Mr. A. Adams on new Mollusca from Japan. 297 
conica, basi conyexa, callo crasso obtecta; anfractibus sub lente 
obsolete transversim striatis ; apertura circulari, peritremate con- 
tinuo ; labio incrassato. 
Hab. Gotto Islands ; 71 fathoms. 
Genus Semicassis, Klein. 
Semicassis japonica, Reeve. 
Animal light pmk. Head long, narrow, flattened. Tentacles 
subulate, flattened, broad at the base, pale yellow, with opake- 
white tips and with a dark-brown tapering marginal stripe. 
Eyes very large and black, without pupils, on slight swellings at 
the outer bases of the tentacles. Edge of foot narrowly mar- 
gined with greenish yellow. 
Hab. Gotto Islands; 71 fathoms. 
Genus CyLuEnr, Gray. 
Species incerta. 
Animal semipellucid, white, with an opake-white stripe along 
each side of the upper surface of the foot, and two short di- 
verging stripes of the same colour on the upper part immediately 
behind the operculum. Head broad, triangular, and depressed ; 
tentacles long, filiform, diverging. yes large and black, on 
swellings at the outer bases of the tentacles. Siphon recurved, 
moderate. Foot large, broad, with parallel sides, straight and 
auriculate on each side in front, and truncately rounded behind, 
bearing the operculum obliquely ; the hind margin simple. 
Hab. Satanosaki, south coast of Kiusu; 55 fathoms. 
Genus Crypra, Humphrey. 
Crypta lamellosa, A. Adams. 
C. testa depressa, orbiculari, lamellosa ; apice parvo, spirali, postico, 
submarginali; lamellis dorsalibus concentricis, rugosis, confertim 
imbricatis ; septo interno postico, angustato, curvato; margine 
libero concavo. 
Hab. Gotto Islands; 48 fathoms. 
A small, flat, orbicular, lamellose species, with a narrow con- 
cave septum. 
Genus Turricuta, Klein. 
Turricula (Costellaria) pyramidella, A. Adams. 
T. testa pyramidali-turrita; spira producta, attenuata; anfractibus 
64, planatis, supremis parvis angustatis, longitudinaliter costatis, 
costis rectis distantibus, interstitiis transversim liratis ; apertura 
‘ subtriangulari; labio recto, plicis tribus obliquis spiralibus in- 
