JOURNAL OF CONCHOLOGY. 429 
Exhibits : 
By Mr. Roland Garnett: A beautiful series of Lemmea peregra var. 
oblonga, from Boggart Hole Clough, near Manchester. 
By Mr. R. Standen: Living specimens of Avzon subfuscus, Helix 
nemoralts, H. rotundata, Hyalinia cellaria, Hy. nitidula, Hy. alliaria 
var. wviredula, and Pupa cylindracea vax. curta, collected recently by Prof. 
W. Boyd Dawkins, on the Great Skellig, west coast of Ireland. Also, on 
behalf of the Manchester Museum, a series of the genus Sagda, from Jamaica, 
with specimens sectioned, to show the remarkable lamellar ridge, which runs 
from the mouth to the columella on the second whorl ; some remarkably fine 
examples of Pedum spondylordeum, young and adult, together with a speci- 
men 272 sz¢z ona piece of madrepore from the Red Sea ; and two fine specimens 
of Orbzcula lamellosa, from Peru, illustrating its peculiar habit of collecting 
together in masses, old and young living incompany. He also exhibited the 
marine mollusca from Lifu, treated upon in the paper read. 
By Rev. Canon Norman: Specimens of He/x coronula Lowe, H. 
coronata Desh. recent and fossil, 4. ‘zarella Lowe, and H. Watsonz n.sp., 
in illustration of Mr. J. Yate Johnson’s paper, all from Madeira. 
eS eee 
DESCRIPTION OF HELIX WATSONI, 
A NEW SPECIES OF LAND SHELL, DISCOVERED 
AT MADEIRA, BY SENHOR J. M. MONIZ. 
By JAMES YATE JOHNSON, Corr.M.Z.S. 
(Read before the Conchological Society, June 16th, 1897). 
Helix Watsoni n.sp.—This shell belongs to Lowe’s group 
Coronaria, of which H. tiarella Webb forms the best known 
and most conspicuous member. Its station, like that of ZW. 
grabhami Woll., is between A. tiarella and H. coronula. It 
is nearer to H. grabhami than to either of the others, and as 
Mr. Wollaston gave a full description of that shell, it will be 
sufficient if I point out the chief differences between the two 
shells, with occasional references to other shells of the group. 
ff, Watsont is smaller and darker than HZ. grabhami, with 
a less elevated spire, although this is not depressed, as in Z. 
coronula. ‘The beading on the three lower whorls, which is the 
chief feature of the shells of this group, consists in all of them 
of a regular series of white sub-triangular or trapezoidal saliences 
alternating with depressions, and situate on each whorl imme- 
