﻿2 
  Mr. 
  G. 
  T. 
  Baker's 
  notes 
  on 
  the 
  genitalia 
  

  

  investigations 
  of 
  Messrs. 
  Scudder 
  and 
  Burgess 
  ;* 
  all 
  of 
  

   these 
  treat 
  of 
  the 
  male 
  organs 
  only, 
  whilst 
  of 
  the 
  female 
  

   organs 
  practically 
  nothing 
  has 
  been 
  published, 
  though 
  

   they 
  are 
  certainly 
  worthy 
  of 
  examination. 
  

  

  At 
  the 
  anal 
  extremity 
  of 
  the 
  insect 
  under 
  consideration 
  

   there 
  was 
  a 
  considerable 
  protrusion 
  of 
  some 
  membrane, 
  

   either 
  fatty 
  or 
  muscular, 
  but 
  evidently, 
  from 
  its 
  nature 
  

   and 
  colour, 
  not 
  chitinous. 
  If 
  fatty, 
  it 
  would 
  be 
  soluble 
  

   in 
  ether 
  ; 
  if 
  muscle, 
  liquor 
  potassae 
  would 
  dissolve 
  it. 
  

   I 
  therefore 
  first 
  immersed 
  it 
  in 
  the 
  former, 
  which 
  did 
  not 
  

   produce 
  the 
  slightest 
  effect 
  ; 
  so 
  from 
  this 
  I 
  put 
  the 
  

   abdomen 
  into 
  a 
  solution 
  of 
  potass, 
  which 
  caused 
  the 
  

   emitted 
  portion 
  to 
  disappear 
  rapidly 
  ; 
  I 
  therefore 
  con- 
  

   clude 
  that 
  this 
  membrane 
  must 
  have 
  been 
  muscular, 
  

   and 
  arising 
  from 
  the 
  general 
  malformation 
  of 
  the 
  butter- 
  

   fly, 
  as 
  it 
  exhibited 
  no 
  signs 
  of 
  pressure 
  or 
  rough 
  usage. 
  

   Having 
  mounted 
  it 
  in 
  the 
  usual 
  way 
  [1 
  did 
  not 
  dissect 
  it, 
  

   but 
  prepared 
  the 
  whole 
  abdomen 
  W'ith 
  all 
  the 
  organs 
  

   i7i 
  situ, 
  as 
  far 
  as 
  possible), 
  I 
  will 
  now 
  describe 
  the 
  whole 
  

   of 
  the 
  genitalia, 
  comparing 
  them 
  with 
  the 
  same 
  organs 
  

   of 
  (? 
  and 
  S 
  Hijjpia 
  v. 
  Gcea, 
  and 
  will 
  adhere 
  to 
  the 
  terms 
  

   for 
  the 
  various 
  parts 
  as 
  adopted 
  by 
  Dr. 
  White 
  and 
  

   Mr. 
  Gosse. 
  

  

  It 
  may 
  be 
  advisable 
  to 
  mention 
  that 
  my 
  drawings 
  were 
  

   all 
  made 
  with 
  a 
  camera, 
  Nos. 
  1 
  and 
  2 
  being 
  magnified 
  

   about 
  ISg- 
  diameters, 
  No. 
  3, 
  31 
  diameters, 
  Nos. 
  1a, 
  1b, 
  

   1 
  D, 
  and 
  4 
  about 
  47 
  diameters, 
  and 
  Nos. 
  1 
  c 
  and 
  2 
  a 
  

   about 
  232- 
  diameters. 
  

  

  Valves, 
  fig. 
  1 
  a. 
  The 
  right 
  valve 
  is 
  well-developed, 
  

   though 
  slightly 
  abnormal 
  ; 
  it 
  is 
  roughly 
  triangular 
  in 
  

   shape, 
  with 
  the 
  base 
  hollowed 
  internally, 
  the 
  upper 
  

   (internal) 
  extremity 
  of 
  which 
  is 
  produced 
  into 
  a 
  narrow 
  

   hooked 
  finger 
  curved 
  slightly 
  downwards, 
  the 
  lower 
  

   extremity 
  being 
  rounded 
  ; 
  the 
  apex 
  is 
  likewise 
  digitate, 
  

   but 
  turned 
  upwards. 
  Between 
  the 
  upper 
  extremity 
  of 
  

   the 
  base 
  and 
  the 
  apex, 
  about 
  one-third 
  of 
  the 
  distance 
  

   from 
  the 
  former, 
  is 
  hinged 
  a 
  curious 
  arm-like 
  pendant, 
  

   fitted 
  with 
  a 
  sort 
  of 
  elbow 
  attachment 
  to 
  a 
  small 
  excre- 
  

   scence 
  on 
  the 
  margin, 
  to 
  which 
  is 
  fixed 
  a 
  hanging 
  pro- 
  

   cess 
  (fig. 
  161 
  and 
  1b), 
  which 
  is 
  evidently 
  one 
  of 
  the 
  5 
  

   clasps 
  (if 
  I 
  may 
  so 
  call 
  them), 
  the 
  ? 
  sex 
  being 
  provided 
  

   with 
  a 
  pair 
  of 
  weak 
  clasps. 
  The 
  left 
  valve 
  is 
  entirely 
  

  

  ■''• 
  'Proceedings' 
  of 
  the 
  Boston 
  (U.S.) 
  See. 
  of 
  Nat. 
  Hist., 
  April, 
  

   1870, 
  

  

  