from the Tertiary Beds near Melbourne. 377 



distinct than 'those of the posterior portion ; and, finally, in very- 

 large old specimens, the spiral strise 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 })enultimate 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 -riis} of penultimate whorl -rio, ante- 

 penultimate whorl T-§^-g-, preceding whorl — J-q-; length of pullus 

 -Y%-of diameter of pullus -nro j diameter of succeeding whorl at 

 suture -To-o j length of wing yt/Vj gi'eatest width of body-whorl 

 and wing -y^^o, of penultimate whorl -^-^ ; 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 Valuta 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 ofi^, as well as possessing two unusual small plaits 

 behind the others, looked so much more like a Fasciolaria than 

 a Valuta, 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 JMount 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. Rare 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 



