140 Mr. A. Adams on some Molluscous Animals 
tenuato, acutiusculo, ad dextram leviter verso; apertura subro- 
tundato-ovata, intus albida nitente. 
Long. 6, lat. 4, alt. 23 mill. 
Habitat in regione Matelle Ceylanica. 
Two specimens were procured by Mr. F. Layard from the 
Lagalle division of the Matelle district. This is the first species 
of the genus which has been found in Ceylon. It is related to 
the European A. fluviatilis, but may at once be distinguished . 
by the elevated radiate ribs which occur at short intervals and, 
equally with the depressed spaces, are marked longitudinally 
with the minute ribs at their sides. 
M. Bourguignat represents Ancylus Baconit as occurring in 
Bengal. A. Verruca, Bens. (Annals for January 1855), taken 
by me at Bhimtal, and by Dr. Bacon and myself in Rohilkhund, 
and which was found by Mr. Theobald in Orissa, is the sole 
Indian species decidedly known. I strongly suspect that M. 
Bourguignat’s species is that which was taken by Dr. J. F. Bacon 
at Henley Park, six miles from the Darling Range, in West 
Australia. 
Cheltenham, Dec. 26, 1863. 
Erratum.—In ‘Ann. & Mag. Nat. Hist.’ for December 1863, p. 427, 
line 11 from top, for ‘‘ parietal” read “ columellar.” 
XVIII.—WNotes on some Molluscous Animals from the Seas of 
China and Japan. By Artuur Apams, F.L.S. &e. 
“Ture is in shell-fish something more to consider than their 
shells,” observes wise old Adanson ; and indeed we are all aware 
that a knowledge of its testaceous envelope is not always suffi- 
cient to determine the natural position or affinities of a mollusk. 
I lately placed my genus Scaliola with the “ Wentletraps,” and 
associated my Diala with Planaxis; Fenella also fared no 
better, and was regarded by me as a Pyramidellid. On becoming 
acquainted, however, with the animals of those genera, I have 
been enabled, by means of the ‘ Annals,’ to refer them to their 
natural families ; and as any account of these molluscous crea- 
tures, written down from careful observation on the spot, must 
be of interest, I have thrown together some of my notes for in- 
sertion in your Journal. ‘The photographic art may some day 
be applied to portray the forms of the Mollusca: in the mean- 
time, accurate drawings should not be despised; and I trust at 
some future period to be able to reproduce a few of mine of the 
mollusks of Japan. 
Photinula quesita, A. Ad. 
P, testa orbiculato-conica, imperforata, spira elatiuscula, regione 
