﻿A 
  STUDY 
  IN 
  OAROINOLOGT. 
  79 
  

  

  Plate 
  7. 
  

  

  Fig-. 
  42. 
  Right 
  second 
  maxilliped 
  of 
  Ranina 
  dentata. 
  The 
  exopodite 
  is 
  deeply 
  grooved 
  on 
  

  

  its 
  surface 
  and 
  has 
  no 
  flagellum. 
  

   Figs. 
  44-47. 
  Notosceks 
  chimmonis. 
  Fig. 
  44. 
  Second 
  maxilliped, 
  the 
  exopodite 
  of 
  winch, 
  like 
  

  

  that 
  of 
  Ilcmina, 
  is 
  deeply 
  grooved 
  on 
  the 
  ventral 
  surface 
  and 
  bears 
  no 
  flagellum. 
  

  

  Fig. 
  45. 
  First 
  maxilliped. 
  Fig. 
  46. 
  Second 
  maxilla 
  with 
  scaphognathite. 
  

  

  Fig. 
  47. 
  First 
  maxilliped. 
  

   Figs. 
  48-50. 
  Raninoides 
  personates. 
  Fig. 
  48. 
  Third 
  maxilliped. 
  Fig. 
  49. 
  Second 
  maxilliped, 
  

  

  the 
  expodite 
  of 
  which 
  bears 
  a 
  minute 
  flagellum. 
  Fig. 
  50. 
  First 
  maxilliped. 
  

   Figs. 
  51-53. 
  LyPeidus 
  tridentatus. 
  Fig. 
  51. 
  Third 
  maxilliped. 
  Fig. 
  52. 
  Second 
  maxilliped, 
  

  

  the 
  exopodite 
  of 
  which 
  bears 
  a 
  minute 
  flagellum. 
  Fig. 
  53. 
  First 
  maxilliped', 
  

  

  the 
  exopodite 
  of 
  which 
  is 
  elongated 
  in 
  correlation 
  to 
  the 
  elongation 
  of 
  the 
  an- 
  

   tennary 
  sternum. 
  

   Fig. 
  54. 
  Second 
  maxilliped 
  of 
  Philyra 
  Icevis. 
  The 
  podobranch 
  and 
  mastigobranch 
  are 
  

  

  wanting 
  : 
  the 
  exopodite 
  is 
  not 
  grooved 
  on 
  the 
  ventral 
  surface 
  and 
  bears 
  a 
  short 
  

  

  flagellum, 
  

   Fig. 
  55. 
  First 
  maxilliped 
  of 
  Philyra 
  Icevis. 
  The 
  mastigobranch 
  is 
  of 
  great 
  length 
  and 
  the 
  

  

  exopodite 
  is 
  of 
  normal 
  shape 
  and 
  bears 
  a 
  flagellum. 
  These 
  appendages 
  of 
  Philyra 
  

  

  should 
  be 
  compared 
  with 
  the 
  corresponding 
  appendages 
  of 
  the 
  several 
  genera 
  of 
  

  

  Raninidoe. 
  

   Fig. 
  m. 
  Notopus 
  dorsipes 
  : 
  ventral 
  view 
  of 
  the 
  antennary 
  region 
  to 
  show 
  the 
  relation 
  of 
  the 
  

  

  respiratory 
  tube 
  to 
  the 
  antennary 
  sternum. 
  The 
  pterygostomial 
  portions 
  of 
  the 
  

  

  carapace 
  have 
  been 
  cut 
  away. 
  

   Fig. 
  57. 
  Frontal 
  view 
  of 
  Notosceks 
  chimmonis 
  to 
  show 
  the 
  antenna? 
  in 
  their 
  natural 
  position 
  

  

  and 
  their 
  relation 
  to 
  the 
  orbits. 
  The 
  right 
  antenna 
  has 
  been 
  pulled 
  slightly 
  

  

  outwards 
  to 
  expose 
  the 
  antennules. 
  

   Fig. 
  58. 
  Ventral 
  view 
  of 
  the 
  anterior 
  part 
  of 
  thorax 
  and 
  head 
  of 
  Raninoides 
  personatus. 
  The 
  

  

  right 
  third 
  maxilliped 
  has 
  been 
  removed 
  and 
  the 
  left 
  displaced 
  from 
  the 
  middle 
  

  

  line 
  to 
  expose 
  the 
  mouth 
  frame 
  and 
  to 
  show 
  the 
  elongated 
  exopodites 
  and 
  endo- 
  

  

  podites 
  of 
  the 
  first 
  maxillipeds 
  forming 
  the 
  floor 
  of 
  the 
  spout-shaped 
  antennary 
  

  

  sternum. 
  The 
  latter 
  extends 
  well 
  forward 
  between 
  the 
  basal 
  joints 
  of 
  the 
  

  

  antennules. 
  

  

  