﻿SPONGIIDA. 
  

  

  425 
  

  

  Schmidt's 
  Portuguese 
  specimen 
  differs 
  from 
  the 
  specimen 
  which 
  

   ■was 
  originally 
  described 
  bj* 
  him 
  (and 
  which 
  was 
  from 
  Triest) 
  in 
  its 
  

   more 
  massive 
  habit 
  and 
  in 
  the 
  much 
  larger 
  size 
  of 
  its 
  bihamate, 
  

   which 
  (as 
  I 
  find 
  in 
  the 
  slide 
  in 
  the 
  British 
  Museum) 
  measures 
  "04 
  

   to 
  -07 
  millim. 
  in 
  length, 
  or 
  '0337 
  ('337 
  millim, 
  seems 
  to 
  be 
  a 
  mis- 
  

   print), 
  as 
  he 
  himself 
  states 
  at 
  p. 
  40 
  of 
  the 
  ' 
  Spong. 
  Atl. 
  Geb.' 
  

   Isodktya 
  ju(josa 
  agrees 
  closely 
  with 
  this 
  form 
  in 
  the 
  proportions 
  

   of 
  its 
  spicules, 
  but 
  was 
  based 
  on 
  a 
  very 
  young 
  specimen, 
  so 
  that 
  its 
  

   external 
  characters 
  can 
  hardly 
  be 
  appealed 
  to 
  ; 
  it 
  differs 
  from 
  the 
  

   specimens 
  described 
  below 
  in 
  its 
  rough 
  surface. 
  

  

  Several 
  specimens 
  have 
  lately 
  been 
  added 
  to 
  the 
  National 
  col- 
  

   lection 
  from 
  the 
  neighbourhood 
  of 
  Ivurrachee 
  (Hindostan), 
  which 
  

   consist 
  usually 
  of 
  stout, 
  horizontally 
  spreading 
  and 
  anastomosing 
  

   lobes, 
  with 
  a 
  row 
  of 
  vents 
  of 
  various 
  sizes, 
  about 
  10 
  millim. 
  or 
  less 
  

   in 
  diameter, 
  ranged 
  along 
  their 
  upper 
  margins. 
  The 
  surface 
  of 
  

   the 
  sponge 
  is 
  quite 
  smooth 
  in 
  most 
  places, 
  and 
  the 
  texture 
  soft 
  

   and 
  brittle. 
  The 
  spiculation 
  closely 
  resembles 
  that 
  of 
  Reniera 
  

   Jib 
  id 
  at 
  a. 
  

  

  Lastly, 
  in 
  the 
  present 
  collection 
  occur: 
  — 
  (i.) 
  a 
  small 
  but 
  massive 
  

   soft 
  specimen 
  from 
  Torres 
  Straits, 
  with 
  a 
  few 
  oscula 
  on 
  its 
  summit 
  ; 
  

   it 
  has 
  a 
  somewhat 
  pyriform 
  shape, 
  apparently 
  owing 
  to 
  its 
  having 
  

   grown 
  upon 
  the 
  stem 
  of 
  what 
  seems 
  to 
  be 
  a 
  filamentous 
  Hydroid 
  ; 
  

   (ii.) 
  a 
  fragmentary 
  specimen, 
  which 
  apparently 
  had 
  when 
  perfect 
  the 
  

   same 
  general 
  habit 
  as 
  the 
  Kurrachee 
  specimens 
  just 
  referred 
  to 
  ; 
  the 
  

   spiculation 
  is 
  similar. 
  I 
  propose 
  to 
  unite 
  all 
  these 
  forms 
  except 
  

   I.Jugosa 
  under 
  the 
  name 
  Jihulata 
  ; 
  I 
  give 
  the 
  spiculations 
  of 
  all 
  for 
  

   comparison 
  : 
  — 
  

  

  The 
  slender 
  proportions 
  of 
  the 
  acerate 
  and 
  the 
  soft 
  texture 
  of 
  

   the 
  sponge 
  distinguish 
  the 
  species 
  from 
  G. 
  varia, 
  Bowk., 
  and 
  its 
  

   distinct 
  vents 
  from 
  G. 
  couchi, 
  Bowk. 
  

  

  Hah. 
  Torres 
  Straits, 
  10 
  fms. 
  ; 
  Port 
  Jackson, 
  0-5 
  fms. 
  

  

  Distribution. 
  Adriatic, 
  coast 
  of 
  Portugal 
  (ScJimidt) 
  ; 
  coast 
  near 
  

   Kurrachee 
  (coll. 
  3Ius. 
  Brit.). 
  

  

  61. 
  Gellius 
  cymiformis. 
  (Plate 
  XLI. 
  fig. 
  z.) 
  

  

  Spongia 
  cymajformis, 
  Esper, 
  Pflanzenth. 
  Fortsetz. 
  i. 
  p. 
  43, 
  Spong. 
  

  

  pi. 
  Ixix. 
  

   Isodictya 
  cympeforniis, 
  Elders, 
  Espersch. 
  Spong. 
  p. 
  24. 
  

  

  The 
  external 
  characters 
  agree 
  well 
  with 
  those 
  of 
  Espor's 
  species, 
  

  

  