PHILINE. 545 



raised and very slightly bent back ; it is not, however, 

 distinctly reflected, nor is there any vestige of an umbilicus. 

 The shell measures a quarter of an inch in length, and 

 rather more than the eighth of an inch in breadth. 



The animal is rather more elongated in shape than its 

 congeners. It is entirely white, usually slightly tinged 

 with yellowish or tawny. The margin of the mantle pos- 

 teriorly is laciniated. The lateral lobes, or foot wings, are 

 large. Loven states that the sides of the tongue are 

 armed, besides the row of large laterals, with a single 

 series, on each side, of minute supplementary denticles. 



This ])retty shell, which is much more common in the 

 south than in the north, has a range in depth of from five 

 to fifty fathoms. It has been taken in Devon, and on the 

 west of Ireland by Mr. Barlee, on the Northumberland 

 coast by Mr. Alder, and at Scarborough by Mr. Bean. 

 Among the Hebrides and Zetlands it is not uncommon 

 (M'Andrew and E. F.). Mr. W. Thompson records it 

 from localities on both sides of Ireland. 



It ranges throughout the boreal seas. 



P. CATENA, Montagu. 

 Minute, subovate ; sculpture consisting of spiral series of rings. 



Plate CXIV. E. fig. G, 7, and (Animal) Plate U. U. fig. G. 



Bulla catena, Mont. Test. Brit. p. 215, pi. 7, f. 7. — Maton and Rack. Trans. 

 Linn. Soc. vol. viii. p. 122. — Turt. Conch. Diction, p. 24. — 

 Johnston, Berwick. Club, vol. ii. p. 31. — Dillw. Recent 

 Shells, vol. i. p. 478. — Wood, Index Testaceolog. pi. 18, f. 15. 

 — Gratel. Sur les Bull, (and Bui. Lin. Bordeaux), p. 23. 

 „ punctata, Fleming, Brit. Animals, p. 294. 

 BullcBa catena, Clark, Zool. Journ. vol. iii. p. 337. — Macgilliv. Moll. Aberd. 

 p. 187.— Brown, Illust. Conch. G. B. p. 57, pi. 19, f. 3.3, 34. 

 „ angiistata (Bivon), Philippi, Moll. Sicil. vol. i. p. 121, pi. 7, f. 17. 

 „ catenata, Brit. Marine Conch, p. 138 (not figure). 



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