﻿556 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  io3 
  

  

  4. 
  Face 
  with 
  two 
  conspicuous 
  transverse 
  furrows 
  Marbenia 
  MaUoch 
  

  

  Face 
  not 
  with 
  two 
  conspicuous 
  transverse 
  furrows 
  Periscelis 
  Loew 
  

  

  List 
  of 
  the 
  described 
  Periscelidae 
  of 
  the 
  world 
  

  

  (Valid 
  genera 
  are 
  in 
  boldface. 
  Synonyms 
  are 
  in 
  italic. 
  The 
  first 
  species 
  listed 
  

   under 
  each 
  genus 
  is 
  the 
  genotype) 
  

  

  Cyamops 
  Melander, 
  1913b, 
  p. 
  291. 
  To 
  Anthomyzidae. 
  

   Diopsosoma 
  Malloch, 
  1932, 
  p. 
  267. 
  

  

  D. 
  prima 
  Malloch, 
  1932, 
  p. 
  267. 
  Perd. 
  

   Marbenia 
  Malloch, 
  1931. 
  p. 
  31. 
  

  

  M. 
  peculiaris 
  Malloch, 
  1931, 
  p. 
  32. 
  Panamd. 
  

   Meronychia 
  Enderlein, 
  1917. 
  Lapsus 
  for 
  Meronychina. 
  

   Meronychina 
  Enderlein, 
  1914, 
  p. 
  327. 
  Synonym 
  of 
  Periscelis. 
  

   Microperiscelis 
  Oldenberg, 
  1914, 
  p. 
  39. 
  Synonym 
  of 
  Periscelis. 
  

   Myodris 
  Lioy, 
  1864, 
  p. 
  1103. 
  Synonym 
  of 
  Periscelis. 
  

   Neoscutops 
  Malloch, 
  1926, 
  p. 
  25. 
  

  

  N. 
  rotundipennis 
  Malloch, 
  1926, 
  p. 
  25. 
  Costa 
  Rica. 
  

   Panamenia 
  Curran, 
  1934, 
  p. 
  323. 
  Synonym 
  of 
  Scutops. 
  

  

  Periscelis 
  Loew, 
  1858, 
  p. 
  113. 
  Synonyms: 
  Meronychina, 
  Microperiscelis, 
  Phorti- 
  

   coides, 
  SphyroperisceUs, 
  Myodris. 
  

   P. 
  annulipes 
  Loew, 
  1858, 
  p. 
  113. 
  Europe. 
  

  

  P. 
  annulata 
  (Fallen), 
  1813. 
  (Notiphila.) 
  Europe, 
  United 
  States. 
  

   Myodris 
  annulata 
  Lioy, 
  1864, 
  p. 
  1103. 
  

   Microperiscelis 
  annulata 
  Oldenberg, 
  1914, 
  p. 
  39. 
  

   Meronychina 
  annulata 
  Enderlein, 
  1914, 
  p. 
  327. 
  

   Phorticoides 
  flinti 
  Malloch, 
  1915, 
  p. 
  87. 
  

   P. 
  nebulosa 
  Hendel, 
  1913, 
  p. 
  389. 
  Argentina. 
  

   P. 
  occidentalis, 
  new 
  species. 
  Western 
  United 
  States. 
  

   P. 
  wheeleri 
  (Sturtevant), 
  1923, 
  p. 
  2. 
  (SphyroperisceUs.) 
  United^States. 
  

   P. 
  winnertzi 
  Egger, 
  1862. 
  Europe. 
  

  

  Microperiscelis 
  winnertzi 
  Oldenberg, 
  1914, 
  p. 
  39. 
  

   Phorticoides 
  Malloch, 
  1915, 
  p. 
  87. 
  Synonym 
  of 
  Periscelis. 
  

   Podocera 
  Czerny, 
  1929, 
  p. 
  93. 
  To 
  Anthomyzidae. 
  

   Scutops 
  Coquillett, 
  1904, 
  p. 
  97. 
  Synonym: 
  Panamenia. 
  

   S. 
  fascipennis 
  Coquillett, 
  1904, 
  p. 
  97. 
  Central 
  America. 
  

   S. 
  chapmani 
  (Curran), 
  1934, 
  p. 
  323 
  (=fascipennis 
  Coquillett?). 
  (Panamenia.) 
  

  

  Panamd. 
  

   S. 
  maculipennis 
  Malloch, 
  1926, 
  p. 
  24. 
  Mexico. 
  

   SphyroperisceUs 
  Sturtevant, 
  1923, 
  p. 
  1. 
  Synonym 
  of 
  Periscelis. 
  

  

  Family 
  Anthomyzidae 
  

  

  Since 
  Cyamops 
  Melander 
  and 
  Podocera 
  Czerny, 
  formerly 
  referred 
  

   to 
  the 
  Periscelidae, 
  are 
  being 
  put 
  in 
  this 
  family, 
  an 
  account 
  of 
  the 
  

   Nearctic 
  genera 
  is 
  presented. 
  

  

  The 
  following 
  definition 
  of 
  the 
  family 
  is 
  based 
  largely 
  on 
  that 
  of 
  

   Collin 
  (1944). 
  

  

  Third 
  antennal 
  segment 
  making 
  nearly 
  a 
  right 
  angle 
  with 
  the 
  

   second; 
  at 
  least 
  one 
  reclinate 
  orbital 
  bristle; 
  postverticals 
  small 
  and 
  

   convergent, 
  or 
  absent; 
  \dbrissae 
  present; 
  no 
  presutural 
  dorsocentrals; 
  

   mesopleura 
  and 
  disc 
  of 
  scutellum 
  bare; 
  first 
  vein 
  short, 
  not 
  over 
  one- 
  

   third 
  length 
  of 
  wing; 
  auxiliary 
  faint 
  apically, 
  ending 
  in 
  costa 
  just 
  basal 
  

  

  