﻿622 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  Zetterstedt. 
  The 
  wings 
  have 
  the 
  sixth 
  vein 
  very 
  short 
  and 
  the 
  

   seventh 
  bent 
  up 
  sharply 
  round 
  end 
  of 
  sixth. 
  Several 
  species 
  have 
  

   the 
  under 
  calyptra 
  unprojecting, 
  and 
  would 
  not 
  readily 
  lend 
  them- 
  

   selves 
  to 
  arrangement 
  according 
  to 
  the 
  key 
  given 
  for 
  the 
  genera 
  

   of 
  Anthomyidse 
  in 
  WilHston's 
  Manual; 
  but 
  the 
  venation, 
  coupled 
  

   with 
  the 
  Syrphus-like 
  abdomen 
  of 
  the 
  males, 
  should 
  indicate 
  their 
  

   generic 
  position 
  readily 
  enough. 
  The 
  other 
  species 
  included 
  in 
  this 
  

   paper, 
  besides 
  those 
  given 
  in 
  table 
  at 
  beginning, 
  are 
  new 
  to 
  science 
  

   or 
  to 
  the 
  American 
  list. 
  The 
  notes 
  given 
  with 
  each 
  indicate 
  to 
  

   what 
  species 
  they 
  are 
  most 
  closely 
  allied, 
  and 
  may 
  probably 
  lead 
  

   to 
  their 
  identification 
  in 
  many 
  other 
  collections 
  in 
  this 
  country. 
  

   The 
  drawings 
  given 
  of 
  the 
  legs 
  are 
  not 
  drawn 
  to 
  the 
  same 
  scale, 
  

   but 
  are 
  true 
  representations 
  individually 
  of 
  the 
  relative 
  lengths 
  

   and 
  position 
  of 
  the 
  bristles. 
  

  

  Of 
  the 
  24 
  species 
  of 
  Fannia 
  already 
  described 
  recognizabl}^, 
  or 
  

   recorded, 
  from 
  the 
  area 
  covered 
  by 
  the 
  species 
  in 
  the 
  present 
  paper, 
  

   13 
  are 
  European, 
  and 
  to 
  these 
  must 
  be 
  added 
  the 
  5 
  here\vith 
  recorded, 
  

   making 
  a 
  total 
  of 
  18 
  European 
  species, 
  which 
  is 
  a 
  rather 
  large 
  per- 
  

   centage 
  for 
  a 
  Dipterous 
  family. 
  

  

  KEY 
  TO 
  SPECIES 
  FANNIA, 
  WITH 
  TRIPUNCTATE 
  ABDOMEN. 
  

  

  1. 
  Hind 
  tibia 
  with 
  long, 
  soft, 
  hairlike 
  bristles 
  on 
  ventral 
  surfaces 
  p\mo, 
  p. 
  623. 
  

  

  Hind 
  tibia 
  without 
  long, 
  hairlike, 
  ventral 
  bristles; 
  at 
  most 
  a 
  few 
  short 
  bristles 
  

  

  present 
  2. 
  

  

  2. 
  Dorsum 
  of 
  thorax 
  gray, 
  or 
  yellowish 
  pollinose, 
  with 
  distinct 
  longitudinal 
  stripes. 
  . 
  3. 
  

   Dorsum 
  of 
  thorax 
  shining 
  black, 
  sometimes 
  slightly 
  pollinose, 
  but 
  never 
  distinctly 
  

  

  striped 
  4. 
  

  

  3. 
  Large 
  species 
  5 
  mm. 
  Hind 
  femora 
  tuberculate 
  near 
  apex 
  on 
  ventral 
  surface, 
  tuber- 
  

  

  culate 
  portion 
  with 
  a 
  fasciculus 
  of 
  long 
  curved 
  bristles 
  grandis, 
  p. 
  623. 
  

  

  Smaller 
  species 
  2^3 
  mm. 
  Hind 
  femora 
  not 
  tuberculate 
  and 
  without 
  fasciculus. 
  

  

  vittata, 
  p. 
  623. 
  

  

  4. 
  Hind 
  femora 
  with 
  a 
  series 
  of 
  8-9 
  straight, 
  fine, 
  close-placed, 
  hairlike 
  bristles 
  on 
  

  

  middle 
  third 
  of 
  anteroventral 
  surface 
  ; 
  hind 
  "tibia 
  with 
  only 
  one 
  antero 
  ventral 
  

  

  bristle 
  at 
  near 
  middle 
  trimaculata, 
  p. 
  623. 
  

  

  Hind 
  femora 
  without 
  a 
  series 
  of 
  hairlike 
  bristles 
  at 
  middle, 
  the 
  whole 
  of 
  antero- 
  

   ventral 
  surface 
  with 
  more 
  widely 
  placed 
  bristles 
  which 
  are 
  not 
  of 
  a 
  regular 
  

   length 
  5. 
  

  

  5. 
  Hind 
  femora 
  with 
  a 
  series 
  of 
  3 
  long, 
  hairlike, 
  anteroventral 
  bristles, 
  the 
  middle 
  

  

  one 
  duplicated, 
  the 
  first 
  at 
  about 
  middle, 
  the 
  last 
  at 
  two-fifths 
  from 
  apex, 
  and 
  a 
  

   rather 
  shorter 
  but 
  much 
  stronger 
  bristle 
  midway 
  between 
  the 
  last 
  and 
  the 
  tip 
  

  

  of 
  femur 
  conspicua, 
  p. 
  624. 
  

  

  Hind 
  femora 
  otherwise 
  bristled 
  6. 
  

  

  6. 
  Legs 
  mostly 
  yellow; 
  hind 
  femora 
  with 
  1-2 
  strong 
  bristles 
  at 
  near 
  apex 
  on 
  anteroven- 
  

  

  tral 
  surface, 
  and 
  a 
  group 
  of 
  long, 
  hairlike 
  bristles 
  on 
  a 
  slightly 
  raised 
  portion, 
  

   at 
  apical 
  third, 
  on 
  postero 
  ventral 
  surface; 
  hind 
  tibee 
  with 
  2 
  anteroventral 
  

  

  bristled 
  benjamini, 
  p. 
  625. 
  

  

  Legs 
  almost 
  entirely 
  black; 
  hind 
  femora 
  without 
  any 
  distinct 
  raised 
  portion, 
  or 
  

   group 
  of 
  hairs 
  at 
  apical 
  third 
  7. 
  

  

  7. 
  Hind 
  tibiae 
  with 
  1 
  anteroventral 
  bristle 
  8. 
  

  

  Hind 
  tibiae 
  with 
  3-4 
  anteroventral 
  bristles 
  leucosticta, 
  p. 
  627. 
  

  

  8. 
  Hind 
  temur 
  with 
  6-7 
  strong 
  anteroventral 
  bristles 
  on 
  apical 
  third, 
  .femoralis, 
  p. 
  627. 
  

   Hind 
  femur 
  without 
  those 
  bristles 
  howardi, 
  p. 
  626. 
  

  

  