512 PROCEEDIXGS OF TJIE yATIOXAL MUSEU3I. vol.44. 



Philippi' will prove to be the same species. The data for tliis 

 material are: 



Totoiiieipan, Guatemala, Central America, 1902 (G. Eisen, coll.), 3 

 males, 2 females. Antigua, Guatemala, Central America, 1 female. 



Genus ERIOPTERA Meigen. 



Erioplera Mkigex, Illigcr's Magazine, vol. 2, 1803, p. 262. 



Chemalida Rond.wi, Prodromus Dipt. Italicac, vol. 1, 1856, p. ISO. 



Limnna Uo^^dasi, Prodromus Dipt. Italicae, vol. 1, 1856, p. ISl. 



lima RoNDAKi, Prodromus Dipt. Italicse, vol. 1, 1856, p. 182. 



Dimnoica Rond.4.m, Prodromus Dipt. Italicae, vol. 4, 1861, Corrigenda, p. 11. 



Trkhosticha Schixer, Wion. Ent. Monatschr., vol. 7, 1863, p. 221. 



Erioplera Ostkn Sacke.v, Monographs, vol. 4, 1869, p. 140. 



The subgenera of the genus ERIOPTERA Meigen. 



Erioplera Meigbm, Illigers Magazine, vol. 2, 1803, p. 262. 

 Cheilotrichia Rossi, Verz. osterreich. Dipt., 1848, p. 12. 

 Acyphana Osten Sacken, Monographs, vol. 4, 1869, p. 151. 

 Hoplolabis Osten Sacken-, Monographs, vol. 4, 1869, p. 152. 

 Mesocyphona Osten Sacken, Monographs, vol. 4, 1869, p. 152. 

 Empeda Osten Sacken, Monographs, vol. 4, 1869, p. 183. 



Of these subgenera, Mesocyphona and Empeda are the only ones 

 definitely known to occur in the Neotropical fauna. The great 

 majority of species fall within the Mesocyphona group, which, in the 

 tropics, shows quite a cUversity of whig and leg patterns. The genus 

 will probably prove to be a very extensive one when more extended 

 collections are made. 



In liis Catalogue, E. Ljaich Arribalzaga gives Erioplera (Mesocy- 

 phona) Mrsutipes ilacquart, describeil from tne Canarj" Islands, and 

 wliich Osten Sacken placed in Trimicra. There is certainly an error 

 in this determination, and I have omitted tlie species from the list. 



KEY TO THE SPECIES OF .M ESOCVnlON A . 



1. Wings with d;uk or light spots 2. 



Wings unspotted, hyaline or nearly so 11 . 



2. Wings light colored with darker, more or less distinct spots 3. 



Wings dark colored, at least on the cells C, Sc, and R, with lighter spots and dot.*. 4. 



3. Femora, libiie, and tarsi conspicuously annulated. 



nnnuh'pcs Williston ( Lesser Antilles. Brazil). 

 Femora, with one subapical ring; tibia: and tarsi unicolorous. 



;)ari'n Osten Sacken - (East. I'. S., Brazil). 



4. Large species (wing 6 mm. in length) splcndida, new species (C. Amer.). 



Smaller species (wing 4 mm. or less) 5. 



5. Centers of cells M, Cu, and A of the wings almost hyaline, colorless. 



hnabi, new species (Mexico'). 



CentcrsofcellsM, Cu,and Aof the wings, although paler than cells C. Sc. and R, 



more or less tinged with gray or brown <i 



1 Vcrh. Zool-bot. Gcs. Wion, vol. 15. lsi». p. 61.5, pi. 23, Og. i. 



. 4, p. 162, male mid (pmale. 



