16 PROCEEDINGS OP THE ACADEMY OF 



the thorax. This coloring may have been merely accidental, and produced per- 

 haps after the death of the specimen. 



Limnophila pavonina, a single $ specimen, slightly different from the 

 specimen from which my description was drawn. The first joint of the antennae 

 is cinereous, the second brown, the following are orange. The tip of the an- 

 tenna is brownish. The abdomen shows a brown stripe along the middle of the 

 tergum and indications of such stripes along the lateral margins. The brown 

 spots on the wings are more confluent than in my specimen, so that the outlines 

 of the ocelli and ocelliform marks are less distinct than is mentioned in my 

 description. 



Limnophila te n u ip e s Say. Limnophila n. sp. (onespecimen.) Araa- 

 lopis inconstans. Teucholabis complex a. Teucholabis n. sp. (with a 

 ferrugineous, shining thorax.) Geranomyia communis. Gnophomyia t r i s - 

 tissima. Gnophomyia lugubris. Dicranoptycha sobrina. Dicra- 

 noptycha sororcula. Erioptera v e n u s t a . E r i o c e r a n. sp. (? very like 

 the cinereous specimens mentioned at the end of my description of Eriocera 

 f uli gin osa.) 



Nov. gen. et sp. (?) of my group of Tipulre anisomeraeformes, and very 

 like Eriocera, but distinguished by the presence of a petiolated areolet 

 and the antennae, which are a little longer, especially those of the $. The 

 species is easily distinguished by the color of the tarsi, which are white, except 

 at the base. 



In the same museum I saw Gonomyia b Ian da and Limnophila lutei- 

 pennnis, from South Carolina ; Rhipidia domestica, from Brazil, (!) and 

 Rhamphidia brevirostris, from South Carolina. The latter had the tho- 

 rax a little darker, and the three stripes on it more distinctly marked than in 

 my specimens ; nevertheless, I hardly doubt of their identity. 



I succeeded besides by examining the dipterological collections in Europe, in 

 ascertaining, as I had hoped, the occurrence, in other parts of the world than 

 in North America, of some of the new genera adopted in my paper. 



Gnophomyia occurs in Brazil and in Europe. I saw two elegant species 

 of this genus (Gnophomyia nigrina Wied., and . sp. ?) in the Berlin Museum, 

 and a European species (taken near Berlin) in a private collection. 



Dicr ano ptyc h a is also European. The Limnobia c i n e r as cen s 3Ieiy., 

 (syn. L. rufescens Schum.l) belongs to this genus, as I ascertained in Mr. 

 Loew's collection. 



Antochais also found in Europe ; a species very like my A. opalizans 

 occurs there. (Mr. Loew's collection.) 



Dactylolabis the L. di la tat a Loeiv from Croatia, (described in his 

 Neue Beitriige, 4tes Heft,) belongs to this subgenus. The remarkable dilata- 

 tion of the anterior margin of the wing, in the stigmatical region, which is 

 peculiar to this species, is hardly perceptible in my D. montana; still it 

 exists, although in a rudimental state; besides this, the structure of the ^ 

 forceps, (as far as could be ascertained from dry specimens,) that of the an- 

 tennae, and the situation of the spots on the wings, coincide in both species. 



Epiphragma. A Brazilian species of this subgenus, very like my E. 

 solatrix, is in the Berlin Museum; another, from Venezuela, is in Mr. 

 Loew's collection. 



Teucholabis. Two species from Brazil in the Berlin Museum; one of 

 them is exceedingly like T. complexa. 



A further object which I had, in examining the collections in Europe, was 

 to ascertain the possible identity of some of the American species, which I had 

 described as new, with European ones. The general result of my observations 

 is, that although cases of apparent analogy are not unfrequent, those of real identity 

 seem to be much rarer. My L. t r i s t i g m a is very distinct from L. tripunctata 



[Jan. 



