TRICHOMYIA. 261 



Genus III. ULOMYIA. 



ULOMYIA, Hal. Saccopteryx, Hal. ; Curt. B. E. 745 : (name preoccupied 

 in Mammalia, Illiger.) Tipula p., L. ; F. E. S. Psyckoda p., Meig. 



Proboscis brevis, non compressa. Labrum breve. Maxillae obsoletse. 



Antennae moniliformes. Mas. Alae sinu medio convexo. 



Proboscis shorter than in Psychoda, not compressed. Labrum short. 

 Maxillae obsolete. Antennae moniliform. Wings tense. Male. Wings 

 with a coriaceous pouch. 



The larva lives in clear running water, and has, like a dorsi- 

 branchial Annelid or Phyllocloce, down the back two rows of acute, 

 lanceolate, foliaceous branchia-like appendages ; each row consists 

 of three pair on each segment, viz. a pair on each of the three 

 folds or subdivisions of the segment. Otherwise most like the 

 larva of Pericoma. 



1. hirta, L. F. S. ii. 1772 (1761) ; F. -fuliginosa, Meig. Nigro- 

 fusca, alis apice maculis tribus albicantibus. Long. 1^ ; alar. 3 lin. 



Blackish-brown. Wings with three apical whitish spots. 



Not rare. (E. S. I.) Fabricius expressly mentions the white 

 tip of the wing (in Pericoma mibila the cilia of the apex are 

 whitish at the end only, dusky at the base) ; Linnaeus does not; 

 but the chequered black and white suits this species better than 

 P. nubila. Reared from larvse found on fallen leaves lying in a 

 waterfall of a clear rivulet. 



Genus IV. TRICHOMYIA. 



TRICHOMYIA, Hal.; Curt. Brit. Ent. 745 (1839). Phalanomyia, Loew. 

 Psychoda p., Eoser ; Zett. 



Oculi rotundi, remoti. Antennae 12-articulatae, articulis obconicis. 



Alae apice rotundatae ; areolae brachiales clausae ; vena postrema ab- 



breviata. 



Antennae filiform ; first and second joints thick ; the rest longer, 

 somewhat conical. Wings with a complete discal areolet ; five external 

 areolets ; second petiolated ; third complete ; brachial areolets not ex- 

 ceeding the first third of the wing ; costal areolets half divided ; veins 

 very hairy. Valves of the oviscapt broad, ovate. 



1. urbica,Hal. ; Curt.B.E. 745. 8 (1839). aurea, Zeit.Jlaves- 

 cens ? Roser. Fcem. fusca, nigro-hirta, fronte thorace et abdominis basi 

 flavo-hirtis, alis flavescentibus nigro-bifasciatis, halteribus pallidis apice 

 nigro-fuscis, femoribus tibiisque flavescentibus. 



Fern. Brown. Front, thorax, and base of abdomen clothed with 



