514. MR. W. HARPER PEASE ON NEW MARINE SHELLS [June 27, 
TorRINIA CONICA. 
T. . conica, elevata, ad peripheriam obtuso-angulata, concen- 
trice sulcata et creberrime striata ; sulcis tribus, punctulatis, 
longitudinaliter vix oblique insculpta ; umbilico angusto ; aper- 
tura subcirculari ; albida, irregulariter pallide purpureo vel 
cinereo strigata et maculata. 
Alt. 10, diam. 10 mill. 
TuRRICULA PUTILLUS. 
T. ¢. abbreviato-fusiformi, subventricosa, sulcis angustis decus- 
sata, sulcis longitudinalibus tenuiter striatis ; spira breviuscula, 
acuta, suturis valde impressis ; apertura intus valde lirata, 
labro denticulato ; columella quadriplicata; nigra, spira et 
anfractu ultimo superne albo maculatis, interdum fascia inter- 
rupta alba cingulatis, sulcis transversis rufo-fuscis. 
Long. 10, diam. 5 mill. 
The shell has some of the characters of Mitra alveolus, Rve. 
Genus MirrorpEa, Pease. 
Testa mitriformis ; columella multiplicata ; antice valde truncata. 
MITROIDEA MULTIPLICATA. 
M. ¢. oblonga, subfusiformi, solida, transversim tenuiter striata ; 
spira brevi, acute acuminata ; basi truncata; columella pro- 
ducta, recurvata, subcontorta ; labro simplici, intus levi, extus 
incrassato, subvaricoso ; apertura angusta, longissima, duobus 
trientibus longitudinis teste adequante, antice vix dilatata ; 
columella decemplicata, plicis confertis, regularibus, vix obli- 
quis ; albida, epidermide tenui straminea induta, lineis casta- 
neis distantibus cingulata. 
Long. 25, diam. 9 mill. 
This very remarkable little shell differs from all other known Mi- 
trids (1) in having ten plaits crowded on the anterior half of the 
pillar-lip, and (2) in having the base truncate, in a manner some- 
what approaching Terebellum, beyond which the projecting columella 
is somewhat recurved. 
MIrrRA NIGRICANS. 
M. ¢. fusiformi, elongata, levigata, transversim tenuiter striata, 
striis subdistantibus punctatis ; epidermide tenut induta ; spira 
gracili, elongata, acuta ; labro simplici ; columella quadripli- 
cata; nigrescente, fascia angusta castanea cincta; apertura 
plumbea. 
Long. 20, diam. 7 mill. 
NERITINA RUBIDA. 
N. t. oblongo-ovata, tenui, striis incrementi rugulosa; spira 
parva; area columellari levi, cinerea ; fuscescenti-rubida. 
Long. 5, diam. 3 mill. 
