﻿8P0NGIIDA. 
  385 
  

  

  8. 
  Stelospongus 
  intertextus. 
  

   ? 
  Hyatt, 
  Mem. 
  Bosf. 
  Soc. 
  ii. 
  p. 
  o.")2. 
  

  

  A 
  fragment 
  of 
  what 
  was 
  probably 
  either 
  a 
  cup-shaped 
  or 
  flabel- 
  

   late 
  specimen 
  is, 
  perhaps, 
  referable 
  to 
  this 
  species 
  : 
  the 
  structure 
  of 
  

   the 
  skeleton 
  agrees 
  fairly 
  with 
  Hyatt's 
  description 
  ; 
  at 
  some 
  little 
  

   distance 
  below 
  the 
  surface 
  the 
  primary 
  skeleton-lines 
  are 
  very 
  stout, 
  

   viz. 
  -14 
  millim. 
  and 
  upwards 
  in 
  diameter, 
  and 
  mostly 
  cored, 
  not 
  

   coated, 
  by 
  foreign 
  material 
  ; 
  the 
  skeleton 
  is 
  elastic 
  and 
  very 
  com- 
  

   pressible. 
  

  

  Hah. 
  Port 
  Jackson, 
  0-5 
  fms. 
  

  

  Distribution. 
  Mauritius? 
  (l/i/att)? 
  

  

  CARTEEISPONGIA. 
  

  

  Halispongia, 
  Bowerbmik, 
  Mon. 
  Brit. 
  Spoiu/. 
  i. 
  p. 
  207 
  (nee 
  De 
  Blaiti- 
  

  

  ville). 
  

   Carteriospongia, 
  Hyatt, 
  Mem. 
  Bast. 
  Sac. 
  ii. 
  p. 
  540. 
  

   Mauricea, 
  Carter, 
  Ann. 
  8j- 
  Mag. 
  N. 
  H. 
  (4) 
  xx. 
  p. 
  174. 
  

  

  De 
  Elainville 
  founded 
  the 
  genus 
  tLdispomjia 
  (Man. 
  Actinol. 
  

   p. 
  532) 
  to 
  contain 
  a 
  number 
  of 
  sponges, 
  of 
  which 
  the 
  first 
  is 
  Sponqia 
  

   jiapillaris, 
  Grant 
  (=HaUcJi.ondria 
  panieea, 
  Johnston), 
  and 
  which 
  

   are 
  stated 
  in 
  the 
  generic 
  diagnosis 
  to 
  contain 
  siliceous 
  spicules 
  ; 
  

   therefore 
  Bowerbank 
  is 
  clearly 
  wrong 
  when 
  he 
  describes 
  and 
  figures 
  

   (Mon. 
  Brit, 
  Spong, 
  i. 
  pp. 
  207, 
  278) 
  an 
  obviously 
  horny 
  sponge 
  as 
  

   typical 
  of 
  the 
  genus. 
  The 
  sponges 
  which 
  he 
  has 
  referred 
  by 
  name 
  to 
  

   this 
  genus 
  {H. 
  cJioanoides, 
  mantelli, 
  ventriculoides, 
  stellifera) 
  appear 
  

   to 
  be 
  all 
  in 
  accordance 
  with 
  his, 
  but 
  not 
  with 
  De 
  Blainville's 
  idea 
  

   of 
  the 
  genus. 
  Hyatt 
  formed 
  the 
  genus 
  Carteriospongia 
  nominally 
  

   for 
  a 
  species 
  called 
  by 
  him 
  otaliitica, 
  Esper, 
  which 
  is, 
  however, 
  

   apparently 
  lamelJosa, 
  Esper, 
  to 
  the 
  plate 
  of 
  which 
  he 
  refers. 
  This 
  

   sjjecies 
  differs 
  in 
  outward 
  form 
  from 
  the 
  cup- 
  shaped 
  or 
  palmate 
  

   Haiispomjia' 
  of 
  Bowerbank, 
  but 
  agrees 
  with 
  them 
  in 
  the 
  skeleton-" 
  

   structure, 
  while 
  some 
  Haiispomjia' 
  agree 
  in 
  possessing 
  the 
  cabbage- 
  

   like 
  growth 
  which 
  characterizes 
  Hyatt's 
  typical 
  Carteriospongice. 
  

   So 
  many 
  species 
  (Halinpongia 
  ventriculoides, 
  Spongia 
  Jissurata, 
  

   Lamk., 
  &c.), 
  which 
  appear 
  to 
  agree 
  in 
  all 
  other 
  points 
  with 
  Hyatt's 
  

   conception 
  of 
  the 
  genus, 
  have, 
  nevertheless, 
  the 
  secondary 
  fibres 
  

   sand-cored, 
  that 
  I 
  venture 
  to 
  omit 
  the 
  character 
  " 
  absence 
  of 
  foreign 
  

   matter 
  from 
  the 
  secondary 
  or 
  connecting 
  fibres," 
  which 
  he 
  attributes 
  

   not 
  only 
  to 
  the 
  genus, 
  but 
  to 
  the 
  entire 
  family 
  Phyllospongiadse 
  

   in 
  which 
  he 
  ])laces 
  it. 
  Schulzc 
  (Z. 
  wiss. 
  Zool. 
  xxxii. 
  p. 
  013) 
  upholds 
  

   this 
  genus 
  as 
  a 
  true 
  member 
  of 
  the 
  family 
  Spongiidae 
  as 
  revised 
  by 
  

   himself. 
  In 
  the 
  second 
  part 
  of 
  this 
  work 
  I 
  shall 
  explain 
  the 
  reasons 
  

   why 
  I 
  cannot 
  admit 
  Mauricea 
  as 
  a 
  distinct 
  genus. 
  

  

  9. 
  Carterispongia 
  otaliitica. 
  

  

  Spongia 
  otulutica, 
  Esper, 
  Pjiaiizenth. 
  Fortsetz. 
  i. 
  p. 
  209, 
  pi. 
  Ixi. 
  

  

  figs. 
  7, 
  8. 
  

   Halispongia 
  ventriculoides, 
  Boiccrhank, 
  P. 
  Z. 
  S. 
  1874, 
  p. 
  301, 
  pl. 
  xlvii. 
  

  

  figs. 
  1, 
  2. 
  

  

  2c 
  

  

  