﻿486 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  vol.44. 
  

  

  6. 
  Cornell 
  University, 
  Ithaca, 
  New 
  York. 
  The 
  rather 
  extensive 
  

   collections 
  made 
  by 
  Mr. 
  Parish 
  in 
  the 
  Province 
  of 
  Pard, 
  Brazil, 
  in 
  

   January 
  and 
  February, 
  1912. 
  

  

  7. 
  Pomona 
  College, 
  Claremont, 
  California. 
  A 
  collection 
  of 
  5 
  

   specimens, 
  3 
  species, 
  from 
  Mexico; 
  received 
  through 
  Prof. 
  C. 
  F. 
  

   Baker. 
  

  

  8. 
  Museu 
  Rocha, 
  Ceara, 
  Brazil. 
  Ten 
  specimens 
  of 
  a 
  Geranomyia; 
  

   received 
  from 
  Mr. 
  P. 
  Rocha. 
  

  

  9. 
  Staudinger 
  and 
  Bang-Haas, 
  Dresden, 
  Germany. 
  A 
  collection 
  of 
  

   South 
  American 
  species; 
  22 
  specimens, 
  15 
  species; 
  in 
  author's 
  

   collection. 
  

  

  10. 
  Mr. 
  E. 
  B. 
  Williamson, 
  Bluffton, 
  Indiana. 
  Ten 
  specimens, 
  rep- 
  

   resenting 
  3 
  species, 
  collected 
  by 
  Mr. 
  Williamson 
  on 
  his 
  recent 
  trip 
  

   (see 
  p. 
  483) 
  ; 
  in 
  author's 
  collection. 
  

  

  In 
  a 
  very 
  recent 
  paper,^ 
  Dr. 
  G. 
  Enderlein 
  has 
  added 
  much 
  to 
  our 
  

   knowledge 
  of 
  tropical 
  crane-flies. 
  The 
  specific 
  descriptions 
  and 
  the 
  

   figures 
  are 
  excellent, 
  but 
  the 
  very 
  free 
  erection 
  of 
  genera 
  must 
  be 
  

   criticized. 
  Of 
  the 
  15 
  genera 
  proposed 
  in 
  this 
  paper, 
  several 
  are 
  rank 
  

   synonyms 
  of 
  older 
  genera, 
  while 
  the 
  majority 
  of 
  the 
  others 
  are 
  based 
  

   on 
  trivial 
  differences 
  of 
  venational 
  or 
  antennal 
  characters. 
  In 
  regard 
  

   to 
  this 
  subject 
  it 
  may 
  be 
  well 
  to 
  quote 
  the 
  words 
  of 
  Osteu 
  Sacken,^ 
  

   as 
  follows: 
  

  

  To 
  these 
  successors 
  I 
  am 
  free 
  to 
  give 
  a 
  piece 
  of 
  advice, 
  as 
  the 
  result 
  of 
  more 
  than 
  

   30 
  years' 
  experience 
  with 
  the 
  Tipulidas, 
  and 
  this 
  is 
  not 
  to 
  introduce 
  new 
  genera 
  

   prematurely. 
  Large 
  accessions 
  of 
  new 
  forms, 
  or 
  of 
  variations 
  of 
  already 
  well-known 
  

   forms, 
  must 
  be 
  expected 
  from 
  as 
  yet 
  unexplored, 
  principally 
  tropical, 
  regions; 
  but 
  

   these 
  accessions 
  although 
  large 
  will 
  be 
  slow 
  in 
  coming. 
  Do 
  not 
  introduce 
  new 
  genera 
  

   for 
  every 
  slight 
  deviation 
  from 
  a 
  well-known 
  type, 
  because 
  you 
  would 
  soon 
  have 
  no 
  

   end 
  of 
  new 
  genera 
  and 
  a 
  growing 
  difficulty 
  in 
  discriminating 
  between 
  them. 
  But 
  do 
  

   not 
  hesitate 
  to 
  establish 
  a 
  new 
  genus 
  for 
  a 
  fofm 
  that 
  can 
  not 
  be 
  forced 
  into 
  any 
  of 
  the 
  

   existing 
  genera 
  and 
  which 
  shows 
  distinctive 
  characters 
  in 
  more 
  than 
  one 
  organ 
  of 
  

   its 
  body. 
  Such 
  forms 
  are 
  not 
  very 
  common. 
  

  

  The 
  opinion 
  that 
  I 
  have 
  formed 
  of 
  Enderlein's 
  genera, 
  after 
  a 
  

   careful 
  study 
  of 
  their 
  characters, 
  is 
  given 
  below. 
  Mr. 
  F. 
  W. 
  Edwards, 
  

   the 
  well-known 
  British 
  authority 
  on 
  the 
  Limnobinse, 
  writes 
  me 
  that, 
  

   in 
  his 
  opinion 
  also, 
  most 
  of 
  the 
  Enderlein 
  genera 
  rpst 
  on 
  a 
  very 
  insuffi- 
  

   cient 
  basis. 
  

  

  1. 
  Ctenacroscelis 
  (p. 
  1) 
  equals 
  Holorusia 
  Loew\ 
  (H. 
  ruhiginosa 
  

   Loew 
  has 
  cross-vein 
  r 
  present 
  in 
  normal 
  individuals, 
  and 
  connected 
  

   with 
  R2+3 
  instead 
  of 
  Rj.) 
  

  

  2. 
  Icriomastax 
  (p. 
  9) 
  may 
  be 
  a 
  valid 
  genus, 
  although 
  the 
  characters 
  

   on 
  which 
  it 
  is 
  based 
  are 
  rather 
  trivial. 
  

  

  1 
  Giinther 
  Enderlein. 
  Studien 
  iiber 
  die 
  Tipuliden, 
  Liniuobiiden 
  Cylindroloniiden, 
  und 
  Ptychopteriden, 
  

   Zoologische 
  Jalirbiicher. 
  Abteilung 
  fiir 
  systematik, 
  geographic 
  uiid 
  Biologie 
  der 
  Tiere, 
  1912, 
  vol. 
  32. 
  

   pt. 
  1, 
  pp. 
  1-88, 
  fig. 
  ."-il. 
  

  

  2 
  Osten 
  Sacken, 
  Studies 
  on 
  Tipulida-, 
  pt. 
  2, 
  Berlin. 
  Ent. 
  Zeitschr., 
  vol. 
  31 
  , 
  p. 
  1G3. 
  

  

  