﻿302 
  COLLECTIONS 
  PBOM 
  MELANESIA. 
  

  

  The 
  inner 
  ramus 
  of 
  the 
  uropoda 
  is 
  less 
  distinctly 
  triangulate 
  than 
  

   in 
  the 
  specimens 
  in 
  the 
  British-Museum 
  collection 
  from 
  the 
  Philip- 
  

   pines 
  and 
  Swan 
  Kiver*. 
  The 
  median 
  lobe 
  of 
  the 
  front 
  is 
  not 
  at 
  all 
  

   prominent. 
  

  

  Reference 
  to 
  this 
  species 
  is 
  omitted 
  in 
  Mr. 
  Haswell's 
  Catalogue. 
  

  

  4. 
  Cirolana 
  scMbdtei. 
  (Plate 
  XXXIII. 
  fig. 
  A.) 
  

  

  Body 
  narrow- 
  oblong, 
  microscopically 
  punctulated, 
  convex 
  and 
  

   smooth, 
  as 
  in 
  G. 
  rossii. 
  Head 
  closely 
  encased 
  in 
  the 
  first 
  segment 
  of 
  

   the 
  body, 
  transverse, 
  with 
  scarcely 
  any 
  indication 
  of 
  a 
  median 
  inter- 
  

   antennulary 
  rostral 
  point, 
  anteriorly 
  bordered 
  with 
  a 
  transverse 
  groove 
  

   running 
  parallel 
  to 
  and 
  just 
  behind 
  the 
  anterior 
  margin 
  ; 
  there 
  is 
  a 
  

   similar 
  groove 
  bordering 
  the 
  posterior 
  margin 
  of 
  the 
  eyes. 
  The 
  

   first 
  segment 
  of 
  the 
  body 
  is 
  longer 
  than 
  the 
  following 
  ; 
  the 
  postero- 
  

   lateral 
  angles 
  of 
  the 
  first 
  four 
  segments 
  are 
  rounded, 
  those 
  of 
  the 
  

   fifth 
  to 
  seventh 
  segments 
  are 
  right 
  angles. 
  Five 
  or 
  six 
  postabdo- 
  

   minal 
  segments 
  are 
  visible 
  in 
  a 
  dorsal 
  view 
  ; 
  the 
  first 
  five 
  are 
  very 
  

   short, 
  the 
  lateral 
  angles 
  of 
  the 
  second 
  to 
  fourth 
  curve 
  backward 
  and 
  

   are 
  much 
  prolonged 
  and 
  acute 
  or 
  subacute 
  ; 
  the 
  terminal 
  segment 
  

   is 
  widest 
  at 
  base, 
  and 
  beyond 
  this 
  subtriangulate, 
  with 
  the 
  lateral 
  

   margins 
  converging 
  in 
  a 
  gentle 
  curve 
  to 
  the 
  distal 
  extremity, 
  which 
  is 
  

   acute 
  or 
  subacute 
  ; 
  the 
  margins 
  in 
  their 
  distal 
  half 
  are 
  ciliated 
  and 
  

   minutely 
  serrated. 
  The 
  eyes, 
  seen 
  laterally, 
  are 
  oblong 
  (as 
  in 
  C. 
  

   rossii) 
  ; 
  they 
  each 
  occupy 
  rather 
  less 
  than 
  one 
  third 
  of 
  the 
  total 
  

   length 
  of 
  the 
  front 
  margin 
  of 
  the 
  head, 
  and 
  extend 
  but 
  a 
  short 
  dis- 
  

   tance 
  over 
  its 
  inferior 
  surface. 
  The 
  antennules 
  reach 
  nearly 
  to, 
  or 
  

   even 
  a 
  little 
  beyond, 
  the 
  posterior 
  margin 
  of 
  the 
  head 
  ; 
  the 
  joints 
  of 
  

   the 
  peduncle 
  are 
  short, 
  the 
  first 
  two 
  slightly 
  more 
  dilated 
  than 
  the 
  

   third, 
  the 
  fiagellum 
  composed 
  of 
  a 
  great 
  number 
  of 
  very 
  short 
  joints. 
  

   The 
  interantennal 
  plate 
  (" 
  lamina 
  frontalis 
  ") 
  lies 
  between 
  the 
  bases 
  

   of 
  the 
  antennae, 
  its 
  sides 
  diverge 
  slightly 
  from 
  the 
  base 
  to 
  a 
  point 
  

   situate 
  between 
  the 
  antennules 
  and 
  antenna?, 
  where 
  it 
  bears 
  a 
  strong 
  

   tooth 
  ; 
  beyond 
  this 
  its 
  distal 
  extremity 
  is 
  acute, 
  and 
  lies 
  between 
  but 
  

   does 
  not 
  completely 
  separate 
  the 
  antennules. 
  The 
  antennae 
  about 
  

   reach 
  to 
  the 
  posterior 
  margins 
  of 
  the 
  fifth 
  body-segment. 
  The 
  

   first 
  two 
  joints 
  of 
  the 
  peduncles 
  are 
  very 
  short, 
  the 
  third 
  and 
  fourth 
  

   somewhat 
  longer 
  and 
  robust, 
  the 
  fifth 
  yet 
  longer, 
  but 
  slenderer 
  than 
  

   the 
  preceding 
  ; 
  the 
  fiagellum 
  is 
  composed 
  of 
  a 
  great 
  number 
  of 
  joints 
  

   (50-65). 
  Tlae 
  three 
  posterior 
  epimera 
  have 
  their 
  postero-lateral 
  

   angles 
  prolonged 
  and 
  acute. 
  None 
  of 
  the 
  legs 
  of 
  the 
  body 
  are 
  

   ancoral. 
  The 
  ischium- 
  and 
  merus-joints 
  in 
  the 
  first 
  three 
  pairs 
  are 
  

   dilated 
  and 
  dorsally 
  produced. 
  The 
  margins 
  of 
  the 
  third 
  to 
  fifth 
  

   joints 
  in 
  all 
  the 
  legs 
  are 
  clothed 
  with 
  stiff" 
  setae 
  ; 
  the 
  dactyli 
  in 
  all 
  

   are 
  but 
  slightly 
  curved. 
  The 
  bases 
  of 
  the 
  uropoda 
  are 
  prolonged 
  

   at 
  their 
  inner 
  and 
  distal 
  angles 
  into 
  a 
  strong 
  spine 
  ; 
  the 
  rami 
  are 
  

   ciliated 
  on 
  the 
  margins 
  and 
  acute 
  at 
  their 
  apices, 
  the 
  outer 
  much 
  

   narrower 
  and 
  a 
  little 
  shorter 
  than 
  the 
  inner, 
  which 
  reach 
  a 
  little 
  

  

  * 
  Vide 
  Journ. 
  Linn. 
  Soc. 
  xiii. 
  p. 
  511, 
  pi. 
  xxiv. 
  figs. 
  6-11 
  (1878). 
  

  

  