RIIAMPHIDIA, 105 



B. lo7igi?'osiris and the North American JR. Jlavijjes Macq., not 

 having seen the one or two other species which are said to occur 

 in Europe (compare Schiner, Fauna Austr. Vol. II, p. 558). In 

 the Berlin Museum I have seen a Brazilian species and another 

 remarkable species, without indication of the locality, the tarsi 

 of which are white. These species agree with the typical ones 

 in the absence of the marginal cross-vein. 



Four species are recorded by Mr. Loew (Bernst. und Bern- 

 steinfauna, p. 37) as occurring in the Prussian amber. This 

 would prove that this genus was much more abundantly repre- 

 sented in that fauna than it is now. I have not seen these 

 species, and am not sure whether they belong to Rhamphidia, 

 within the sense of my definition of it. 



The genus Bhamphidia (from {tafifoi, rostrum) was introduced 

 by Meigen, in 1830 (in his YIth vol.) ; one year earlier, how- 

 ever, Mr. Stephens proposed for the European B. longirostris 

 the generic name of Leptorhina {Stephens, Catal. etc. 1829), 

 which has never been in use since. Still earlier, in 1825, Saint 

 Fargeau {Encyclopedie Methodique, Insectes, Vol. X, p. 585) 

 proposed for this genus the name Megarhina, which he subse- 

 quently changed in Helius (in the Index to the same volume, p. 

 831). The claims of the name given by Meigen, strengthened as 

 they are by long usage, cannot well be disputed, 



1. R. flavipes Macq. "J, and 9 • — Femorum, tibiarumque apicibus 

 obscure fuscis ; alarum apice infuscato. 



Tip of the femora and of the tibiae dark brown; apex of the wings clouded 

 with brown. Long. corp. 0.27 — 0.2-^, 



Stn. Rhamphidia Jlavlpes Macq. Dipt. Exot. 5e Suppl. p. 17 (1855), 

 Rhamphidia prominens Walk. Dipt. Saunders, p. 435^(1850). 

 Rhamphidia brevirostris 0. Sacken, Proc. Ac, Nat. Sc. Phil. 1859, p. U22, 



Head grayish-brown, rostrum but little longer than the head, 

 brown ; palpi brown ; antennae brown at the base, flagellum paler. 

 Thorax ochraceous, or brownish, with the usual stripes more or 

 less distinctly marked ; halteres pale, sometimes slightly brown- 

 ish ; feet pale yellow ; tips of the femora and of the tibise dark 

 brown, almost black ; tips of the tarsi also darker. Abdomen 

 ochraceous or brownish ; the anterior part of the segments 

 darker; the genitals brownish. "Wings hyaline, infuscated at the 



