28 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 
teeth, though quite unmistakably present, were plainly seen to be 
ereatly degenerate, and are probably quite functionless. They were 
of extreme. tenuity compared with the very massive rhachidian tooth, 
and their contours were ragged.!. Under the action of, even cold, 
caustic potash they were so very speedily disintegrated, that I had 
no time to make a drawing of them before they were entirely 
destroyed. 
VoturititHeEs aBysstcota, Ad. & Rve. 
I have examined the dissected specimen described by Martin F. 
Woodward, and may add the following to his account (138) of this form. 
External characters of Aninal.—The tentacles and eye-stalks are 
quite rounded, and thus unlike those of any other Volute hitherto 
recorded. The foot is scarcely at all auriculated; its front margin 
is duplicated. I could find no trace of any pedal pore; and I am 
confident, so beautifully are the specimens preserved, that I should 
have been able to detect an opening had one been present. The 
siphon, which is quite devoid of tentacular appendages, is surrounded 
by a collar-lke prolongation of the mantle. 
CymMBIoLa ANCILLA, Sol. 
The following few notes, based upon the material described by 
Martin F. Woodward, may be added to his description (13). 
External characters of Animal.—The front edge of the foot is 
duplicated. The appendages to the siphon are of very nearly equal 
length, and are quite insignificant by comparison with the siphon 
itself. 
Leiblein’s Gland.—This is much convoluted, and the convolutions 
are bound up together in very tough connective tissue. ‘The duct 
terminates in a muscular sac of not much larger calibre than the duct. 
Salivary Glands.—Vhe tubular glands each terminate in a distinct 
pyriform enlargement. 
Radula.—Mr. Martin F. Woodward did not consider it necessary to 
figure the radula, since it is of the same type as that of the majority 
of the Volutes whose dentition has been examined. In my opinion, 
however, it is desirable that, wherever possible, the detailed charac- 
ters of this organ should be placed upon record, since these details 
will probably assume an increased importance in the future. I have 
therefore made a camera-lucida drawing (Fig. 9) from Woodward's 
preparation. It should be noted that the central cusp bears no dorsal 
groove, but is quite solid and rounded. ‘The radula, as mounted, 
contains 48 tecth, and it appears to be complete. 
VESPERTILIO VESPERTILIO, Linn. 
Radula.—For comparison with the radula of Amoria Turneri, I have 
thought it advisable to figure a portion of the original preparation 
described by Dr. Gray (7) as that of V. vespertiho (Fig. 10). The 
1 Jt is noteworthy that degenerate lateral teeth have been recorded by Schacko (10) 
as existing in Pop licisimoonciniites ved 
Dern Vv atitev Lind CA moanrtong 
