Fusus. 423 



ment of the canal rather suddenly slants with comparative 

 straightness towards the axis. The edge of it is indent- 

 ed by the external cords, is very sinuous in its course, 

 being a little concave near its junction with the body 

 (which latter generally occurs at nearly a right angle), 

 then arching forwards (swelling out more especially below 

 the middle), it again becomes subretuse at the beginning 

 of the beak, and finally convexly and considerably re- 

 ceding. The enamel, though apparently not thickly spread 

 on the pillar, is rather widely diffused upon the body. 

 The columella is narrow, and by no means solid ; the left 

 side of the canal is rather loosely coiled. The horny 

 operculum is not particularly strong, is of a yellowish 

 brown, and is marked with indistinct longitudinal ridges, 

 in addition to the Avrinkles of increase : it is of a some- 

 what elliptic form, that is attenuated at both extremities, 

 but much narrower at the curved and lustrous end than 

 at the other. The adult example delineated in our 

 engravings measured three inches and a half long, and 

 twenty lines across at the broadest diameter. 



This very rare shell was found in fishing-boats on the 

 Northumberland coast by Mr. King. 



F. ANTiQuus, Linnaeus. 



Oval-subfusiform, densely and strongly striated ; nucleus not 

 large ; mouth longer than spire : a prominent siphonal ridge. 



Plate CIV. (fig. 2 a little reduced), 



LiSTKR, Hist. Anim. Angl. pi. 3, f. I ; Hist. Conch, pi. 913, 

 f. 4.— Encycl. Method. Vers, pi, 426, f. 5. 

 M^irex antiqims, Linn. Syst. Nat. ed. 10, p. 754; ed. 12, p. 1222. — Donov. 

 Brit. Shells, vol. i. pi. 31 (changed from despedus), — Maton 

 and Rack. Trans. Linn, Soc. vol. viii. p. 145, — Rack. 

 Dorset Catalog, p. 47, pi. 17, f. 4. — Turt. Conch. Diction, 

 p. 88, — MtJLLER, Zool. Danic, pi. 118. — Dili.w. Recent 



