﻿BIVALVIA. 



109 



Some hinges and other fragments of a species of Lima 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, Lamarck. Supplement Tab. X, fig. 1 a, b. 



Ostkea lima, Linn. Syst. Nat., edit. 12, p. 1147 (pars). 



_ _ Poll. Test. Utrius. 9, Sec, pi. xxviii, figs. 22—24. 

 Lima squamosa, Lam. Hist, des An. sans Vert., t. vi, p. 15G. 



— — G. Soioerby. Genera Lima, fig. 2 ; Ency. Method., pi. 29G, fig. 4. 



— — A.Bell. Ann. and Mag. Nat. Hist, 18/1. 



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. ii, 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 L. plicatula, and this (of which I have some other 

 examples) may possibly be the young of squamosa. My little specimens, however, 

 appear to differ from squamosa in being much less elongated and more ornamented 

 between the rays, so that if they be young of squamosa 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 PHALiENoiDEs, S. Wood. Crag Moll., vol. ii, p. 51 ; as A. Tarentina ? Supple- 

 ment, Tab. VIII, fig. 1 2. 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, A. phalcenacea,. Bast. As, 

 however, my fragments, though apparently belonging to a larger shell than Tarentina, are 

 those of shells possessing scarcely half the thickness or hinge dimensions of phalcenacea, I 

 have thought it best to give the Crag species provisionally the name of phalcenoides. 



