86 
anfractum ultimum, costellis arcuatis, nodulosis, permultis or- 
natis, transversim sulcatis ; anfractu ultimo vie angulato; aper- 
tura quadrato-orbiculari, basi sinuata ; labro breviter reflexo 
et arcuato. 
Hab. Cagayan, province of Misamis, Mindanao. Mus. Cuming. 
This species inhabits estuaries near the sea, and is found among 
the roots of the Rhizophora, or mangrove; it is a dull, solid, ashy- 
brown shell, with numerous corrugated ribs. 
23. CerirHipEA (PrrENELLA) Layarpu, A, Adams. C. testa 
turrita, apice acuta, solida, castaneo-fusca, albo-zonata; an- 
fractibus planiusculis, triseriatim granosis, cingula moniliformi 
ad suturas instructis; anfractu ultimo ad peripheriam sub- 
angulato et bicarinato; apertura ovata, antice subcanaliculata ; 
labro tenui, in medio sinuato. 
Hab. Ceylon (£. L. Layard, Esq.). Mus. Cuming. 
This is a very pretty species, somewhat resembling the P. mam- 
millata of Philippi, but the character of the sculpture of the whorls 
is entirely different. 
24, CeriTHIpEA (PrRENELLA) PAUXILLA, A. Adams. C. testa 
parva, turrito-conica, apice acuta, nitida, straminea ; anfrac- 
tibus planiusculis, varice unico ad anfractum ultimum, suturis 
canaliculatis, anfractibus triseriatim granosis ; apertura qua- 
drato-orbiculari, antice sinuata; labro acuto, expanso, margine 
sinuoso. 
Hab. Burias, Philippines. Mus. Cuming. 
This is a small yellowish-brown shining species, with deeply-chan- 
neled sutures, and with the whorls ornamented with three series of 
rather acute tubercles. 
25. Corina pincuis, A. Adams. C. testa fusiformi, in medio 
ventricosa, flavido-fusca, transversim suleata, spira attenuata, 
apice mucronata; anfractibus supremis levibus, mediis serie 
tuberculorum instructis, ultimo levigato, superne nodoso-pli- 
cato; apertura ovali, antice canaliculata, canali brevi; labro 
expanso, margine subreflexo, fusco articulato. ‘ 
Hab. Philippine Islands. Mus. Cuming. 
This is a very singular shell, with a series of large tubercles on the 
middle gibbose whorls, and with the last whorl smooth, and exhibit- 
ing all the characters of the genus Colina. 
26. Coxina costata, A. Adams. C. testa fusiformi, in medio 
gibbosula, flavescente, rufo sparsim maculata, transversim li- 
rata, longitudinaliter costata, costis crassis, equalibus, inter- 
stitiis lineis transversis, elevatis insculptis; anfractu ultimo 
ecostato, cingulis granulosis, transversis ornato, antice angulato, 
basi sulcato ; apertura ovali, antice canaliculata, canalt brevi, 
aperto ; labro expanso, margine incrassato et reflexo. 
Hab. Philippine Islands. Mus. Cuming. 
This species differs from the others of the genus in the longitudi- 
nal ribs of the whorls, and in the elevated granular transverse liree. 
