50 MYCETOPHILID^E. 



latter, forming an obtuse angle near its base, and after an inward curve, 

 ending at about four-fifths of the length ; cubital proceeding from the 

 angle of the radial, straight from thence to its end, which is a little in 

 front of the tip of the wing ; subapical emerging from the pobrachial 

 transverse veinlet, forked beyond half its length ; sub anal forked, form- 

 ing the prasbrachial and the pobrachial ; anal and axillary incomplete ; 

 humeral veinlet near the base. Areolets thirteen the humeral, the 

 radical, the subcostal, the radial, the prsebrachial, which is united to the 

 pobrachial, the cubital, the subapical, three externo-medial, the anal, 

 the axillary and the subaxillary one ; the three last are incomplete. 

 Posterior margin forming a curve at beyond twice the length of the 

 humeral areolet from the base. Halteres short. Abdomen much 

 longer than the thorax. Legs rather short and stout, minutely pubes- 

 cent; tibia without spines, their spurs very minute; tarsi not longer 

 than the tibiae. 



The only British species of this genus lives in woods, and is 

 less active than the other Mycetophilida. The larva feeds on 

 fungi. 



1. pallipes, Meig. ! Zw. i. 230. 1. pi. 8. f. 10 (1818); Mcq. ; 

 Winn. Nigra, alis sublimpidis, halteribus pedibusque testaceis, abdo- 

 mine piceo. Long. 2 ; alar. 4 lin. 



Black. Wings almost limpid. Halteres testaceous. Abdomen pi- 

 ceous. Legs testaceous. 



Bare. Inhabits decayed trunks of trees. (E. I.) 



Genus XII. SCIARA. 



SCIATIA, Meig. Kl. Zw. vi. (1830); Zett.; Stseg. Tipula p., L. ; 

 F. E. S.; Geoff.; Gmel. Chironomus p., F. Sciara p., Meig. Zw. i. 

 P. Hirtea p., F. S. A. Molobrus, Latr. ; Mcq. 



Corpus parvum, sa3pissime nigrum. Caput parvurn. Proboscis pro- 

 minula. Labium bilobum. Oculi emarginati. Ocelli tres, niedius 

 minimus, antepositus. Palpi triarticulati, incurvi. Antennae 1 Q-ar- 

 ticulatce, subfiliformes. Thorax subellipticus. Ala angustse, imma- 

 culate; vena subcostalis brevis ; cubltalis et subanalis simplices ; sub- 

 apicalis furcata. Halteres longiusculi. Abdomen elongatum. Pedes 

 vix elongati; tibiae non spinosa, calcaribus bremusculis. Mas. An- 

 tennas corpora vix breviores. Abdomen apice bilobum. Fcem. An- 

 tennae corporis dimidio non longiores. Abdomen apice attenuatum. 

 Body small, very generally black. Head small. Proboscis some- 

 what prominent. Labium bilobed. Eyes emarginate. Ocelli three, 

 the middle one in front, very small. Palpi three-jointed, curved down- 

 ward. Antennce sixteen-jointed, nearly filiform. Thorax nearly ellipti- 

 cal. Wings more or less narrow, blackish or limpid, not spotted ; sub- 



