. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. INTllODLCTION. 41 12. liharuphidia jlavipcs Macq. is described below under this iiaiiie. ];j. Limnohia gracilis Wied. is either a Limnophila or an Amalopis, distinguished by its large size (7 lines) and its abdo- men being inuei» longer than tiie wings. The description of this si)ecies is reproduced in the Appendix to this volume. 14. lAmnobia Inimvralix Say; a Limnophihi. I would in- cline to the opinion of Wiedemann and consider this sp
. Monographs of the Diptera of North America [microform] / prepared for the Smithsonian Institution by R. Osten Sacken. Diptera; Insects; Diptères; Insectes. INTllODLCTION. 41 12. liharuphidia jlavipcs Macq. is described below under this iiaiiie. ];j. Limnohia gracilis Wied. is either a Limnophila or an Amalopis, distinguished by its large size (7 lines) and its abdo- men being inuei» longer than tiie wings. The description of this si)ecies is reproduced in the Appendix to this volume. 14. lAmnobia Inimvralix Say; a Limnophihi. I would in- cline to the opinion of Wiedemann and consider this species as synonymous with [j. Icunipvfi oay, if in a copy of Wiedemann's Wink at the Academy of Natural Sciences in Philadelphia I had not found a marginal note, in Say's handwriting, positively deny- ing this synonymy. Say describes only a female; the venation is the same as that of toiiiiprs, ami altogether the resemblance of the two species must bo very great. I reproduce the descrip- tion of L. Jiumeralis in the Appendix. 1 a. Limnohia ignobilis Walk. (Dipt. Saun<L) has the venation like ]\Icigen, Tab. VI, fig. 5, that is, a single subnmrginal cell; there is a stump of a vein near the origin of the pra-furca. I know of no such si)ecies. The description will be reproduced in tlic Api)ondix to this volume. K'l. Limnubi )hila (c viacroccra feay = Limnopliila macrot below). n. Limnohia 2Womincns V^nWi. is very probably i^/ia??ij»/a(//a Jlavipoi Macq. IS. Limnohia 7-iro!<a of Fabricius' Fauna (inrnlnndica is prol)ably Pcdivia alhiviUa, which is indeed very like the European J'cdicia 7'ivoiia. H). Limnohia rodrata &ay = Geranomijia rodrata (comp. below). 20. Ijimnohia tdmulans Walk. ^ Dieranomyia dcfuncta (). S. I have seen the original at the Urilish ^Museum, an old and faded specimen. Mr. Walker describes the species as "pale yi^llow, legs yellow, tips of thighs, of the shanks and of the feet black;'' whereas, in reality, the body is blackish, the legs are dark
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