103 
Hab. Bolino, provinciam Zambales, ins. Luzon. 
Resembling P. vitrea, but the margin not flattened, and the notch 
so deep that it is seen at the back of the shell. Found on leaves 
of bushes and trunks of trees in the island of Luzon. 
Purina rxicua, Sow. jun., Thes. Conch. f. 17. Testa parva, 
translucida, alba, cylindrica ; anfractu penultimo inflato ; mar- 
gine aperture paululim incrassato, incisurd diviso. 
Long. ‘26; lat. 16 poll. 
Hab. St. Nicholas, ins. Zebu, Philippinarum. 
This small, transparent white species has the margin very little 
thickened, and the notch deep. Found on small plants. 
* ** Spira recta, apertura bicanaliculata. 
Purina HumiLis, Jaquenot, Sow. jun., Thes. Conch. part 1. f. 2. 
Testa ovalis, solida, pallide lutea, anfractibus subrotundatis, ulti- 
mo prope aperturam paululim complanato ; aperturd rotundatd, 
margine crasso, expanso, reflexo; labio interno crasso, postice pli- 
cato; columella crassd, latd, tortuosd, reflexd ; incisurd ad dorsum 
lata. 
Long. ‘60; lat. °40 poll. 
Hab. ? Mus. Cuming. 
This being a dead shell has lost the brilliancy of the enamel. The 
teeth or folds at the posterior part of the inner and outer lips form 
a very distinct canal. The columella is tortuous and turned back- 
wards, and the notch is seen at the back like the canal of a Buc- 
cinum. 
Purina Keravprentt, Vignard, Sow. jun.,’Uhes. Conch. part 1. i ee 
Testa parva, cylindrica, griseo-rufescens ; spird obtusd rectd ; 
aperturd parvd, margine incisurd diviso ; labio externo leviter 
incrassato, postice subplicato ; labio interno plicato. 
Long. *30 ; lat. °15 poll. 
Hab. Manilla and Singapore ? Mus. Stainforth, Sowerby. 
A pupiform species with a posterior canal. 
Purina BICANALICULATA, Sow. jun., Thes. Conch. part 1. fig. 1. 
Testa parva, ovalis, alba, translucida ; anfractibus ventricosis ; 
apertura magnd, margine subexpanso, subincrassato, ad basin 
columelle inciso ; labio interno postice plicato. 
Long. *26; lat. -16 poll. 
Hab. St. Nicholas, ins. Zebu, Philippinarum. 
This species differs from P. Keraudrenii in shape, being more ven- 
tricose, having a tapering spire, and a very strong fold on the inner 
lip. Found on small plants in the island of Zebu. 
The following paper, entitled ‘‘Descriptions of four species of 
the genus Chiton, brought by H. Cuming, Esq. from the Philippine 
Islands,” also by Mr. G. B. Sowerby, jun., was then read :— 
Cuiton putcuerrimus. Ch. Testd ovali, angulatd, ad dorsum ele- 
vatd, pallide subviridi, fasciis binis rubris distantibus dorsalibus, 
