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Tribe RHAMPHIDINI. 
I have chosen to call this tribe by a name derived from one 
of its principal genera, rather than to use the compound term Zzm- 
nobina anomala introduced by Osten Sacken. The Rhampbidina 
of this writer is a more restricted group within this. 
Four genera and a dozen species of this tribe are known in a 
fossil state, all the genera but one, Antocha, being found in amber. 
None of the genera are extinct, though two of them were first known 
from amber inclusions, and in consequence have been the subject of 
many comments by Loew and Osten Sacken, who find in them strik- | 
ing examples of the resemblance between the amber fauna and the 
existing faunaof America. None of this tribe have been recognized 
in the European rock deposits, but Florissant furnishes two genera 
and four species. 
RHAMPHIDIA Meigen. 
Rhamphidia Meig., Syst. Beschr. eur. zweifl. Ins., vi, 281 (1830). 
In this genus are here placed several species which agree in their 
neuration quite as well with Toxorhina, but appear to lack the 
elongated rostrum of the latter genus. The neuration, however, 
shows so many minor points of departure from the described char- 
acteristics of each of these genera, that the characters of Rham- 
phidia must be made more elastic for their reception. Among 
themselves they differ also in similar particulars, and until the fossil 
species indicated from amber are better known, enabling us to 
compare all the Rhamphidini living and fossil, it will probably be 
best to include these under Rhamphidia, to which they appear to 
be most nearly allied. There is no trace in them of apical spurs 
to the tibiz. Attention should especially be directed in studying 
the fossil species to the length of the auxiliary vein, the point of 
origin of the przfurca, and the position of the great cross vein. 
This genus contains but few species, most of which are found in 
Europe, the others in eastern North America, Porto Rico, and 
Brazil (one each). Four undescribed species are recorded by Loew 
as occurring in Baltic amber. The three species found at Floris- 
sant may be thus separated : 
Table of the Species of Rhamphidia. 
Auxiliary vein ending opposite the origin of the third longitudinal vein. .saxetana. 
Auxiliary vein ending about midway between the origin of the second and third 
longitudinal veins. 
