348 MOLLUSCA. MURICIDjE. Fusus. 



cent shells were thrown upon the sands at Warren's Point, after a severe 

 thunder storm. 



EXTINCT SPECIES. 



1 . P. nexilis. — Obovate, elavate, with decussating elevated striae ; spiral 

 striae uniform, most prominent ; spire slightly produced — (Murex nexilis, 

 Brander, f. 55.) Sower. Min. Conch, t. cccxxxi — London Clay. 



2. P. Greenwoodii — Pyriform, with a short produced spire, reticulated with 

 scattered elevated striae ; beak pointed ; shell thin — Sower. Min. Conch. 

 t. ccccxcviii. — Crag. 



Two species are noticed as figured by Brander, whose work I have no op- 

 portunity of consulting, viz. f. 52, 53, and 54, which last is by Parkinson 

 (Org. Hem. 67-) considered as agreeing with Pgrula laevigata of Lamark, while 

 Mr Man tell (Geol. Suss. 268.) denominates it P. bidbiformis,—?. 52, 53, the 

 Murex pyrus of Brander. These two species occur in the London Clay. 



Gen. LXXIX. FUSUS.— Shell pisiform, ventricose in the 

 middle, spire produced ; right margin of the canal patu- 

 lous. 



* Whorls destitute of longitudinal ribs. 



329. F. antiquus. — Whorls eight, ventricose, with obsolete 



waved spiral striae, crossed by longitudinal wrinkled lines of 



growth. 



Bucc. album, laeve, List. An. Ang. 155. t. iii. f. i. Conch, t. Dccccxiii. f. 

 4. — Murex antiquus, Linn. Syst. i. 1222. — M. despectus, Penn. Brit. 

 Zool. iv. 124. t. lxxviii — M. antiquus, Midi. Zool. Dan. t. exeviii. 



Don. Br. Sh. t. xxxi.— M. desp. Mont. Test. Brit. 256 In deep bays, 



common. 



Length from 4 to 6 inches, greatest breadth between 2 and 3 ; white, the 

 inside with a yellowish tinge ; cuticle absent ; whorls thick, rounded, rather 

 coarse on the surface ; aperture ovate, the outer lip thin at the edge, inner 

 lip smooth, canal short, nearly straight. The animal is white, with a cor- 

 neous pyriform lid. It is used as a bait for cod, and sometimes as food. The 

 shell, suspended horizontally, is employed in the Zetland cottage as a lamp, 

 the cavity containing the oil, and the canal the wick. Dr Turton mentions 

 (Conch. Diet. 69.) two varieties in the shell ; the first with the whorls nearly 

 separated, and the second leaving the whorls furnished with longitudinal 

 ribs : in a specimen which I possess, the whorls are prominently angular in 

 the middle, and the specimen bears a close resemblance to the figure of Buc- 

 cinum carinatum of the Conchological Dictionary. 



330. F. corneus. — Shell lengthened, spirally striated ; the ca- 

 nal produced and slightly recurved. 



Buccinum angustius, List. An. Ang. 157. t. iii. f. 4. Conch, t. Dccccxiii. 

 f. 5. — Murex corneus, Linn. Syst. i. 1234. Penn. Brit. Zool. iv. 124. 

 t. lxxvi. f. 99. Don, Brit. Shells, t. xxxviii. Mont. Test. Brit. 258. 

 — In sandy bays, common. 



Length 3 inches, breadth about 1 ; shell white, usually covered with a 

 thick brown epidermis ; whorls nine, compressed with a deep separating line ; 



