150 AN ACCOUNT OF BRITISH FLIES. 
Section 8.—Dzadocidine. 
Body bare, short. Head round, flat above, hairy in front. Pro- 
boscis short; palpi 4-jointed, slender. Antennz 17-jointed, stout, 
cylindrical, last joint small. Eyes reniform. Ocelli three, the 
central one not much smaller than the others. Thorax nearly round, 
SS 
Shas 
oe 
FIG. 34.—Wing and palpus of Diadocidia ferruginosa. 
scutellum small. Abdomen j7-ringed, cylindrical. Legs stout, 
pubescent ; tibiz slender, armed with spurs at the tip; posterior 
tibiz with slender spurs. Wings broad, hairy, parallel in repose ; 
first longitudinal vein very small ; second longitudinal vein springing 
from the base of the first and ending before the tip of the wing ; third 
longitudinal vein simple ; fourth forked, springing from a transverse 
angular veinlet, sixth reaches the border. Metamorphosis un- 
known. 
Macroneura, Macq. 
Genus Diadocidia, Ruthé = Sciara, Zett. 
This is the only genus in this section. 
D. flavicans, Ruthé. . 
D. ferruginosa, Mg. = \ Winthemi, Macq. 
S. testacea, Zett. 
Tawny. Thorax with three brown stripes. Abdomen yellow or 
yellowish-brown ; apex dark. Head and antenne brown, basal 
joints, palpi and proboscis yellow. Legs yellow, brownish tarsi ; 
posterior tibiz longer than tarsi. Wings grayish, with brownish veins 
and gray hairs. Length 14 to 2 lin. This seems a doubtful British 
species. Walker says it has been found by Mr. Haliday at Killarney. 
Literature on the Mycetophilide : 
1. Beitriage zur Naturgeschichte d. Insecten. Sitzburger d. Wien. 
Acad., vol. vii. Heeger. 
2. Annales des Sci. Nat., 2 s., vols. xii. and xilii Mémoire sur 
les métamor. d. plusieurs larves fungivores, etc. Dufour. 
3. Bemerkungen u. ein. Arten. Zweif. Gattungen. AZacrocera, etc. 
Isis, 1830. Stannius. 
