508 Mr. Jurrreys’s Supplement to the “Synopsis of 
. many parts of Switzerland and on the French side of the Jura ; 
but has not I believe been found in more southern districts. 
H. cingenda, p. 333. 
Whitsand Bay, Cornwall. * Balbriggan Strand": . App. to 
Welsh § Whitelaw's Hist. of Dublin. 
H. virgata, p. 334. 
The variety « is very plentiful on Braunton Burrows, North 
Devon; and Mr. Alder has sent me a charming thin milk-white 
variety with a band of the same colour. 
The H. neglecta of Draparnaud may, I think, be referred to 
another variety. 
Pfeiffer’s var. « and both his figures for this species (variabilis, 
P.) belong to the H. cingenda. 
H. caperata, p. 335. 
H. Thymorum. Pfeiffer, i. 37. T Taf. ii. fig. 21, 22. 
Var. a. candida, zonà submarginali fusca, duabusque ap- 
proximatis inferioribus. 
H. candidula. Fér.? 
Of this very beautiful variety I found a few specimens on the 
downs which overhang Whitsand Bay near Plymouth. Pfeiffer 
at first called it a variety of his H. Thymorum; but he seems 
afterwards to have considered it as a distinct species in the Sy- 
stematic Table at the end of his work. The point of difference 
between it and the caperata seems to be the same as that which 
is made to distinguish the Pecten opercularis and lineatus of 
British conchologists. 
H. pallida, p. 335. 
Common in many parts of Surry and Kent. Neighbourhood 
of Dublin: App. to Welsh § Whitelaw’s Hist. of Dublin. 
Young shells are hispid, a character common to this and 
many of its continental congeners. 
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