PUILINE. 541 



whole to be more common in the south than in the nortli. 

 It inhabits muddy ground at various depths, between low 

 water-mark and thirty fathoms. We once saw vast num- 

 bers of them come in alive with the waves, on the shores 

 of Portobello sands, near Edinburgh (E. F.). 



Bullfea aperta is said to have a very wide range, and is 

 recorded even from the southern hemisphere. It is possible, 

 however, that more exotic species than one have been con- 

 founded under the name. 



P. QUADRATA, Scarlcs Wood. 



Spirally striated, with alternately larger and smaller series of 

 confluent impressed dots. 



Plate CXIV. E. fig. 2, 3. 



Bullcea quadnila, S. Wood, Mag. Nat. Hist, new ser. vol. iii., 1839, p. 40" 1, 

 pi. 7, f. 1 ; Crag Moll. p. 179, pi. 21, f. 9, fossil.— Alder, 

 Cat. Moll. Northumb. and Durh. p. 26. 



Bulla „ S. Wood, Ann. and Mag. Nat. Hist. 1842, p. 4G0, fossil. 



Philinc sculidum, Loven, Index Moll. Scand. p. 9, probably. 



We have seen but few examples of this extremely rare 

 shell, none of which were precisely similar in shape and 

 sculpture to each other. It is a larger species than our 

 other sculptured Fhilines, and is not quite so fragile. The 

 shape, which is rounded oboval, and occasionally oblique, 

 is sometimes a little squared ; it is subtruncated above (at 

 times obliquely, at times even incurvately so), and sub- 

 angulately rounded at the lower extremity ; the side 

 opposite to the lip is always much bowed. It is less de- 

 |)ressed than many of its congeners, being somewhat 

 swollen dorsally, yet chiefly so anteriorly, as a profound 

 retusion is visible near the upper extremity of the body ; 

 the crown is a little indented, but does not exhibit any 



