 

 wings. 



*Pelopia (Tanypus) culicifonnis L. — M. : Westport, one £ in Demesne > 

 Lough near Westport, four ? ; Clogher, six $ and two ? ; Knappagh, 

 one $ , and Belclare, one $ . This is a true Pelopia (Tanypus) in the 

 restricted sense, having hairy wings, the fork of the fifth longitudinal 

 vein petiolated, and the subcostal vein bifurcated at its extremity. 



P. sp. — M. : a single ? of a pretty little species, which I cannot refer to any 

 described form, was taken by me at Castlebar Lough on the last day of 

 July, 1911. It measures only 2 mm. in length, has an almost white 

 thorax with very distinct black longitudinal bands, the abdomen black 

 with whitish incisures, legs pale, with the tips of the tibiae, the tip of 

 the first tarsal joint, and the rest of the tarsus blackish. 



Ablabesmyia nebulosa Mg. — CI. : one ? (H.) ; two $ (G.). M. : Glendarary, 

 one $ and one ? , and Achill N.E., one ? (H.) ; Mulranuy, one $ (G.). 

 A. well-marked species, belonging to a genus characterized by having 

 hairy wings, with sessile fork of the fifth longitudinal vein, and the 

 subcostal vein with bifurcated tip. 

 *A. phatta Jigger. — M. : Knappagh, one ? , and Belclare, one ? (G.). A 

 pretty species, with mottled wings and annulated legs as in A. monilis L., 

 but differing from that species in having the front tarsus in the male 

 bearded. 



