Zoological Society. 269 
which is worthy of observation; above the brown band it is very 
closely impressly striated across; below it, it is merely distantly 
grooved. A difference between the transverse sculpture of the upper 
and lower portions of the whorls is rarely met with. 
Mirra pecuniaRis. Mitr. testd elongatd, anfractibus levibus, con- 
cavis, carind unicd prominente superne ornatis ; albidd, fascid latd 
luteo-fuscescente cingulatd ; columella biplicatd. 
Conch. Icon., Mitra, pl. 36. f. 305. 
Hab. Puerto Galero, island of Mindoro, Philippines (found under 
stones at low water) ; Cuming. 
This species may be easily distinguished by the hollow character 
which is imparted to the whorls by the very prominent keel round 
the upper part. 
Mirra rozorea. Mitr. testd pyramidali, spird acuminatd ; nigri- 
cante-fuscd, liris albidis angustis undique funiculatd ; columelld 
biplicatd, plicis subindistinctis ; aperturd parva. 
Conch. Icon., Mitra, pl. 37. f.306. 
Hab. ? 
An interesting dark pyramidal shell, encircled throughout with 
white cord-like ridges. 
Mirra ravivus. Mitr. testd gracili-fusiformi, spird acuminatd, basi 
contractd, subelongatd ; anfractibus longitudinaliter concentricé 
plicato-costatis, interstitiis cancellatis ; pallideé carned, anfractu ul- 
timo fascid fuscescente basim versus cingulato ; columeild biplicatd. 
Conch. Icon., Mitra, pl. 37. f. 309. 
Hab. Island of Corregidor, Philippines (found among coarse sand 
at the depth of seven fathoms) ; Cuming. 
A light elegant shell, in which the ribs are of a peculiarly concen- 
tric growth. 
Mirra GLanpirorMis. Mitr. testd ovatd, utrinque attenuatd, spire 
suturis profundé impressis ; longitudinaliter costatd, costis levibus, 
interstitiis profunde clathratis ; cinereo-griseo alboque variegatd, 
basi albicante ; columella quadriplicatd. 
Conch. Icon., Mitra, pl. 37. f. 310. 
Hab. ? 
In most examples of this species the white rather predominates. 
Mirra cINERACEA. Mitr. testa pyramidali-ovatd, spird turritd, 
basi subrecurvd ; anfractibus superné angulatis, longitudinaliter 
costatis, costis ad angulum subnodosis, interstitiis liris parvis 
transversis cancellatis ; cinereo-grised, fascid albidd subinterruptd 
cingulatd, basi albidd ; columella quadriplicatd, aperturd parvd. 
Conch. Icon., Mitra, pl. 37. f. 311. 
Hab. Cagayan, province of Misamis, island of Mindanao, Philip- 
pines (found under stones at low water) ; Cuming. 
A sharply turreted shell, in which the prominent parts of the ribs 
are white upon a dark ashy ground. 
Mirra timata. Mitr. testd ovatd, crassiusculd, spird mediocri ; 
levigatd, politd, transversim undique sulcatd, sulcis puncturatis ; 
