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transversim punctato-striata; anfractibus supremis transver- 
sim sulcatis, ultimo basi attenuato, postice valde transversim 
sulcato; apertura angusta; columella triplicata, plica me- 
diana bipartita ; labro intus quadrituberculato. 
Hab. Philippines. Mus. Cuming. 
In this species there is no umbilicus, and the last whorl is pointed 
and subacute anteriorly ; the whorls of the spire are sulcate, and the 
outer lip is furnished internally with four tubercles. 
5. PLecoTreMA LirATA, H.& A. Adams. PP. testa wmbilicata, 
ovato-conica, fusca, pallide fulvo-cincta ; spira acuta, anfracti- 
bus planis, transversim liratis, liris confertis ; apertura parva, 
angusta ; labio subcalloso; columella triplicata, plica postica 
obsoleta, tuberculiformi; labro extus incrassato, intus biden- 
tato ; umbilico intus costa elevata, spirali munito. 
Hab. Moreton Bay. Mus. Cuming. 
In this species the outer lip is thickened, and there is a spiral callus 
in the rather wide umbilicus. 
6. PLecorrema cuausa, H. & A. Adams. P. festa rimata, 
ovato-conoidea; spira acuta; rufo-fusca, aut pallide fulva, 
transversim lirata, liris confertis, elevatis ; apertura angusta, 
ringente; labio calloso, triplicato, plica mediana bipartita, an- 
tica pervalida; labro extus incrassato, margine inflexo, intus 
valde bidentato. 
Hab. Sandwich Islands. Mus. Cuming. 
The aperture in this species is very narrow and ringent, the outer 
lip is thickened externally, with the margin somewhat reflexed, and 
the umbilicus is reduced to a narrow fissure. 
7. PuecoTtReMA pecussaTA, H. & A. Adams. PP. testa ovato- 
conica, umbilicata ; spira conica, apice acuto; brunnea, longi- 
tudinaliter striata, transversim sulcata, liris intermediis sub- 
granulosis ; apertura oblonga, angusta, antice quadrata, quasi 
truncata ; columella triplicata, plica postica tuberculiform, 
mediana bipartita ; labro acuto, extus pallide fusco, intus albo 
marginato, bituberculato ; regione umbilicali carina spirali cir- 
cumceincta. 
Hab. Philippines. Mus. Cuming. 
The base of the last whorl, owing to the large size of the umbili- 
cus, appears as if truncated. 
8. PLecorrReMA puNCTATO-sTRIATA, H. & A. Adams. P. festa 
ovata, solida, vix rimata; spira elata, conica; ferruginea, 
transversim punctato-striata; apertura oblonga, angusta; colu- 
mella triplicata, plica postica tuberculiformi, mediana bipar- 
tita; labro acuto, intus albo-marginato, tridentato. 
Hab. Borneo (Lieut. Taylor). Mus. Cuming. 
The transverse striee in this species are conspicuously punctate, 
and there are three tubercles in the interior of the outer lip; the 
spire is acute, and the last whorl rather produced, with only an um- 
bilical fissure. 
