from the Tertiary Beds near Melbourne. 377 
distinct than‘those of the posterior portion ; and, finally, in very 
large old specimens, the spiral strize on the space above the tu- 
bercles are reduced to a few near the suture. Outer lip in 
adults greatly dilated into an oblong wing, with a broadly 
rounded auriculate posterior margin rising up for attachment 
nearly to the suture of the penultimate whorl; outer margin 
nearly straight, thin, and slightly inflected, ending at the nar- 
rowed end with three large, equal, very prominent, compressed, 
widely separated, oblique plaits, besides which, in some examples, 
are one or two closer and smaller ones (usually absent); aperture 
moderately large, oblong. 
Length of small perfect specimen 6 inches, proportionate 
length of body-whorl =72;, of penultimate whorl +43, ante- 
penultimate whorl +2,, preceding whorl ;4,; length of pullus 
;3,, diameter of pullus ;4°,; diameter of succeeding whorl at 
suture =; length of wing ;°°,; greatest width of body-whorl 
and wing ;%3;, of penultimate whorl ;32,; ordinary length of 
pullus 6 lines, diameter 7 lines. 
So disproportionately large and smooth does the pullus or 
young nucleus on the top of the spire appear, that it looks like 
a comparatively large Natica or Helix artificially stuck on the 
comparatively slender, regularly nodulated, and striated spire, 
its disproportion far exceeding the greatest living instance of 
such an incongruity, the recent Voluta mamilla. The first very 
large specimen seen was presented by Mr. Hannaford, of 
Warnambool, an enthusiastic naturalist, after whom I have great 
pleasure in naming the species. This specimen, having the 
apex absent and the outer lip and the anterior end of the colu- 
mella broken off, as well as possessing two unusual small plaits 
behind the others, looked so much more like a Fasciolaria than 
a Voluta, that in my manuscript I used the former generic name, 
until I saw other specimens showing the true characters of the 
notched anterior end, mammillary spire, &c. 
There is no known recent or fossil species at all approaching 
it in general characters. 
Rare in Tertiary clays of Muddy Creek, near junction of 
Grange Burn, five miles from Hamilton. 
One very imperfect specimen, presented by Mr. Hannaford, 
from the clays of Port Fairy, Warnambool, where it occurs with 
several other species of the Mount Eliza beds. Rather rare in 
the clays near the foot of Mount Eliza, in Hobson’s Bay, whence 
the perfect specimen was obtained, as well as a few fragments of 
the spire with the large nucleus attached. are in clays of the 
Orphan Asylum Reserve, Fyan’s Ford, Ad. 28; rare in clays 
near Mount Martha. 
Ann. & Mag. N. Hist. Ser. 3. Vol. xviii. 26 
