4G8 CONIDiE. 



abundant possibly in the south than in the north. It is 

 not a gregarious shell. It inhabits all depths of water 

 from three to sixty or seventy fathoms. It is not un- 

 common in the Zetland seas, though not recorded among 

 Norwegian species. Southwards it ranges to and through 

 the ]\Iediterranean, where it is a very common shell. 



M. Leufroyi, Michaud. 



White, with one or two bands of brownish splotches (never 

 lineated with brown) ; decussated by numerous longitudinal ribs, 

 and peculiarly dense fine spiral raised threads ; mouth nearly 

 equal to spire ; throat smooth ; labial sinus small, but distinct. 



Plate CXIII. %. 6, 7, and (Animal) Plate R. R. fig. 1. 



Pleurotoma Leufroyi, Michaud, Bullet. Soc. Linn. Bordeaux, vol. ii. (1828), 

 p. 121 (copied, Ferus. Bull. Sciences Nat. vol. xvii. 

 p. 308), f. 5, 6. — KiEXER, Coq. Vivant. Pleur. pi. 24, 

 f. 3. — Philippi, Moll. Sieil. vol. ii. p. 165. — Reeve, 

 Conch. Icon. vol. i. pi. 16, f. 131. 

 „ injlata, Philippi (as of Cristof. and Jan.), Moll. Sicil. vol. i. p. 197, 



pi. 11, f.24. 

 Fusus Boot/lit, Smith, Mem. Werner. Soc. (1839), vol. viii. pt. 1, p. 98, pi. 1, 

 f. 1. — Brown, Illu3t. Conch. G. B. p. 127, pi. 57, 

 f, 12. 

 Pleurotoma BootUi, Brit. Marine Conch, p. 196. 



The characters of this shell approximate closely to those 

 of the preceding species ; it is however larger, has more 

 crowded sculpture, and a different style of painting. 



The individuals met with on our own coast have a more 

 produced form than the typical specimens of the Mediter- 

 ranean. They are of a somewhat acuminated oblong-fusi- 

 form shape, not very strong, but little shining, and varie- 

 gated, on a ground of yellowish-white, with small splotches 

 of brown, that are most frequently disposed upon the body- 

 whorl in two irregular zones, the upper one of which is 



