BYNE: MARINE MOLLUSCA OF TEIGNMOUTH BAY. 163 
A word as to the Zurritelle. They are usually fine shells, 
weathered on the surface even when alive, but in one part of 
the bay, off Labrador Tea Gardens, a much more highly coloured 
and fresher looking form was brought up. This latter is the 
young of the first year’s growth, the shell being completed in 
another year by the addition of two more whorls. It will be 
noticed that all mature examples are more or less scalariform, 
and that the fresh appearance of these whorls contrasts strongly 
with that of the rest of the shell. 
The late Mr. Clark, who worked Exmouth so thoroughly 
many years ago, enumerates in his valuable treatise several 
species such as Aclis Gulsone, Lepton Clarkia, Philine pruinosa, 
Odostomia obliqua, Galeomma Turtoni, etc., which I have been 
unsuccessful in rediscovering. This may perhaps be accounted 
for by the fact that I have never dredged on the hard ground 
which stretches past Dawlish to Exmouth. All my excursions 
have been carried out off Labrador Gardens and Watcombe, 
upon a muddy bottom. 
I desire to offer my best thanks to Dr. G. W. Chaster for 
much of the information given in these pages, and especially 
that concerning Cerithiopsis Barleei. 
Nucula nitida var. radiata Marsh. A few living examples 
from the dredged material. 
Montacuta bidentata Mont. Living examples and valves 
dredged. 
M. ferruginosa Mont. Valves dredged. 
Kellia suborbicularis var. lactea Brod. Several from 
amongst type specimens from Pholas burrowings, Exmouth. 
Cardium norvegicum var. gibba Jeff. Fine specimens. 
Oyster dredged with the type. 
Cyprina islandica var. crassa Jeff. Oyster dredged with 
type. : 
Venus gallina var. laminosa Mont.—Two specimens. 
Valves are very plentiful in the mud brought up by the 
dredge. , 
