IN THE PRESS. 
SHCON Drie nw 
THE COLLECTOR'S MANUAL 
British Land and Freshwater Shells, 
BY LIONEL E. ADAMS, B.A., 
HON. TREASURER CONCHOLOGICAEL SOCIETY. 
Lilustrated by Collotype & Engraved Figures of the species from Original Drawings, 
By A. SICH, G. W. ADAMS, and the AUTHOR, 
And containing a full enumeration and description of all the recognized varieties, 
with diagnostic tables of the more difficult genera, framed for the purpose of facili- 
tating the easy identification of the more critical species. 
A full and detailed Census of the known Distribution of every Species, 
including the results of the latest researches, will be added. 
PRICK S/= PLAIN, AND LO/G COLOURED. 
Orders may be sent to TAYLOR BROTHERS, Sovereign Street, Leeds; 
or to the AUTHOR, 77, St. Giles’ Street, Northampton. 
ENQUIRIES. 
Will ‘‘ H. R. M.,” or some other learned brother, kindly give me the deriva- 
tion of dzeca and Canzgonensis >—L. E. A. 
ANSWERS. 
In answer to Mr. Layard’s query, I give my experience. In pure peat water 
few pond weeds flourish and fewer snails. Where other soil is mixed with the peat 
(e.g., the ‘* Curragh,” Isle of Man) shells are found, though usually small. Irish 
peat drains contain no snails (so far as my experience goes). I should not think 
an importation would be a success, but much would depend on whether weeds 
will live in Mr. Layard’s water.—LioNeEL E. ADAMS. 
In reply to Mr. Layard’s query in the January number of the Journal, I should 
say, judging from my own observations only, that bog and peat water, although most 
decidedly detrimental to the existence of many molluscan species, is on the other hand 
beneticial to some few, notably Lzmnca peregra. Up here, in the Lake District of 
England, the greater portion of the soil is of a peaty nature, and the ditches and tarns 
heavily charged with decaying vegetable matter, yet in all of them, 2 fo @ certain 
altitude, Limnea peregrais abundant. A lurking idea of my own is that the altitude 
of a body of water, and thé consequent lowering of temperature, has more to do 
with the absence of mollusca in the peaty regions of our country than its boggy nature 
and this seems proved by the fact that in no instance have I found any aquatic 
shell-bearing mollusca above an altitude of 1,500 feet. This is a subject worthy 
of being worked up, and I should certainly like to hear the views of other, and 
better informed, conchologists on the matter. Last Spring I paid a visit to the 
Outer Hebrides for the purpose of collecting sea birds’ eggs, and so paid little atten- 
tion to the mollusca; but I dd find time for a small hunt, ard found Linea 
peresra, Linnaa truncatula, ae fluviatilts, and Physa fontinalis quite com- 
mon in the ditches and lochs about Lochboisdale, C ‘astlebay, and on the Island of 
Barra. At the latter place, too, dead shells of Helix acuta and H. rwufescens were 
plentiful ; we found no living specimens. Finally, I have no doubt that Lemzca 
peregra introduced into Mr. Layard’s tarn will do well and increase in numbers, 
always providing the altitude is not too great—-say not exceeding 1,000 feet above 
sea level.—W. J. FARRER. 
OsPHRADIUM, Greek oodpdd.ov, from dodpaivoyat, ‘to smell,’ the 
name applied by Lankester (Encycl. Brit., ed. 9, Mollusca, p. 636) to 
Spengel’s olfactory organ, a small papilla in the neighbourhood of the 
eill, which tests the water passing over it for respiratory purposes. 
RHINOPHORE, Greek jis, pivos, ‘nose,’ and bepe ‘to bear,’ the name 
given to an olfactory tentacle. —P.K.F. 
