202 
MR.  BRODERIP'S  DESCRIPTIONS  OF  SOME 
17.  CalyptrjEA  striata. 
Tab.  XXVIII.  Fig.  6. 
Cal.  testa  sordide  alba,  suhorbiculatd,  subconicd,  subturbinatd,  striis  longitudinalibus  ele- 
vatis  creberrimis  corrugatd,  intus  fusco-Jlavescente. 
Diam.  -ff  poll.,  alt. 
Hab.  ad  Valparaiso. 
Found  on  shells  in  sandy  mud,  at  a  depth  varying  from  forty-five  to  sixty  fathoms. 
18.  CalyptrjEa  conica. 
Tab.  XXVIII.  Fig.  7. 
Cal.  testd  conicd,  fused  albido  maculatd,  subturbinatd. 
Diam.  1 1.  poll.,  alt. 
Hab.  ad  Xipixapi  et  ad  Salango. 
Found  attached  to  shells  in  deep  water. 
Subgenus  Crepipatella,  Less. 
Lamina  rotundata,  apice  laterali  et  subterminali. 
19.  Calyptr^ea  foliacea. 
Tab.  XXVIII.  Fig.  9. 
Cal.  testd  suborbiculari,  albidd,  foliaced,  intus  castaned  vel  albd  castaneo  varid. 
Diam.  1  poll.,  alt.  -f. 
Hab.  ad  Aricam  Peru  vise  saxis  adhserens. 
This  Crepipatella,  which  bears  no  remote  resemblance  to  the  upper  valve  of  some  of 
the  Chamcs  when  viewed  from  above,  was  found  on  exposed  rocks  near  the  shore. 
20.  CaLYPTR^EA  DORSATA. 
Tab.  XXVIII.  Fig.  10. 
Cal.  testd  subalbidd,  planiusculd,  costis  longitudinalibus  irregularibus  rugosd,  intus  medio 
fusco-violaced. 
Diam.  -f-  poll.,  lat.  -f-. 
Hab.  ad  Sanctam  Elenam. 
The  back  of  this  shell  is  not  unlike  the  upper  valve  of  some  of  the  Terebratula. 
Found  on  dead  shells  in  sandy  mud,  at  a  depth  of  six  fathoms. 
