﻿296 
  COLLECTIONS 
  FKOM 
  MELA-HESLA.. 
  

  

  4-6 
  fms., 
  in 
  Dr. 
  Coppinger's 
  second 
  collection 
  (No. 
  130), 
  which 
  has 
  

   the 
  terminal 
  postabdominal 
  segment 
  broken. 
  

  

  These 
  specimens, 
  although 
  males, 
  have 
  a 
  distinct 
  dorsal 
  carina 
  on 
  

   the 
  carapace, 
  in 
  this 
  particular 
  agreeing 
  with 
  Mr. 
  Haswell's 
  descrip- 
  

   tion 
  of 
  the 
  female 
  and 
  differing 
  from 
  the 
  specimens 
  he 
  regards 
  as 
  

   the 
  males 
  of 
  this 
  species. 
  

  

  P. 
  gramdosiis 
  comes 
  very 
  near 
  to 
  P. 
  monoceros, 
  Fabricius, 
  which 
  

   species, 
  however, 
  has 
  no 
  lateral 
  spines 
  on 
  the 
  margins 
  of 
  the 
  terminal 
  

   segment. 
  

  

  18. 
  Penseus 
  velutinus, 
  Dcma. 
  

  

  Here 
  are 
  referred 
  two 
  specimens 
  (one 
  of 
  which 
  is 
  an 
  adult 
  male) 
  

   from 
  Port 
  Darwin, 
  12 
  fms. 
  ; 
  a 
  specimen 
  from 
  Albanj' 
  Island, 
  3-4 
  

   fms.; 
  and 
  a 
  small 
  example 
  from 
  Thursday 
  Island, 
  4-5 
  fms. 
  

  

  For 
  remarks 
  upon 
  the 
  specific 
  characters 
  and 
  geographical 
  range 
  

   of 
  this 
  widely-distributed 
  species, 
  I 
  may 
  refer 
  to 
  my 
  paper 
  on 
  

   Crustacea 
  from 
  the 
  coast 
  of 
  Senegambia 
  * 
  and 
  memoir 
  on 
  the 
  

   Penseideaf. 
  

  

  I 
  may 
  add 
  that 
  in 
  P. 
  velutinus 
  there 
  are 
  present 
  an 
  antenual 
  

   and 
  hepatic 
  spine, 
  and 
  a 
  third 
  spine 
  (the 
  branchiostegal 
  ?) 
  situated 
  

   on 
  the 
  anterior 
  margin 
  of 
  the 
  carapace 
  below 
  the 
  eye-peduncles 
  ; 
  

   also 
  usually 
  a 
  minute 
  supraorbital 
  spinule 
  or 
  denticle, 
  or 
  a 
  notch 
  

   indicative 
  of 
  its 
  position, 
  in 
  the 
  anterior 
  margin. 
  

  

  19. 
  Penaeus 
  batei. 
  (Plate 
  XXXII. 
  fig. 
  D.) 
  

  

  The 
  carapace 
  and 
  postabdomen 
  are 
  covered 
  with 
  a 
  very 
  short 
  

   close 
  pubescence 
  as 
  in 
  P. 
  velutinus. 
  The 
  carapace 
  has 
  scarcely 
  any 
  

   traces 
  of 
  sulci, 
  and 
  has 
  a 
  well 
  -developed 
  antennal 
  and 
  a 
  small 
  

   hepatic 
  spine 
  ; 
  also 
  a 
  very 
  small 
  pterygostomian 
  spine 
  or 
  spinule. 
  

   The 
  rostrum 
  scarcely 
  reaches 
  beyond 
  the 
  ends 
  of 
  the 
  peduncles 
  of 
  

   the 
  antennules 
  ; 
  it 
  is 
  scarcely 
  prolonged 
  at 
  all 
  backward 
  as 
  a 
  median 
  

   longitudinal 
  dorsal 
  crest 
  : 
  its 
  distal 
  extremity 
  curves 
  slightly 
  up- 
  

   ward 
  and 
  is 
  acute 
  ; 
  its 
  lower 
  margin 
  is 
  entire 
  ; 
  its 
  upper 
  margin 
  is 
  

   armed 
  with 
  two 
  teeth 
  placed 
  just 
  in 
  front 
  of 
  the 
  anterior 
  margin 
  of 
  

   the 
  carapace 
  : 
  behind 
  these, 
  on 
  the 
  gastric 
  region 
  of 
  the 
  carapace, 
  is 
  

   a 
  rudimentary 
  tooth. 
  The 
  third 
  to 
  sixth 
  segments 
  of 
  the 
  post- 
  

   abdomen 
  are 
  cariuated 
  in 
  the 
  dorsal 
  median 
  line 
  ; 
  the 
  carina 
  on 
  the 
  

   sixth 
  segment 
  ends 
  in 
  a 
  small 
  spinule 
  on 
  the 
  posterior 
  margin 
  of 
  

   this 
  segment. 
  The 
  terminal 
  segment 
  is 
  slightly 
  longer 
  than 
  the 
  

   preceding, 
  narrow, 
  longitudinally 
  cariuated 
  above, 
  and 
  terminates 
  in 
  

   a 
  strong 
  spine, 
  on 
  either 
  side 
  of 
  which 
  are 
  three 
  lateral 
  spines, 
  of 
  

   which 
  those 
  nearest 
  to 
  the 
  distal 
  extremity 
  are 
  smaller 
  and 
  placed 
  

   immediately 
  above 
  the 
  preceding. 
  The 
  eyes 
  are 
  large, 
  much 
  more 
  

   dilated 
  than 
  their 
  short 
  peduncles. 
  The 
  terminal 
  joint 
  of 
  the 
  

   peduncles 
  of 
  the 
  antennules 
  is 
  shorter 
  than 
  the 
  preceding 
  ; 
  the 
  

   tiagella 
  subequal 
  and 
  very 
  short, 
  not 
  so 
  long 
  as 
  the 
  peduncles. 
  The 
  

  

  * 
  Ann. 
  & 
  Mag. 
  Nat. 
  Hist. 
  ser. 
  5, 
  viii. 
  p. 
  367 
  (1881). 
  

   t 
  Proc. 
  Zool. 
  Soc. 
  p. 
  304 
  (1878). 
  

  

  