162 JOURNAL OF CONCHOLOGY. 
THE MARINE MOLLUSCA OF TEIGNMOUTH BAY. 
ADDITIONS. 
By L. Sr. GEORGE BYNE, B.Se: 
(Read before the Conchological Society, July 3rd, 1895.) 
In the ‘Journal of Conchology,’ vol. 6, p. 175, appeared ‘A Con- 
tribution towards a List of the Marine Mollusca of Teignmouth 
Bay.’ Since then several additional species have been found. 
Dr. G. W. Chaster, of Southport, paid this place a visit of 
about ten days’ duration in September, 1894, and many of the 
additions recorded here are the result of his labours. A 
dredging expedition yielded many good species, the most 
important being Cerzthiops’s Barleet, live Odostomia acuta, 
O. fenestrata, O. interstincta, O. pusilla, Rissoa proxima, R. 
vitrea, both alive and dead, dead specimens being abundant ; 
Chiton cancellatus, Pleurotoma nebula, P. brachystoma, and P. 
attenuata alive. ‘Vhe taking of so many species of P/ewrotoma 
in a living state was particularly pleasant. 
The method employed in working the material brought up 
in the dredge may prove both interesting and useful. The 
depth of nine to twelve fathoms is maintained almost uniformly 
throughout the bay. The bottom is almost entirely composed 
of fine muddy silt, greasy to the touch, and thickly interspersed 
with Zurritella communis, which is sometimes taken alive, but 
mostly in a dead condition, P#iline aperta, starfish, and 
Alcyonaria. It was found best, after dismissing other plans, to 
work up a large amount of the mud with sea-water in a bucket, 
stirring the whole thoroughly. The water holding the mud in 
suspension after the shells and larger particles had had time to 
subside, was poured off. The mass remaining at the bottom of 
the bucket was then put through sieves, the finest being of 
miller’s bolting cloth. By this means large quantities of mud 
can be worked without loss even of the minutest species. 
J.C., viil., Jan., 1896. 
