SCIODROMIA. 107 



1. bistigma, Ct. ! b. e. 513 (1834). borealis, Ztt., var. -juvenilia ? 

 Ztt. Schistacea, disco ferrugineo, alls subcinereis macula costali fusca, 

 halteribus fulvis. Long. 2 ; alar. 5 lin. 



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

 pale bluish beneath. Wings pale grey, with a round brown 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, in the county Wicklow. 

 In Mr. Halida/s collection. (E. I.) 



2. lotae, Hal. MSS. Cinerea, subtus schistacea, hypostomate ar- 

 genteo, alls immaculatis. Long. 2-^ ; alar. 5 lin. 



Half the size of W. bistigma. Slaty grey. Vertex, mesonotum, 

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

 nous cast. Face silvery-white, head less elongated than in W. bistigma, 

 and the antennae and proboscis shorter. Wings broader in proportion, 

 obscure, hyaline, immaculate. Radial 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, blackish-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 Wicklow. In Mr. Haliday's collec- 

 tion. (I.) 



Genus VIII. SCIODROMIA. 



SCIODROMIA, Hal. ; Wtw. cl. (1840). Heleodromia p., Mq. Heme- 

 rodromia p., Rs. Microcera, Ztt. 



Antennarum articulus tertius quinto brevior. Vena cubitalis simplex ; 



vena externo-media 3. Coxae femoribus breviores. 



Palpi affixed to the base of the compressed maxillae. Third joint of 

 the antenna shorter than the fifth. Cubital vein simple; externo-medial 

 veins 3, arising from a discal areolet. Costal vein attenuated round the 

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



1. immaculata, Hal. e. m. i. 159 (1833); Ct. -fuscipennis, 

 Roser. rostrata, Ztt. Cinerea, antennis nigris, alis subferrugineo- 

 cinereis, halteribus fuscis, pedibus nigro-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 antennae black. Wings grey, with a slight ferruginous tinge. 

 Veins black. Halteres brown, yellow at the base. Hypopygium of 

 the male reflected, ventricose. Legs dark brown ; coxa? cinereous. 



Not rare. (E. I.) 



