limnouiin.t;. 357 



but they are reduced to two small joints in at least one genus, 

 Geranomyia. 



It may be observed here that the suggested substitution of the 

 name Limonia, Mg., for Lhnnobia, with the consequent alteration of 

 the subfamily and sectional names is wholly untenable. This and 

 all tlie other generic names set up by Meigen in his paper published ' 

 in 1800, were established without any species being indicated, and 

 are therefore on that ground alone inadmissible. Moreover, such 

 standard names as Limnobia* sanctified by use by all authors for 

 over a hundred years, have earned their right to remain unaltered 

 as long as the science of natural history exists. Again, Meigen 

 himself entirely ignored the existence of the French pamphlet in 

 which these names appeared, when he published his authentic work 

 in German some three years later ; and seeing that endless con- 

 fusion would arise from the adoption of these genera, they can 

 have no just claim whatever to recognition. 



Table of Sections of the Subfamily LimnobiinjE. 



1. Only one submarginal cell 2. 



Two submarginal cells (one only iu .some 



species of Gonomyiu) 4. 



2. Antennje 16-jointed 3. 



Antennpe 14-jointed. — One submarginal cell; 



four posterior cells ; subcostal cross- vein near 

 tip of auxiliary vein ; discal cell open or 

 closed ; posterior cross-vein at base of discal 

 cell or before it. Tibiae without spurs. Pro- 

 boscis long or moderately long LuiNoniixi, p. 362. 



3. The 1st longitudinal vein generally ending in 



the 2nd. Tibias wnth spurs Cylinvrotomini. 



The 1st longitudinal vein ending in the costa ; [p. 358. 

 four posterior cells ; discal cell open or closed. 



Tibiae without spurs. — Proboscis variable, [p. 415. 



sometimes enormously produced * Rhamphidiixi, 



4. Tibiffi without spurs. — Four posterior cells (five 



in Cladura and allies) ; wing often pubescent 

 on the veins only or on the surface also ; 

 subcostal cross-vein generally some distance 

 before the origin of the 2nd vein, but some- 

 times near the tip. AntenniB 16-jointed .... -EijjoprsBjA'i, p. 436. 

 Tibiae with spurs 5. 



5. Subcostal cross-vein before the origin of the 



2nd longitudinal vein (some distance before 

 the tip of the auxiliary vein). Eyes pub- 

 escent. — Frons generally with a moderately 

 distinct protuberance. Four or five posterior 



* The same argument appHes to the other genera. 



t The Rhamphidiini form the least well-defined section in this subfamily, 

 more exceptions occurring in it than in any other. The submarginal cell is 

 absent in Toxorhina ; the marginal cross-vein absent in Atarba; the posterior 

 cross-vein is near the middle of the wing in Orimarga. 



2 a2 



