﻿512 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  Philippi* 
  will 
  prove 
  to 
  be 
  the 
  same 
  species. 
  The 
  data 
  for 
  this 
  

   material 
  are: 
  

  

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

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

  

  Genus 
  ERIOPTERA 
  Meigen. 
  

  

  Erioptera 
  Meigen, 
  Illiger's 
  Magazine, 
  vol. 
  2, 
  1803, 
  p. 
  262. 
  

  

  Chemalida 
  Rondani, 
  Prodromus 
  Dipt. 
  Italicse, 
  vol. 
  1, 
  1856, 
  p. 
  180. 
  

  

  Limnxa 
  Rondani, 
  Prodromus 
  Dipt. 
  Italicae, 
  vol. 
  1, 
  1856, 
  p. 
  181. 
  

  

  Ilisia 
  Rondani, 
  Prodromus 
  Dipt. 
  Italicse, 
  vol. 
  1, 
  1856, 
  p. 
  182. 
  

  

  Limnoica 
  Rondani, 
  Prodromus 
  Dipt. 
  Italicae, 
  vol. 
  4, 
  1861, 
  Corrigenda, 
  p. 
  11. 
  

  

  Tnchosticha 
  Schiner, 
  Wien. 
  Ent. 
  Monatschr., 
  vol. 
  7, 
  1863, 
  p. 
  221. 
  

  

  Erioptera 
  Osten 
  Sacken, 
  Monographs, 
  vol. 
  4, 
  1869, 
  p. 
  146. 
  

  

  The 
  subgenera 
  of 
  the 
  genus 
  ERIOPTERA 
  Meigen. 
  

  

  Eriaptera 
  Meigen, 
  Illigers 
  Magazine, 
  vol. 
  2, 
  1803, 
  p. 
  262. 
  

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

   Acyphona 
  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 
  

   definitel}^ 
  known 
  to 
  occur 
  in 
  the 
  Neotropical 
  fauna. 
  The 
  great 
  

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

   tropics, 
  shows 
  quite 
  a 
  diversity 
  of 
  wing 
  and 
  leg 
  patterns, 
  The 
  genus 
  

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

   collectioiis 
  are 
  made. 
  

  

  In 
  liis 
  Catalogue, 
  E. 
  Lynch 
  Arribalzaga 
  gives 
  Erioptera 
  (Mesocy- 
  

   phona) 
  hirsutipes 
  Macquart, 
  described 
  from 
  tne 
  Canary 
  Islands, 
  and 
  

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

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

  

  KEY 
  TO 
  THE 
  SPECIES 
  OF 
  MESOCYPHONA. 
  

  

  1. 
  Wings 
  with 
  dark 
  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 
  dots. 
  4. 
  

  

  3. 
  Femora, 
  tibiae, 
  and 
  tarsi 
  conspicuously 
  annulated. 
  

  

  nnnulipes 
  Williston 
  (Lesser 
  Antilles, 
  Brazil). 
  

   Femora, 
  with 
  one 
  subapical 
  ring; 
  tibiae 
  and 
  tarsi 
  unicolorous. 
  

  

  parva 
  Osten 
  Sacken 
  ^ 
  (East. 
  U. 
  S., 
  Brazil). 
  

  

  4. 
  Large 
  species 
  (wing 
  6 
  mm. 
  in 
  length) 
  splendida, 
  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. 
  

  

  kyiabi, 
  new 
  species 
  (Mexico). 
  

  

  Centers 
  of 
  cells 
  M, 
  Cu, 
  and 
  A 
  of 
  the 
  wings, 
  although 
  paler 
  than 
  cells 
  C, 
  Sc, 
  and 
  R, 
  

  

  more 
  or 
  less 
  tinged 
  with 
  gray 
  or 
  brown 
  6. 
  

  

  1 
  Verb. 
  Zool-bot. 
  Gcs. 
  Wien, 
  vol. 
  15, 
  18(i5, 
  p. 
  Clo, 
  pi. 
  23, 
  fig. 
  4. 
  

  

  2 
  Monographs, 
  vol. 
  4, 
  p. 
  162, 
  male 
  and 
  female. 
  

  

  