﻿294 
  COLLECTIONS 
  FROM 
  MELANESIA. 
  

  

  I 
  regard 
  the 
  Ancliistia 
  c/randis 
  of 
  Stimpson, 
  from 
  Ousima*, 
  as 
  

   synonymous 
  with 
  Anchistia 
  petitthouarsi. 
  

  

  The 
  differences 
  in 
  the 
  proportions 
  of 
  the 
  second 
  legs 
  in 
  our 
  speci- 
  

   men 
  and 
  that 
  described 
  by 
  Mr. 
  Stimpson 
  may 
  perhaps 
  be 
  due 
  to 
  

   Bex. 
  Stimpson 
  does 
  not 
  mention 
  the 
  number 
  of 
  the 
  teeth 
  (if 
  any) 
  

   on 
  the 
  inferior 
  margin 
  of 
  the 
  rostrum 
  in 
  his 
  example 
  ; 
  but 
  as 
  he 
  

   says 
  " 
  A. 
  ensifronti 
  affinis," 
  it 
  may 
  be 
  presumed 
  that, 
  as 
  in 
  Dana's 
  

   species, 
  there 
  are 
  three 
  teeth 
  on 
  the 
  inferior 
  margin 
  of 
  the 
  rostrum, 
  

   and 
  also 
  that 
  there 
  is, 
  as 
  in 
  that 
  species, 
  a 
  supraocular 
  spine. 
  

  

  Anchistia 
  inci'quimana 
  of 
  Heller 
  is, 
  according 
  to 
  Ivossmannf, 
  also 
  

   %y■ao^lyTSlo\^?.^\ih.A.'p€tittllOuars^. 
  It 
  is 
  remarkable 
  that 
  neither 
  in 
  

   the 
  figure 
  of 
  Savigny, 
  nor 
  in 
  Heller's 
  long 
  description 
  of 
  A. 
  incpqui- 
  

   mana 
  in 
  the 
  ' 
  BeitrJige 
  zur 
  Crustaceen-Fauna 
  des 
  rothen 
  Meeres,' 
  

   can 
  I 
  find 
  any 
  indication 
  of 
  the 
  supraocular 
  spine 
  ; 
  so 
  that 
  our 
  spe- 
  

   cimen 
  may 
  after 
  all 
  belong 
  to 
  a 
  distinct 
  species. 
  

  

  14. 
  Coralliocaris 
  ? 
  tridentata. 
  (Plate 
  XXXII. 
  fig. 
  C.) 
  

  

  The 
  body 
  is 
  rounded 
  above 
  and 
  not 
  compressed 
  ; 
  the 
  anterior 
  

   margin 
  of 
  the 
  carapace 
  bears 
  a 
  strong 
  spine 
  outside 
  of 
  the 
  eye- 
  

   peduncles 
  and 
  above 
  the 
  basal 
  anteunal 
  scale. 
  The 
  rostrum 
  is 
  short, 
  

   not 
  reaching 
  to 
  the 
  end 
  of 
  the 
  peduncles, 
  and 
  has 
  three 
  spiniform 
  

   teeth 
  on 
  its 
  upper 
  margin 
  ; 
  its 
  lower 
  margin 
  is 
  entire 
  ; 
  the 
  apex 
  curves 
  

   gently 
  upward 
  and 
  is 
  acute. 
  The 
  segments 
  of 
  the 
  postabdomen 
  

   are 
  without 
  spinules 
  ; 
  the 
  terminal 
  segment 
  has 
  four 
  small 
  mobile 
  

   spinules 
  on 
  its 
  upper 
  surface 
  near 
  the 
  lateral 
  margins, 
  and 
  the 
  

   somewhat 
  rounded 
  apex 
  is 
  tipped 
  with 
  a 
  few 
  short 
  setfe. 
  The 
  eyes 
  

   are 
  rather 
  short, 
  robust, 
  and 
  reach 
  about 
  halfway 
  to 
  the 
  apex 
  of 
  

   the 
  rostrum. 
  The 
  antepenultimate 
  joint 
  of 
  the 
  peduncles 
  of 
  the 
  

   antennules 
  is 
  about 
  as 
  long 
  as 
  the 
  two 
  following 
  taken 
  together 
  ; 
  

   these 
  are 
  short 
  and 
  of 
  equal 
  length 
  ; 
  the 
  longer 
  flagellum 
  is 
  broken. 
  

   in 
  the 
  single 
  specimen 
  examined, 
  the 
  shorter 
  is 
  slightly 
  bipartite 
  at 
  

   its 
  distal 
  end. 
  The 
  basal 
  antennal 
  scales 
  are 
  shorter 
  than 
  the 
  

   peduncles 
  of 
  the 
  antennules, 
  rounded 
  and 
  ciliated 
  at 
  the 
  distal 
  ends, 
  

   and 
  with 
  a 
  very 
  small 
  spinule 
  on 
  the 
  outer 
  margin. 
  The 
  ante- 
  

   penultimate 
  joint 
  of 
  the 
  outer 
  maxillipedes 
  is 
  very 
  little 
  longer 
  and 
  

   broader 
  than 
  the 
  penultimate 
  joint, 
  which 
  about 
  equals 
  the 
  terminal 
  

   joint 
  in 
  length. 
  The 
  anterior 
  legs 
  (the 
  left 
  only 
  is 
  perfect) 
  are 
  very 
  

   slender 
  ; 
  the 
  wrist 
  much 
  exceeds 
  the 
  hand 
  in 
  length, 
  the 
  slender 
  

   'palm 
  about 
  equals 
  the 
  fingers. 
  Of 
  the 
  second 
  legs 
  also 
  only 
  the 
  

   left 
  is 
  perfect 
  ; 
  this 
  limb 
  has 
  the 
  joints 
  smooth 
  and 
  unarmed, 
  the 
  

   merus 
  longer 
  than 
  the 
  carpus, 
  which 
  is 
  less 
  than 
  half 
  the 
  length 
  of 
  

   the 
  palm, 
  which 
  is 
  much 
  shrivelled, 
  but 
  its 
  lower 
  margin 
  appears 
  to 
  

   have 
  been 
  carinated 
  ; 
  the 
  fingers 
  are 
  less 
  than 
  half 
  the 
  length 
  of 
  

   the 
  palm, 
  acute 
  at 
  their 
  apices, 
  and 
  without 
  teeth 
  on 
  their 
  inner 
  

   margins. 
  The 
  third 
  legs 
  are 
  robust, 
  with 
  the 
  merus 
  and 
  penulti- 
  

   mate 
  joints 
  compressed 
  ; 
  the 
  dactyl 
  minute, 
  curved, 
  and 
  with 
  a 
  

   minute 
  tooth 
  on 
  the 
  lower 
  margin. 
  The 
  following 
  legs 
  are 
  imperfect. 
  

  

  * 
  Proc. 
  Acad. 
  Nat. 
  Sci. 
  Philad. 
  p. 
  39 
  (]8(>0). 
  

  

  t 
  Zool. 
  Ergebn. 
  Reis. 
  roth. 
  Meer. 
  ii. 
  p. 
  83 
  (1880). 
  

  

  