232 PROCEEDINGS OF THE ACADEMY OP 



The various forms, contained in the group thus characterized, may be 

 arranged into several natural groups of lower order, most of which will be 

 erected at some time into new genera. Those among them offering characters 

 which require an immediate separation, have been supplied with generic names ; 

 bixt as long as the whole group is not subdivided into genera of an equal sys- 

 tematic value, it is preferable to leave all its subdivisions under a common 

 generic appellation. 



Limnophila in its present definition comprises all the species which 

 Macquart would have located in his genus Limnophila; but it contains 

 besides those, species with two radial area, but without petiolate areolet which, 

 in Macquart's distribution, belonged to his genus Limnobia; (compare 

 what has been said about it in the introduction.) 



Analytical table. 



1. A supplementary cross-vein in the subcostal area, about the middle of the 



anterior margin. (Sect. 7. Subgenus Epiphragma nob.) 2 



A supplementary|cross-vein at the tip of the second radial area. (Sec. 10. 



Dicranophragma.) 

 Antennae pale at base, thorax cinereous, with brown spots, feet pale, wings 



spotted with brown ; 2\ 3 lin. long. L. fuscovaria nob. 



A supplementary cross-vein in the pobrachial areolet, 3 



No supplementary cross-veins, 4 



2. Wings variegated with brown and tawny bands and spots, but without 



ocelliform spots ; body pale brown ; thorax pale sericeous behind the 

 wings ; feet tawny ; femora with a brown ring before the tip ; lin. long 4. 



L. solatrix nob. 

 Wings variegated with brown ocelliform spots ; long. lin. 4^, 



L. pavonlna nob. 



3. Antenna? of the $ longer than head and thorax together ; $ with rudi- 



mentary wings. (Sect. 2 ; subgenus Idioptera Macq.) Wings with 

 two brown bands and several brown spots ; head and thorax cinereous ; 

 abdomen yellow, with brown margins ; long. lin. 3, L. fasciata Lin. 



Antenna? of the rf hardly reaching the base of the wings ; joints of the 

 flagellum subglobular ; cinereous, with brown feet ; wings with 7 or 8 

 brown spots along the anterior margin ; lin. 2 J. (Sect. 3,) 



L. aprilina nob. 



4. Petiolate areolet extant (that is, four externomedial areolets,) 5 

 Petiolate areolet wanting (that is three externomedial areolets,) 15 



5. Wings with large brown spots along the anterior margin and the central 



cross-veins, 6 



Wings altogether without spots or with a brown stigma and nebulosities on 



the cross-veins only, . 7 



6. Body black, shining ; antenna? of the rj 1 as long as the body, or a little 



longer, slender, filiform ; clothed with soft, erect hairs ; tbose of the 9 

 setaceous, not reaching beyond the base of the wing ; feet brown, femora 

 ferruginous with brown tip; long. lin. 3 4. (Sect. 1. Subg. Lasio- 

 m a s t i x nob.) L. macrocera Say. 



Body cinereous ; antenna? of <^ and 9 short ; thorax with four brown 

 stripes ; feet dark tawny, with brown tips ; long. lin. 3| 4. (Section 

 9th. Subg. Dactylolabis nob.) L. montana nob. 



7. Cubital area considerably longer than the subapical, its base being so much 



nearer to the base of the wing ; wings infuscated, cross-veins clouded ; 

 thorax cinereous, abdomen dark tawny ; long. lin. 3 3^. (Section 5th, ) 



L. luteipennis nob. 



Cubital area of equal length with the subapical, or not much longer, the 



base of both being nearly equidistant from the base of the wing, 8 



8. Thorax cinereous, 



[Aug. 



