310 MOLLUSCA. PECTINIBRANCHIA. Odostomia. 



the Turbo Ziczac of Maton and Rackett, Linn. Trans, viii. IGO.t. iv. £ 14* 

 found near Sunderland by Lady Wilson, is probably similar to this species, 

 may be regarded as correct. 



Gen. LI. ODOSTOMIA. — Shell conical ; aperture ovate ; 

 peristome incomplete retrally, and furnished with a tooth 

 on the pillar. 



253. O. unidentata. — Shell smooth, whorls five, shghtly 

 rounded, subpellucid. 



Turbo un, Mont. Test. Brit. 324. t. xxi. f. 2.— From deep water, not 

 common. 

 Length ith of an inch ; breadth =ds less ; white, glossy, delicate ; sepa- 

 rating line distinct ; apex blunt ; aperture ovate, a little expanded anteaUv ; 

 pillar-lip slightly reflected, ending retrally in a small tooth. 



254. O. plicata. — Shell smooth ; whorls seven, nearly flat. 



Turbo plicatus, Mont. Test. Brit. 325 — In deep water, not common. 

 Length f gths of an inch ; breadth less than Jjth ; white, opaque, solid ; se- 

 parating line distinct ; aperture ovate ; the outer lip nearly straight retrally ; 

 pillar-lip reflected, with a cavity behind ; the tooth, in the form of a ridge, 

 near the middle of the pillar — The descriptions of these two species have, by 

 some accident, been intermingled in Testacea Britannica. 



^55. O. spiralis. — Whorls 5, the lower part of the largest 

 striated spirally ; the remainder of the shell ribbed transversely. 



Turbo longitudinaliter striatus quinque anfractibus apertura subrotun- 

 da. Walk. Test. Min. 13. t. ii. f. 4G — Turbo spiralis, Mont. Test. 



Brit. 322. t. xii. f. 9 In Salcomb Bay, and Zetland. 



Length jV^-^) breadth ^'gth of an inch ; pellucid, glossy, white ; whorls 

 nearly flat ; the two upper spiral lines are the largest, join the outer lip, and 

 are continued along the separating line ; the transverse ribs are numerous, 

 and slightly raised ; aperture ovate, the outer lip nearly straight retrally ; 

 pillar lip reflected, with a slight cavity behind ; the tooth or fold is minute. 



9,5Q. O. hiterstincta. — Whorls 5, rather flat, and finely rib- 

 bed across. 



T. int. Mont. Test. Brit. 324. t. xii. f. 10 — Coast of Devon, rare. 

 Length one line, breadth |ds less ; glossy, white ; M-horls divided by a 

 small separating line ; apex obtuse ; aperture suboval ; pillar lip a little re- 

 flected, with a small tooth. Montagu refers to this species the Turbo inter- 

 stinctus of Adams, Linn. Trans, iii. 66. t. xiii. f. 23, 24. 



257. O. insculpta. — Whorls 6, rounded, and regularly striat- 

 ed spirally. 



Turbo in. Mont. Test. Brit. Sup. 129 — Coast of Devon, rai-e. 

 Ijength ith of an inch, breadth |ds less ; subpellucid, white ; taper, apex 

 obtusely pointed ; aperture subovate ; pillar-lip a little reflected, with a small 

 cavity behind. 



258. O. Sandviccnsis. — " The three spired elegantly reti- 

 culated turbo, with a one-toothed oval aperture, from Sand- 

 H'ich, vsiVQ.''—Wam. Test. Min. 15. t. ii. f. 55. 



