﻿SPONGIIDA, 
  607 
  

  

  colour, 
  and 
  its 
  cylindrical 
  spicule 
  is 
  curved 
  and 
  apparently 
  stouter 
  

   than 
  that 
  of 
  this 
  species, 
  

  

  26. 
  Reniera, 
  sens, 
  lat., 
  allied 
  to 
  crateriformis, 
  Carter. 
  

   (Plate 
  LIV. 
  fig. 
  i.) 
  

  

  Some 
  small 
  dark-brown 
  fragments 
  of 
  a 
  species 
  belonging 
  to 
  the 
  

   group 
  Crassa 
  (lienieridae), 
  Carter, 
  to 
  which 
  the 
  preceding 
  species 
  is 
  

   related, 
  and 
  which 
  is 
  probably 
  connected 
  with 
  Schmidtia. 
  The 
  

   spicules 
  arc 
  smooth, 
  slightly 
  curved, 
  subcylindrical, 
  tapering 
  some- 
  

   what 
  to 
  the 
  well-rounded 
  ends 
  ; 
  size 
  '48 
  by 
  •028 
  millim. 
  Arrange- 
  

   ment 
  of 
  skeleton 
  as 
  in 
  Schmidtia, 
  viz. 
  massive 
  fibre 
  forming 
  rounded 
  

   meshes 
  (except 
  near 
  the 
  surface). 
  Species 
  of 
  this 
  character 
  are 
  

   especially 
  abundant 
  in 
  the 
  Malay 
  Archipelago, 
  whence 
  B. 
  crateri- 
  

   formis 
  is 
  obtained. 
  Not 
  knowing 
  the 
  external 
  form 
  of 
  the 
  sponge, 
  

   I 
  content 
  myself 
  with 
  indicating 
  the 
  occurrence 
  of 
  this 
  well-marked 
  

   group 
  in 
  this 
  region. 
  

  

  Hab. 
  Providence 
  Island, 
  Mascarene 
  group, 
  19 
  fms. 
  

  

  27. 
  Pellina, 
  sp. 
  

  

  I 
  have 
  httlc 
  doubt 
  of 
  the 
  identity 
  with 
  the 
  species 
  from 
  Australia, 
  

   described 
  at 
  p. 
  413 
  (No. 
  48) 
  of 
  Part 
  I. 
  of 
  this 
  Eoport, 
  of 
  an 
  erect, 
  

   laterally 
  compressed, 
  suboblong 
  specimen 
  in 
  spirit 
  in 
  this 
  collection, 
  

   45 
  millim. 
  high, 
  30 
  millim. 
  in 
  greatest 
  diameter, 
  14 
  millim. 
  in 
  

   greatest 
  thickness. 
  It 
  is 
  squarely 
  truncate 
  above 
  and 
  diminishes 
  

   slightly 
  in 
  diameter 
  towards 
  the 
  broken 
  lower 
  end 
  ; 
  the 
  surface 
  is 
  

   rather 
  uneven, 
  but 
  the 
  dermal 
  membrane 
  is 
  smooth, 
  thin, 
  and 
  trans- 
  

   parent. 
  Vents 
  chiefly 
  at 
  the 
  margin 
  ; 
  round 
  or 
  suborbicular, 
  deep, 
  

   diameter 
  1-5 
  millim. 
  Spicules 
  -33 
  to 
  '35 
  by 
  '019 
  millim. 
  Other 
  

   characters 
  essentially 
  as 
  in 
  Australian 
  specimen, 
  from 
  which 
  it 
  differs 
  

   chiefly 
  in 
  wanting 
  the 
  short 
  lobes. 
  

  

  Hab. 
  Darros 
  Island, 
  Amirante 
  group, 
  22 
  fms. 
  

  

  28. 
  Tedania 
  digitata, 
  Schmidt. 
  

   For 
  synonyms 
  and 
  distribution 
  see 
  this 
  Report, 
  Part 
  I. 
  p. 
  417, 
  

   A 
  fine 
  specimen 
  from 
  Mozambique, 
  very 
  different 
  in 
  external 
  

   characters 
  from 
  those 
  described 
  by 
  me 
  from 
  Australia 
  and 
  Hindostan. 
  

   In 
  this 
  case 
  the 
  vents 
  are 
  strongly 
  developed, 
  and 
  the 
  mass 
  consists 
  

   of 
  four 
  superiorly 
  distinct, 
  more 
  or 
  less 
  bullate 
  tubes, 
  with 
  thin, 
  

   smooth 
  margins, 
  3-9 
  millim. 
  in 
  diameter 
  at 
  their 
  mouths, 
  arising 
  out 
  

   of 
  a 
  very 
  irregularly 
  shaped, 
  massive, 
  suberect 
  base, 
  the 
  surface 
  of 
  

   most 
  of 
  which 
  is 
  broken 
  up 
  into 
  closely-set 
  pits 
  and 
  grooves, 
  about 
  

   1-5 
  miUim. 
  in 
  diameter, 
  which 
  are 
  the 
  external 
  openings 
  of 
  the 
  

   excretory 
  canals 
  of 
  this 
  solid 
  part 
  of 
  the 
  sponge. 
  The 
  colour 
  is 
  

   pale, 
  rather 
  reddish, 
  brown. 
  The 
  acuate 
  measures 
  '19 
  by 
  •0095 
  

   millim,, 
  the 
  tibiella 
  -19 
  by 
  -005 
  millim. 
  While 
  the 
  outward 
  form 
  is 
  

   rather 
  that 
  of 
  Mediterranean 
  specimens, 
  the 
  proportions 
  of 
  the 
  

   spicules 
  agree 
  more 
  closely 
  with 
  examples 
  from 
  Kurrachee 
  and 
  

   Queensland 
  than 
  with 
  Mediterranean 
  or 
  Port-Darwin 
  specimens. 
  

   The 
  spicules 
  of 
  a 
  small 
  in 
  crusting 
  fragment 
  from 
  the 
  Amirante 
  

  

  