4 
t \ 
Name of species 
Type or 
or ig. spec. 
Coll, in 
u.s. 
Remarks » 
?*lahellum append! culatum 
(Brongniart ) 
P.T.C. 
UfAjUA, 
f lab e Hum fiuhium Duncan 
C-0 S.L. 
•Z. CljL LouCc* (AtAAA^ hx.h Jk*j£LlXAjL 
Plato elium exaratuia Duncan 
G.S.L. 
H 
Placotrochus sawkinsi 
Duncan 
G.S.L. 
U(t*L 
?lacotrochus costatus 
Duncan 
G.S.L. 
R.T.H. 
atkixA, fatui/u/Z 
fcyton'* 
Place brcchus lonsdalei 
Duncan . 
s 
G.S.L. 
Placotrochus alveolus 
Duncan. 
E.M.I.H. 
R.T.H. 
U.S.H.M* 
iL6MsLl4> P^^xrtxyiJL, 
tku*. f 
Placocyathus to arret ti 
Duncan. 
B.M.U.H. 
R.T.H. 
U.S.H.M, 
Placocyathus variatoilis 
Duncan. 
i 
[ 
G.S.L. 
M.C.Z. 
P.A.S. 
O- tC . 
Placocyathus cost at us 
Duncan. 
B.M.H.H. 
M.C.Z. 
P.A.S. 
0- 1C 
Placocyathus moorei 
Duncan. 
G.S.L. 
R.T.H., 
U.S.R.M. 
tw^'p 1 GicJu 9 'fU4A^3i/ 1 
'h rr *~ L d} ^ (+ayu^<£[fujoQ 
Ltco. 
