﻿XXUl 
  

  

  slaty-black 
  Skipper, 
  with 
  broad 
  white 
  bar 
  on 
  the 
  under- 
  

   side 
  of 
  the 
  hind-wings 
  ( 
  ? 
  Ismene 
  sp.), 
  which 
  were 
  attracted 
  

   to 
  the 
  light 
  of 
  the 
  lamps 
  in 
  the 
  saloon 
  (of 
  H.M.S. 
  

   ' 
  Tyne 
  ')." 
  

  

  The 
  " 
  Tyne 
  " 
  was 
  lying 
  about 
  ^ 
  of 
  a 
  mile 
  o£E 
  the 
  shore 
  at 
  

   Aden, 
  and 
  the 
  time 
  was, 
  Commander 
  Walker 
  believed, 
  be- 
  

   tween 
  9 
  and 
  10 
  p.m. 
  The 
  Eev. 
  K. 
  St. 
  Aubyn 
  Eogers 
  had 
  

   called 
  attention 
  to 
  the 
  crepuscular 
  habits 
  of 
  the 
  genus 
  in 
  

   Proc. 
  Ent. 
  Soc, 
  1918, 
  p. 
  xxvii. 
  The 
  species 
  is 
  well 
  known 
  

   at 
  Aden 
  as 
  well 
  as 
  from 
  many 
  parts 
  of 
  Africa. 
  It 
  is 
  certainly 
  

   usually 
  on 
  the 
  wing 
  by 
  day, 
  and 
  an 
  account 
  of 
  its 
  resting 
  

   habits 
  at 
  night, 
  at 
  Aden, 
  was 
  published 
  by 
  Col. 
  J. 
  W. 
  Yerbury 
  

   in 
  the 
  Bombay 
  Natural 
  History 
  Society, 
  vol. 
  vii, 
  1892, 
  p. 
  217. 
  

   Col. 
  Yerbury 
  found 
  it 
  not 
  uncommon 
  in 
  June 
  and 
  July 
  1883 
  

   on 
  the 
  Aden 
  coast, 
  but 
  only 
  once 
  met 
  with 
  it 
  inland. 
  Three 
  

   specimens 
  taken 
  by 
  Lim 
  at 
  Aden 
  on 
  July 
  8, 
  1884, 
  are 
  in 
  the 
  

   collection 
  of 
  the 
  British 
  Museum. 
  

  

  Obseevations 
  on 
  Neotropical 
  insects. 
  — 
  Prof. 
  Poulton 
  

   gave 
  an 
  account 
  of 
  the 
  following 
  observations 
  by 
  Mr. 
  C. 
  B. 
  

   Williams, 
  and 
  exhibited 
  the 
  specimens 
  referred 
  to. 
  The 
  notes 
  

   were 
  contained 
  in 
  two 
  letters 
  written 
  from 
  Trinidad 
  on 
  Oct. 
  12, 
  

   1918, 
  and 
  Feb. 
  11, 
  1919. 
  Prof. 
  Poulton 
  had 
  been 
  kindly 
  

   helped 
  in 
  the 
  determinations 
  by 
  his 
  friends, 
  Mr. 
  G. 
  J. 
  Arrow, 
  

   Major 
  E. 
  E. 
  Austen, 
  Mr. 
  J. 
  H. 
  Durrant, 
  Sir 
  George 
  Hampson, 
  

   Dr. 
  G. 
  A. 
  K. 
  Marshall 
  and 
  Mr. 
  N. 
  D. 
  Eiley. 
  

  

  (1) 
  " 
  Two 
  specimens 
  of 
  a 
  Skipper 
  butterfly 
  which 
  went 
  

   through 
  some 
  curious 
  migration 
  -like 
  movements 
  on 
  the 
  

   border 
  line 
  of 
  Panama 
  and 
  Costa 
  Rica. 
  On 
  certain 
  evenings 
  

   they 
  would 
  fly 
  past 
  in 
  thousands, 
  from 
  about 
  4.30 
  p.m. 
  

   onwards, 
  at 
  full 
  speed 
  in 
  a 
  S.E. 
  direction, 
  only 
  to 
  return 
  (but 
  

   in 
  much 
  smaller 
  numbers) 
  later 
  the 
  same 
  evening. 
  I 
  will 
  

   give 
  all 
  the 
  particulars 
  in 
  another 
  paper 
  I 
  am 
  preparing 
  on 
  

   Butterfly 
  migrations. 
  I 
  find 
  the 
  species 
  is 
  quite 
  common 
  

   in 
  Trinidad 
  ; 
  in 
  fact, 
  it 
  is 
  one 
  of 
  our 
  commonest 
  Skippers. 
  

   Yet 
  no 
  one 
  has 
  ever 
  seen 
  it 
  migrating 
  in 
  the 
  way 
  I 
  saw 
  it 
  in 
  

   Panama. 
  They 
  are 
  almost 
  impossible 
  to 
  catch." 
  

  

  The 
  Hesperid 
  butterfly 
  was 
  Calpodes 
  etJilius, 
  Cram, 
  — 
  ^two 
  

   labelled 
  Panama, 
  Guabito, 
  Bocas 
  del 
  Toro, 
  Apr. 
  3, 
  1917, 
  

   three 
  Guabito, 
  May 
  24, 
  1917. 
  All 
  were 
  females. 
  [This 
  fact 
  

  

  