LIMNOPHILA. 225 



SO. L.. fuscovarfa 0. S. % and 9 . — Cinerascens, abdornine fusco, 

 pedibus pallidis ; alis latis, dense fusco-punctatis ; ad costam maculis 

 majoribus fuscis ; venula transversa supernumeraria in cellula sub- 

 marginali prima. 



Grayish, abdomen brown, feet pale ; wings broad, densely dotted with 

 brown ; larger brown spots along the costa ; a supernumerary cross- 

 vein in the first submarginal cell. Long. corp. 0.22. — 0.3. 



Syn. Limnophila (Dicranophragma) fuscovaria 0. Sacken, Proc. Ac. Nat. 

 Sc. Phil. 1S59, p. 240. 



Head gray, proboscis and palpi brown ; antennae pale, brownish 

 towards the tip, with moderately long verticils ; when bent back- 

 wards, the antennae would hardly reach the basis of the wings ; 

 joints of the flagellum short, subglobular, becoming more elongated 

 and slender towards the tip. Thorax grayish, with three narrow 

 brown lines ; the intermediate one, which is paler, begins in two 

 black dots near the collare ; pleurae with two brown stripes ; 

 brown spots near and on the coxae ; halteres pale, with the tip 

 slightly dusky ; feet pale, pubescent ; tip of the tarsi a little 

 darker. Abdomen brown, paler on the margins of the segments ; 

 lateral margins darker; forceps pale; ovipositor ferruginous, long, 

 slender, nearly straight. Wings very broad, variegated with 

 numerous little brown dots ; five larger, nearly square brown 

 spots along the anterior margin ; a supernumerary eross-vein 

 connects both branches of the second vein, near the tip of the 

 anterior one ; petiole of the first submarginal cell not longer than 

 the small cross-vein ; the inner end of this cell rather broad, not 

 pointed ; praefurca somewhat angular near the basis ; second 

 posterior cell short, with a long petiole. 



Hab. Washington, D. C, and farther north ; as far as Quebec 

 (Couper) ; not rare. 



In the Proc. Acad. Nat. Sci. Philad. I have proposed for this 

 species the subgeneric name of Dicranophragma (compare p. 199). 



21. L.. rufrbasis 0. S. % and 9« — Cinerea, halteribus pallidis, alis 

 pallide fusco- fiavescentibus, stigmate fusco ; venulis centralibus et vena 

 longitudinali quinta fusco-nebulosis ; pedibus fuscis, femorum basi 

 ferruginea. 



Yellowish-gray, halteres pale, wings pale brownish-yellow, stigma brown ; 

 central cross-veins and fifth longitudinal vein clouded with brown ; feet 

 brown, basis of the femora ferruginous. Long. corp. 0.4—0.47. 



Syn. Limnophila (Prionolabis) rvfibasis 0. Sacken, Proc. Ac. Nat. Sc. Phil. 

 1859, p. 239. 

 1 5 Sept., 1868. 



