SCIODROMIA. 107 



1. bistigma, Ct. ! b. e. 513 (1834). — boreaUs, Ztt,, var. — -juvenilis ? 

 Ztt. ydiistacea, disco fernigineo, alls suhcinerels macula costall fusca, 

 lialtcriljus fulvis. Lono;. 2 ; alar. 5 lin. 



Opake slate-colour, slightly pubcsceut, ferruginous on the disc above, 

 pale bluish beneath. Winga pale grey, %olth a round hroicn spot near 

 the tip of the costa. Halteres tawny. 



Rare. Mr. Haliday has often found it about the edges of 

 granite blocks bathed by a rapid rivulet, iu the county Wicklow. 

 In Mr. Haliday^s collection. (E. I.) 



2. lotse, llal. MSS. Clnerea, suLtus schistacea, hi/postomate ar- 

 (jenteo, alls immaculatls. Long. 2^ ; alar. 5 lin. 



Half the size of TF. bistlgma. Slaty grey. Vertex, mesonotum, 

 and Jess evidently the back of the abdomen cinereous, with a ferrugi- 

 nous cast. Face silvery-white, head less elongated than in TF. hlstujma, 

 and the antennae and proboscis shorter. Wings Ijroader iu proportion, 

 obscure, hyaline, immaculate. Iladial vein not sinuated towards the 

 end. Anterior branch of the cubital vein more curved. Mediastinal 

 vein ferruginous, the others dusky. Halteres fuscous, the base ferru- 

 ginous. Legs immaculate, Ijlackish-brown with a cinereous tinge. 

 Male. Hypopygium dusky with a cinereous tinge ; the valves at the 

 end of it pale ferruginous. 



Rare; in the county of AVicklow. In Mr. Haliday^s collec- 

 tion. (I.) 



Genus YIII. SCIODROMIA. 



SciODROMiA, Hal; Wtw. cl. (1810). Heleodronila ^., Mq. Henie- 

 rodromla p., Es. Mlcrocera, TAX. 



Antennarum articulus tertlus qulnto hrevlor. Vena cuhltalls simplex ; 



vena exlerno-medlce 3. Coxce femoribus breviores. 



Palpi altixed to the base of the compressed maxlllpe. Third joint of 

 the a)Uennce shorter than the fifth. Cubital vein shnple ; externo-medlal 

 veins 3, arislncj from a dlscal areolet. Costal vein attenuated round the 

 posterior margin of the wing. Coxa; shorter than the femora. 



1. iiumaculata, Hal. e. m. i. 159 (1833); Ct. — fusclpennls, 

 Eoscr. — rostrata, Ztt. Cinerea, antennis nigris, alls subfeiTugineo- 

 cinereis, halteribus fuscis, pedibus uigro-fuscis. Long. 1 ; alar. 2^ lin, 



Male and Fern. Body cinereous. Epistoma narrow, silvery ; a fer- 

 ruginous tinge on the front and on the thorax. Eyes red. Proboscis 

 and antcnnte black. Wings grey, with a slight ferruginous tinge. 

 Veins Ijlack. Halteres brown, yeUow at the base. Hypopygium of 

 tlie male reilected, ventricose. Legs dark brown ; coxfe cinereous. 



Not rare. (E. 1.) 



