PE. 
12. 
13. 
PACE: ANATOMY OF VOLUTA MUSICA, LINN., ETC. 31 
Sowerby, G. B.: Description of a new South African marine 
Gasteropod [with note upon the anatomy by Martin F. Wood- 
ward]: Marine Investigations in S. Africa, Dept. of Agriculture, 
Cape of Good Hope, No. 5 (1898). 
Troschel, F. H.: Das Gebiss der Schnecken, Bd. u (1868), 
Lief. 2. 
Woodward, Martin F.: Note on the Anatomy of Voluta ancilla 
(Sol.), Weptuneopsis Gilchristi, Sby., and Volutilithes abyssicola 
(Ad. & Rve.): Proc. Malac. Soc. London, vol. iv (1900), 
pp. 117-125, pl. x. 
EXPLANATION OF PLATE II. 
. 1. Voluta musica, Linn. Head, ete., as seen from above: the mantle-cavity 
laid open to show the relationships of the organs of the pallial complex. 
2. Voluta musica, Linn. Dissection of the anterior region of the alimentary 
canal from the right side; semi-diagrammatic. 
3. Voluta musiea, Linn. The central nervous system as seen from the 
right side. 
4. Voluta musica, Linn. Portion of radula. 
5. Neptuneopsis Gilchristi, Sby. View of the head from above ; the positions 
of the rhynchostome and of the line of attachment to the neck are 
indicated by dotted lines. 
6. Neptuneopsis Gilchristi, Sby. Diagram of the introvert and its muscu- 
lature. 
7. Neptuneopsis Gilchristi, Sby. Dissection of the anterior region of the 
alimentary canal viewed from above. The introvert and the pharynx are 
laid open, and the nerves and circulatory vessels and the left racemose 
salivary gland are omitted. The retractor muscle of the buccal mass is 
seen lying between the tubular salivary glands. 
8. Neptuneopsis Gilchristi, Sby. Portion of radula showing the vestigial 
lateral teeth. 
9. Cymbiola ancilla, Sol. Portion of radula. 
10. Vespertilio vespertilio, Linn. Portion of radula. 
11. <Amoria Turneri, Gray. Portions of radula. 
b.g. right buccal ganglion. p. penis. 
b.m. buccal mass. p.g. vight pedal ganglion. 
b.w. body-wall. pl.g. right pleural ganglion. 
6.9. \ 0. ae yr. rectum. 
dg. \ right and left cerebral ganglia. rh. rhynchostome. 
et. ctenidium. s.a. \ right and left siphonal 
h.gl. hypobranchial gland. 3.0. } appendages. 
i. introvert. s.c. cartilaginous support of rudi- 
i.s. introvert-sheath. mentary posterior siphon. 
l.gl. Leiblein’s gland. s.gl. racemose ‘ salivary glands.’ 
mn. central nervous system. sb.g. sub-intestinal ganglion. 
@. cesophagus. sp.g. supra-intestinal ganglion. 
os. osphradium. t.gl. tubular ‘salivary glands.’ 
