Marine Mollusca from Japan. 499 
tiliter striati, spiraliter valde lirati, liris numerosis, rotundatis ; 
anfractus ultimus latus, obliquus, supra leviter concavus, 
deinde convexe rotundatus, liris circiter 25 inequalibus, rotun- 
datis instructus; apertura patula eximie plicata, luteo tincta ; 
labrum acutum, crenulatum, margine dextro oblique descendens ; 
area columellari albo callosa, nitens, leviter irregulariter rugosa, 
ad marginem tridentata. 
Alt. 15, lat. 18 millim. 
Hab. Loo Choo. 
The shell somewhat resembles a small form of N. undata, 
Linn., the callosity being much less rugose. 
Omphalius comptus, sp. n. 
Testa late conica, subdepressa, profunde umbilicata, nigro-fusca 
rufo tincta, ad peripheriam et infra albo articulata, regione 
umbilicali alba; spira depresse conica, convexa; anfractus 5, 
convexo declives, minutissime suboblique striati, spiraliter den- 
sissime lirati, liris majoribus 5 rugosis; anfractus ultimus ad 
peripheriam angulatus, carinatus, ad basim leviter convexas, 
multiliratus; umbilicus profundus, mediocriter latus, infundi- 
buliformis, intus albus, valde tricostatus; apertura subcircularis, 
intus margaritaceus, labrum crassiusculum, crenulatum. 
Alt. 6, diam. 7 millim. 
Hab. Loo Choo. 
This shell differs considerably from all the known species 
of Omphalius, although it certainly seems to belong to that 
genus. It has some characters in common with Clanculus 
plebejus, Phil.. The specimens vary in the depth of colour, 
and in the number and disposition of the white spots, which in 
the type are confined to the peripherial keel, but all are white 
in and round the umbilicus. The prominent ribs, so con- 
spicuous in the umbilicus of the type specimen, are in some 
absent or covered with a callus. 
Minolia ornata. 
Testa conico-turbinata, late et profunde umbilicata, alba, fusco 
maculata; spira elatiuscula, gradata; anfractus 53, primi 3 
convexi, spiraliter lirati, ceeteri superne angulati, longitudinaliter 
filo-striati, ad angulum carinati, supra angulum complanati, infra 
leviter convexi, maculis inequalibus flammiformibus ornati ; 
anfractus ultimus biangulatus, infra peripheriam maculis regu- 
laribus triangularibus ornatus, ad basim convexus; umbilicus 
subcircularis, eximie plicatus, spiraliter liratus; apertura sub- 
circularis, peristoma simplex. Operculum tenue, corneum. 
Alt. 4, lat. 33 millim. 
Hab. Hirado Higen. 
