158 malacozoa. gasteropoda. pectinibranchiata, 



Genus 2. Tornatella. 



Shell OTato-conical, siibcylinclrical, spirate, longitu- 

 dinally striate ; the spire short, pointed ; the aperture 

 oblong, very narrow behind, entire before, with the 

 peristome incomplete behind, the outer lip thin, the 

 columella with a strong obtuse plait at the base. 



The transition from Odostomia to Tornatella is ob- 

 vious, although authors place these genera at very great 

 distances, and even in different families or orders. 



1. Tornatella torndtiUs. Two-handed Tornatella. 



Shell ovato-conical, suhcylindrical, of moderate thickness^ 

 glossy; with the spire conveX; tapering to a small point; the 

 tiu-ns little convex, longitudinally striate, transversely striulate, 

 and slightly marked with growth-lines; the last whorl twice 

 as broad as the length of the spire ; more deeply striate an- 

 teriorly ; and towards the suture, the anterior strife minutely 

 crenulate ; the suture distinct, the edge of the whorls being 

 abruptly involute ; the aperture narrow-oblong, much narrowed 

 behind by the convexity of the last turn, the outer lip very 

 thin, the columella with an obscure prominent plait ; the 

 colour pale-reddish, with two longitudinal bands of white on 

 the last whorl, each band margined with two reddish-purple 

 lines. Length ten twelfdis of an inch, breadth nearly half an 

 inch. 



Not uncommon in deep water oif Aberdeen and Peterhead ; 

 frequently brought up by the lines, but seldom alive, and some- 

 times found on the beaches. 



Voluta Tornatilis. Linn. Syst. Nat. i. 1187. — Voluta Toruatilis. 

 Penn. Brit. Zool. iv. 117. — Vohtta Tornatilis. Mont. Test. Brit. 

 231. — Tornatella fasciata. Lamk. Syst. ri. 2. 220. — Tornatella 

 Tornatilis. Flem. Brit. Anim. 336. — Speo bifasciatus. Risso. Eur. 

 Merid. iv. 236. PI. viii. f. 107. 



2. Tornatella pellucida. Pellucid Tornatella, 



Shell ovato-conical, subfusiform, very thin, transparent, 

 glossy ; with the spire having a straight outline, and tapering 

 to a small point ; the turns little convex, longitudinally striate, 

 transversely striulate ; the last whorl nearly twice as broad as 

 the length of the spire, more deeply striate anteriorly and 

 toward the suture, where there are two punctulate impressed 

 lines, the anterior striae minutely crenulate ; the suture distinct^ 



