NEW  SPECIES  OF  CALYPTR^IDiE. 
197 
(B.  Cyatho  hemiconico,  longitudinaliter  quasi  diviso.    (Calyptrsea,  Less.) 
2.   CALYPTRiEA  CORRUGATA. 
Tab.  XXVII.  Fig.  2. 
Cal.  testa  subalbidd,  suborhiculari,  subdepressd,  corrugatd,  intus  nitente ;  cyatho  concentrice 
lineato,  producto  ;  epidermide  fused. 
Diam.  |-  poll.,  alt.  . 
Hab.  in  America  Centrali.  (Giiacomayo.) 
Found  under  stones  at  a  depth  of  fourteen  fathoms. 
3.  Calyptr^a  varia. 
Tab.  XXVII.  Fig.  3. 
Cal.  testd  albidd,  suborbiculari,  crassiusculd,  longitudinaliter  creberrime  striatd ;  cyatho  con- 
centrice lineato,  crassiusculo,  producto. 
Diam.  14  poll.,  alt.  max.      alt.  min.  f . 
Hab.  in  Oceano  Pacifico.    (Lord  Hood's  Island,  the  GalJapagos,  and  the  Island  of 
Muerte  in  the  Bay  of  Guayaquil.) 
This  is  a  very  variable  species  allied  to  Cal.  equestris,  Lam.,  and  taking  almost  every 
shape  which  a  Calyptrfsa  can  assume.  It  differs  in  thickness  according  to  locality  and 
circumstances.  The  thickest  individuals  were  found  at  the  Gallapagos  and  Lord  Hood's 
Island ;  at  the  former  place  on  shells,  at  the  latter  on  the  reefs.  Those  from  Muerte 
are  the  thinnest  and  the  most  depressed. 
4.  Calyptr/ea  cepacea. 
Tab.  XXVII.  Fig.  4. 
Cal.  testd  albd,  suborbiculari,  subconcavd,  tenui,  diaphand,  striis  numerosis  subcorrugatd, 
intus  nitente ;  cyathi  terminationibus  lanceolatis. 
Long.  1-rV  poll.,  lat.  1-^,  alt.  ^. 
Hab.  in  sinu  Guayaquil.    (Island  of  Muerte.) 
This  was  dredged  up,  adhering  to  dead  shells,  from  sandy  mud  at  a  depth  of  eleven 
fathoms,  by  Mr.  Cuming.  Besides  other  differences,  the  terminating  points  of  the 
divided  cyathus  are  much  more  lanceolate  than  they  are  in  Cal.  varia. 
5.  Calyptr^ea  cornea. 
Tab.  XXVII.  Fig.  5. 
Cal.  testd  suborbiculari,  complanatd,  albidd,  subdiaphand,  concentrice  lineatd  et  radiatim 
striatd,  intils  nitente. 
2  D  2 
