MR.  BRODERIP  ON  CLAVAGELLA. 
265 
Clavagella  elongata. 
Tab.  XXXV.  Figg.  1—4. 
Clav.  camera  elongato-ovatd;  valvd  liberd  elongatd,  subtrigond,  cotivexd,  externe  concentrice 
valde  rugosd,  intits  nitente;  umbone  acuto. 
Hab.  in  Oceano  Pacifico  ? 
Mus.  Goldsmid. 
The  Astrceopora  in  which  this  Clavagella  is  chambered  approaches  very  closely  to  one 
brought  by  Mr.  S.  Stutchbury  from  Bow  Island,  or  Hao,  in  the  Pacific  Ocean,  and  I 
have  therefore  suggested  that  Ocean  as  its  probable  locality.  The  wall  of  the  coral 
chamber  against  which  the  free  valve  rested,  gives  as  exact  an  impression  of  the  ex- 
ternal rugosities  of  that  valve  as  if  it  had  been  applied  to  a  surface  of  wax. 
Clavagella  lata. 
Tab.  XXX.  Figg.  8—10  (Testa)  ;  11—16  (Animal). 
Clav.  camerd  rotundato-ovatd ;  valvd  liberd  latiusculd,  subtrigond,  subconvexd,  externe  con- 
centrice rugosd,  intus  nitente  ;  umbone  subrotundato. 
Hab.  in  Oceano  Pacifico. 
Mus.  Cuming. 
Both  valves  are  nacreous  internally,  and  the  muscular  impressions  ^  especially  in  the 
fixed  valve,  are  very  strong. 
Clavagella  Melitensis. 
Tab.  XXXV.  Figg.  5—8. 
Clav.  testd  subrotundatd,  rugosd,  ititus  subnitente ;  tubo  longitudinaliter  corrugato. 
Hab.  ad  Melitam. 
Mus.  Cuming,  Miller. 
Mr.  G.  B.  Sowerby,  finding  that  I  was  writing  upon  this  subject,  forwarded  to  me, 
with  his  usual  liberality,  two  specimens  of  Clavagella  from  Malta.  They  are  in  an 
argillo-calcareous  tufa  ?  One  of  them  belongs  to  Mr.  Cuming,  the  other  to  T.  Miller, 
Esq.,  Surgeon  R.N.,  who  brought  them  to  this  country. 
The  loose  valve  of  Mr.  Cuming's  specimen^  is  not  so  much  rounded  as  that  of 
Mr.  Miller's^,  nor  are  its  corrugations  so  large  and  distant.  Mr.  Cuming's  specimen  has 
a  considerable  portion  of  the  longitudinally  corrugated  tube^  still  projecting  from  the 
rock ;  but  Mr.  Miller's  appears  to  have  been  abraded  till  it  became  even  with  the  sur- 
'  Plate  XXX.  Figg.  8  &  10,/'.,  g'.,  &  h'.  Plate  xxxv.  Fig.  5. 
3  Ibid.  Figg.  6—8.  ■*  Ibid.  Fig.  5.  a. 
