328 
DE.  J.  S.  BOWEEBAJn^K  0^"  THE  AXATOIMT 
PLATE  XXV. 
Fig.  1.  Dentato-palmate  angulated  anchoeate,  from  Spongia  lohata,  Montagu,  Hali- 
chondria  lohata,  Johnston,  an  adult  spiculum,  xl060  linear:  page  306. 
Fig.  2.  Dentato-palmate  angulated  anchoeate,  an  immature  specimen,  from  the  same 
sponge  as  fig.  1,  Xl060  linear:  page  306. 
Fig.  3.  Dentato-palmate  angulated  anchoeate,  from  the  same  sponge  as  fig.  1 ; a ^iew 
in  profile  to  exhibit  the  angulated  character  of  the  hand,  x 1060  linear: 
page  306. 
Fig.  4.  Dentato-palmate  inequi-anchoeate,  first  stage  of  development,  x 260  linear : 
page  304. 
Fig.  5.  Dentato-palmate  inequi-anchoeate,  second  stage  of  development,  x260  linear: 
page  304. 
Fig.  6.  Dentato-palmate  inequi-anchoeate,  third  stage  of  development,  x 260  hnear : 
page  305. 
Fig.  7.  Dentato-palmate  inequi-anchoeate,  an  adult  spiculum,  showing  the  fully-pro- 
duced distal  terminal  hastate  tooth,  x 260  linear : page  305. 
Fig.  8.  Dentato-palmate  inequi-anchoeate,  from  the  same  sponge  as  fig.  7,  showing 
the  effects  of  incomplete  development  or  malformation,  X 260  linear. 
Spicula  of  the  Sarcode. 
Fig.  9.  Attenuato-stellate,  from  Pachymatisma  Johnstonia,  Boiveebank,  MS.,  x 660 
linear : page  307. 
Fig.  10.  Cylindeo-stellate,  from  Pachymatisma  Johnstonia^  Boweebank,  x 660  linear : 
page  307. 
Fig.  11.  Ceassato-cylindeo-stellate,  from  Tethea  rohusta,  Botyeebank,  MS.,  xl060 
linear:  page  307. 
Fig.  12.  Clavated  subspheeo-stellate,  from  Tethea  Ingalli^  Boiveebane,  MS.,  xl060 
linear:  page  307. 
Fig.  13.  Clavated  spheeo-stellate,  from  Geodia  Parretti,  Boweebank,  MS.,  xl060 
linear : page  307. 
Fig.  14.  Subspheeo-stellate,  from  Tethea  Ingalli,  Boiveebank,  MS.,  x660  linear: 
page  307. 
Fig.  15.  Spheeo-stellate,  from  Tethea  rohusta,  Boiveebank,  MS.,  x660  linear:  page 
308. 
Fig.  16.  Spheeo-stellate,  with  cylindeical  subpoliate  eadii,  from  an  unknown 
sponge,  X 400  linear : page  308. 
Fig.  17.  A spheeo-stellate  spiculum,  exhibiting  the  central  canals  in  the  radii,  X 660 
linear:  page  308. 
Fig.  18.  Flongo-attenuato-stellate,  from  Tethea  miiricata,  Boweebank,  MS.,  xl060 
linear:  page  308. 
