1 88 AN ACCOUNT OF BRITISH FLIES. 



M.fuscipes, Mg. 

 Black, rather shiny ; anal segment broader than the preceding 

 ones; the male forceps small, thick. Palpi and antennae black. 

 Legs black to reddish-brown. Metatarsus of the anterior legs shorter 

 than the tibiae. Wings slightly brownish-gray, pubescent, hairs dark. 

 Length, li to 2 lin. 



M. expalpans, Wlk. 

 Very pale brown, ahnost white. Head, palpi, and antennae 

 blackish-brown. Thorax with three dark brown stripes. Abdomen 

 with a brown band on each segment at the anterior edge. Wings 

 gray, pubescent ; veins testaceous. Legs pale testaceous, pubescent, 

 long; tips of the joints dark. Length, 2 to 2| lin. 



M. iius^ax, ^\'lk. 



" Fawn-colour. Wings limpid, pubescent \ transverse veinlet 

 black ; costal, radial, and cubital veins pale testaceous, rest white. 

 Halteres white. Abdomen whitish, pubescent ; sutures of segments 

 brown. Legs whitish, pubescent. Length, 2\ lin. " (Walker). Rare. 



The following are also described : 



rWhltish testaceous. Thorax with three reddish 

 ]\I. iniersephis, Wlk. ,..J confluent stripes. Metathorax reddish. Legs 



\ pale testaceous. Length, 2 lin. ( '^ ). 

 ,, . , ,,T,i (:n (Black. Abdomen reddish. Legs testaceous, 



■^ ' ^ ' y short and stout. Length, | hn. ( ? ). 



("Pale testaceous. Thorax with three black stripe 

 M. iiiodestiis,M.^. ^) ... ...- Veins all white. Abdomen brown. Tarsi and 



\ tips of joints of legs brown. Length, i lin. ( $ ). 



[Pale testaceous. Thorax with three reddish 



1/ ^'z' Wll- ' stripes. Abdomen with two brown bands 



iLnszis, K. ... ...< before the middle and the three apical seg- 



t mcnts black. Legs whitish. Length, 2 lin. 



f Light grass-green. Three ferruginous stripes on 

 thorax ; dusky at the tip. Wings naked ; veins 

 ...»««....., xx.. - yellowish. Antenme_i2-jointed in <?, yellow; 



7-jomted in + , last jomt dusky. Length, 2 an. 

 ( (? ), i^ lin. { ^ ). Found by Haliday by Loch 

 Fad (Bute), Lough Neagh, and Lough Dirg. 



Genus. — Dianiesa, Mg. = Chlrono/nns, Wlk. pt. 



Antennae of the ? 7-jointed, the joints round, the last joint 

 cylindrical. Antennas of S plumose in all but tonsus. Eyes oval 

 and on the side of the head. The form of the eyes and veins of 

 the wings resemble Tanypus. There is a closed basal areolet 

 (pobrachial) as in Tanypus. But in Tanypus the S ^^^d ? have 

 15-jointed antennas. The fourth tarsal joint is notched at the tip. 

 PI. iv., fig. 4. 



