Mr. J.G. Jeffreys on British Odostomiz. 109 
O. conoidea var. a. Arran Island, co. Galway; Guernsey ; 
Mr. Barlee. 
O. diaphana. Lerwick, Mr. Barlee. 
O. decorata (un. s.). 
Testa ovato-oblonga, diaphana, nitida, alba, per dimidium in- 
feriorem anfractis cujusque striis impressis undulatis circa 15 
sculpta ; anfractus 5, convexi, ultimo plusquam @ test zquante ; 
apex obtusus; sutura subobliqua, profunde incisa; apertura 
ovata, subtus rotundata, superne ad mediam anfractis ultimi 
inflexa ; peristoma OE os umbilicum includens ; plica in- 
conspicua. Long. }5, lat. 4; une. 
Burrow Island, Mr. Bean and Mr. Barlee. 
In my former paper I had confounded this species with O. ob- 
liqua, but am now satisfied of its distinctness, by reason of the 
spire being less oblique, the whorls more convex, the regular and 
close strize on the lower half of each whorl, the absence of a fold 
on the pillar, and especially of the well-defined umbilicus. IT re- 
ceived the species some years ago from Mr. Bean under the MS. 
name of decorata; and as this name has been used by British 
conchologists, it may be inexpedient to change it for perhaps a 
more appropriate appellation. It differs from O. diaphana in its 
less cylindrical form and the greater convexity of its whorls, be- 
sides possessing spiral strize and an umbilicus, which are wanting 
in the other species. 
O. obliqua. Lerwick, Mr. Barlee. 
O. insculpta. Dunvegan, Skye ; Oban ; Burrow Island; Mr. 
Barlee. 
O. truncatula (n. s.). 
Testa oblongo-cylindrica, tenuis, nitida, alba, striis subtilibus 
spiraliter corrugata preesertim in anfractibus apicalibus, longitu- 
dinaliter ad suturam striis undulatis sculpta; anfractus 6, con- 
vexiusculi, turriculati, sensim increscentes, primo velut exciso ; 
sutura obliqua, profunda; apertura ovalis, superne in angulum 
contracta, subtus effusa; peristoma fere continuum, postice re- 
Aap — nullus ; denticulus conspicuus, pliczeformis. 
Long. 2, lt. zp une. 
Plymouth, very rare; Mr. Barlee. I have only seen one adult 
specimen. This species has somewhat the form of “ Turbo sub- 
truncatus,’ Mont., which is the young of Truncatella Montagut ; 
and the specimens recorded by Montagu as having been found 
“in sand from Salecomb” may possibly be referable to it. It is 
however a true Odostomia, and differs in form and markings from 
any of its congeners. The animal appears to have a yellowish 
colour. 
O. dolioliformis. Burrow Island; west coast of Scotland ; 
Mr. Barlee. 
