BIVALVIA. 109 
Some hinges and other fragments of a species of Zima have occurred in the Middle 
Glacial sands. ‘The coarseness of the striation on-one of the fragments suggests their 
belonging to this species. 
Lima squamosa, Zamarck. Supplement Tab. X, fig. 1 a, 6. 
OsTrEA LIMA, Linn. Syst. Nat., edit. 12, p. 1147 (pars). 
— — Poli. Test. Utrius. 9, Sec., pl. xxvii, figs. 22—24. 
Liwa sauamosa, Lam. Hist. des An. sans Vert., t. vi, p. 156. 
— — G. Sowerby. Genera Lima, fig. 2; Ency. Method., pl. 296, fig. 4. 
— — A. Bell. Ann. and Mag. Nat. Hist., 1871. 
Locality. Cor. Crag, near Orford. 
The two specimens figured were obtained from a dealer in Orford, one of which has 
been kindly lent to me for figuring by Dr. Reed, of York, and the other by Mr. Cavell, of 
Saxmundham. ‘These differ slightly from the recent species in having only eighteen to 
twenty rays, but in other respects there is sufficient resemblance to justify their reference 
to it. | 
In ‘Crag Moll.,’ vol. u, p. 46, Tab. VII, fig. 4, and in the ‘Ann. and Mag. Nat. 
Hist.’ for 1839, p. 335, a small shell from the Cor. Crag of Sutton was figured and 
described by me under the name Z. plicatula, and this (of which I have some other 
examples) may possibly be the young of sguamosa. My little specimens, however, 
appear to differ from sqwamosa in being much less elongated and more ornamented 
between the rays, so that if they be young of sgwamosa the shell must alter materially in 
its growth. All these specimens are very rare, and until some of intermediate growth can 
be obtained the union of the two names under one cannot be adopted. 
AvicuLA PHALZNOIDES, S. Wood. Crag Moll., vol. ii, p. 51; as 4. Zurentina? Supple- 
ment, ‘lab. VIII, fig. 12. Addendum Plate, fig. 23. 
Locality. Coralline Crag, Gedgrave. . 
In the ‘Crag Mollusca’ I introduced the name of <Avicula Tarentina, from some 
fragments which I have had figured as above. A comparison of these with the recent 
Tarentina shows the Crag shell to have been possessed of a much thicker and broader and 
more solid hinge, resembling that of the Bordeaux fossil, 4. phalenacea, Bast. As, 
however, my fragments, though apparently belonging to a larger shell than Zarentina, are 
those of shells possessing scarcely half the thickness or hinge dimensions of phalenacea, I 
have thought it best to give the Crag species provisionally the name of phalenoides. 
