Zoological Society. 371 
Pirvroroma a#Grota. Pleur. testd oblongo-ovatd, tenuiculd, sub- 
ventricosd, spire suturis profundis, striis impressis longitudinali- 
bus et transversis undique decussatd ; aperturd subelongatd, ampld ; 
albicante. 
Hab. Singapore (found among fine sand at the depth of seven fa- 
thoms) ; Cuming. 
PLEUROTOMA CONCENTRIcosTATA. Pleur, testd gracili-fusiformi, 
spird acuminatd, anfractibus creberrimé concentricé costatis, sutu- 
ris simplicibus ; incarnato-fuscescente. 
Hab. ? 
Puevrotoma urraTa. Pleur. testd subfusiformi, basi contractd, 
transversim undique liratd, columella excavatd, callositate superne 
munitd, labro subeffuso, leviter incrassato, sinu lato, amplo, canali 
paululim elongato ; albidd, labri margine intus rufescente. 
Hab. Islands of Luzon and Mindanao, Philippines (found in sandy 
mud at the depth of seven fathoms) ; Cuming. 
Prevrotoma NExA. Pleur. testd ovatd, Tritoniformi, anfractibus 
subrotundatis, plicato-costatis, funiculis exilibus angustis, costas 
super leviter nodulosis, cingulatis ; aperturd subampld, labro pla- 
nulato, sinu lato; canali brevissimo, recurvo ; albd, fusco undique 
tinctd et fasciatd, funiculis suturatioribus. 
Hab, Islands of Masbate and Luzon, Philippines (found under 
stones at low water); Cuming. 
PuevRoTomMA INquINATA. Pleur. testdé acuminato-fusiformi, an- 
Sractibus transversim evwiliter liratis, longitudinaliter creberrime 
striatis ; sinu profundo ; albidd, aurantio-fusco hic illic inquinatd. 
_ Hab. Gindulman, island of Bohol, Philippines (found among coral 
sand at the depth of seven fathoms); Cuming. 
PLEvRoToMA unpDATIcosta. JPleur. testd fusiformi, anfractibus 
superne leviter depressis, costis longitudinalibus undatis concentricé 
ornatd ; albidd. 
Hab. 
Pievroroma PpaxitLus. Pleur. testdé abbreviato-ovatd, spird apice 
acuminatd ; anfractibus superné concavis, unicarinatis, medio cre- 
berrime plicatis, plicarum interstitiis subtilissime striatis, inferne 
liratis ; sinu amplo; nigricante-fuscd. 
Hab. ——? 
PirevrotomaA sorpipA. Pleur. testd ovatd, longitudinaliter subob- 
lique costatd, costarum interstitiis elevatis clathratis ; sordide albd. 
Hab. : 
PLEUROTOMA PLURICARINATA. Pleur. testd subfusiformi-oblongd, 
carinis plurimis acutis cingulatd, quarum interstitia striis longi- 
tudinalibus cancellata; aperturd oblongd, sinu subamplo; canali 
leviter recurvo ; lutescente, aurantio-fusco pallide strigato-tinctd. 
Hab. Island of Burias, Philippines (found in sandy mud at the 
depth of seven fathoms) ; Cuming. 
Prrvroroma compra. Pleur. testd ovatd, spird nodoso-turritd, 
