﻿366 
  MARGERY 
  MOSKLEY. 
  

  

  A. 
  Cusliion 
  to 
  which 
  gill 
  is 
  attached, 
  b. 
  Stem 
  of 
  gill 
  to 
  which 
  seven 
  filaments 
  

   are 
  attached, 
  c. 
  Cut 
  edge 
  of 
  epipodite 
  of 
  first 
  maxilliped. 
  D. 
  Bulb 
  to 
  which 
  

   is 
  attached 
  scaphognatliitCj 
  whicii 
  is 
  not 
  shown. 
  E. 
  Strongly 
  calcified 
  ridge, 
  

   part 
  of 
  thoracic 
  wall, 
  representing 
  part 
  of 
  fused 
  epimera 
  of 
  anterior 
  thoracic 
  

   segments, 
  r. 
  Cut 
  edge 
  of 
  thoracic 
  wall, 
  which 
  here 
  turns 
  outwards 
  to 
  join 
  

   lining 
  of 
  branchiostegite. 
  G. 
  The 
  part 
  of 
  epipodite 
  not 
  cut 
  oif. 
  H. 
  Pivot, 
  part 
  

   of 
  thoracic 
  wall, 
  to 
  which 
  is 
  articulated 
  the 
  coxopodite 
  of 
  the 
  third 
  maxilliped. 
  

   I. 
  Boss 
  which 
  bears 
  coxopodilic 
  setae, 
  which 
  are 
  not 
  shown, 
  k. 
  Outer 
  edge 
  of 
  

   lamina, 
  part 
  of 
  first 
  maxilliped, 
  connecting 
  that 
  limb 
  with 
  hard 
  ridge 
  (e), 
  and 
  

   bearing 
  at 
  its 
  upper 
  end 
  cushion 
  to 
  which 
  gill 
  is 
  attached. 
  

  

  PLATE 
  24. 
  

  

  Pig. 
  2. 
  — 
  Left 
  anterior 
  rudimentary 
  gill 
  in 
  situ, 
  showing 
  adjoining 
  thoracic 
  

   wall 
  and 
  limbs. 
  Magnified 
  6 
  diameters, 
  a. 
  Cushion 
  to 
  which 
  gill 
  with 
  single 
  

   filament 
  is 
  attached, 
  b. 
  Calcified 
  ridge 
  as 
  e 
  in 
  Pig. 
  1. 
  c. 
  Cut 
  edge 
  of 
  

   thoracic 
  wall. 
  </ 
  and 
  e. 
  Regions 
  of 
  thoracic 
  wall, 
  f. 
  Strongly 
  calcified 
  ridge, 
  

   to 
  which 
  is 
  attached 
  artbrodial 
  membrane 
  of 
  third 
  maxilliped. 
  g. 
  Scar 
  left 
  by 
  

   posterior 
  artlirobranch, 
  cut 
  off. 
  h. 
  Scar 
  left 
  by 
  podobrancb, 
  cut 
  off. 
  i. 
  Exo- 
  

   podite 
  of 
  third 
  maxilliped. 
  _/. 
  Boss 
  which 
  bears 
  coxopoditic 
  setaj. 
  k. 
  Proto- 
  

   podite 
  of 
  mandible. 
  /. 
  Basipodite 
  and 
  coxopodite 
  of 
  first 
  maxilla 
  at 
  their 
  

   region 
  of 
  attachment 
  to 
  body-wall. 
  m. 
  Bulb 
  to 
  which 
  is 
  attached 
  scapho- 
  

   gnathite, 
  which 
  is 
  cut 
  off. 
  n. 
  Exopodite 
  of 
  first 
  maxilliped. 
  o. 
  Exopodite 
  of 
  

   second 
  maxilliped. 
  p. 
  Stump 
  of 
  podobraiich, 
  cut 
  off, 
  of 
  second 
  maxilliped. 
  

   q. 
  Stump 
  of 
  arthrobranch, 
  cut 
  off, 
  of 
  second 
  maxilliped. 
  r. 
  Scar 
  left 
  by 
  

   anterior 
  arthrobranch, 
  cut 
  off. 
  s. 
  Scar 
  left 
  by 
  scapliognathite. 
  t. 
  Scar 
  left 
  by 
  

   epipodite, 
  cut 
  off, 
  of 
  first 
  maxilliped. 
  u. 
  Eudopodite 
  of 
  second 
  maxilliped. 
  

   V. 
  Endopodite 
  of 
  third 
  maxilliped. 
  to. 
  Bisipodite 
  of 
  third 
  maxilliped. 
  

   X. 
  Endopodite 
  of 
  first 
  maxilla. 
  

  

  Pigs. 
  3, 
  4, 
  5, 
  and 
  7 
  viewed 
  under 
  microscope 
  by 
  transmitted 
  light 
  with 
  

   coverglass. 
  (a) 
  Minute 
  hooked 
  setae 
  . 
  

  

  Pig. 
  3. 
  — 
  Rudimentary 
  gill 
  plume 
  from 
  right 
  side. 
  Magnified 
  30 
  diameters. 
  

  

  Pig. 
  4.— 
  Rudimentary 
  gill 
  plume 
  from 
  left 
  side 
  of 
  male. 
  Magnified 
  35 
  

   diameters. 
  

  

  Pig. 
  5. 
  — 
  Rudimentary 
  gill 
  plume 
  from 
  left 
  side. 
  Magnified 
  38 
  diameters. 
  

  

  Pig. 
  6. 
  — 
  Rudimentary 
  gill 
  plume 
  from 
  right 
  side 
  of 
  same 
  specimen 
  as 
  

   Pig. 
  4, 
  viewed 
  in 
  drop 
  of 
  spirit 
  without 
  coverglass. 
  Magnified 
  28 
  diameters. 
  

  

  Pig. 
  7. 
  —Rudimentary 
  gill 
  plume 
  from 
  right 
  side 
  of 
  same 
  specimen 
  as 
  

   Pig. 
  5. 
  Magnified 
  34 
  diameters. 
  

  

  