GASTEROPODA. 11 
hineis subnodulosis irregularibus, inequalibus (9-10) cingendis ; apertura obliqua, columella 
uno plicato, 
Shell elongated, turreted ; volutions numerous (about twenty), narrow, flattened, but 
slightly contracted towards the base of each volution, and encircled with numerous (nine 
or ten) irregular, unequal, slightly nodulous lines; the aperture is small, subquadrate, and 
oblique, the columellar lip has a single strong plication. 
The volutions are narrow, so that their height is little more than the half of their 
opposite diameters ; the upper border of each is rendered prominent by the slight contrac- 
tion towards the base of each volution; the single strong fold upon the pillar lip, and a 
trace of another mesial fold upon the outer lip, is all that can be ascertained from the 
single specimen at our disposal, which is also the type figured by Professor Phillips. 
Sixteen volutions are preserved, but probably four more would be required to render the 
spire perfect. Nerina fasciata, Voltz, approaches this species nearly, both in the general 
figure and in the ornamentation; judging, however, from specimens obtained in the Coral Rag 
of Yorkshire, the latter has the encircling lines more regularly disposed, and more constantly 
and regularly nodulous ; the spiral angle also appears to be somewhat greater: it is there- 
fore preferable to regard them as distinct species. The length of the imperfect specimen 
above referred to is an inch and a half, to which should be added two lines to perfect the 
spire ; the transverse diameter of the last volution is three lines. 
Geological Position and Locality. The sole example in the Scarborough Museum was 
obtained in the Cornbrash of that locality. 
CERITELLA MINUTISSIMA, Zyc. Tab. XLV, fig. 5. 
Testa minuta, elongata, spira anfractibus (4) elevatis, subplanis ; aperura ovato-elongata ; 
columella contorta. 
Shell minute, elongated ; spire with the volutions elevated, smooth, and flattened ; the 
last volution is large, moderately convex, attenuated towards the base; the aperture is of 
moderate dimensions, ovately elongated ; the columella is contorted at the base, as is usual 
in the genus. 
The length of the aperture slightly exceeds one third that of the entire shell. It is 
allied to some of the varieties of Ceritella parvula (Acteonina), but is more subulate ; it 
also approaches to Zudifer Gerandoseus, Piette, but is less attenuated than the latter 
shell. 
Geological Position and Locality. Obtained, both by Mr. Witchell and myself, in the 
Great Oolite of Minchinhampton. 
