ODOSTOMIA. 301 



suffused with snow-white points of several magnitudes. 

 The tentacula occupy the transverse extent of the mem- 

 brane from which they originate, coalescing at their bases 

 and diverging greatly to their points ; they are short, flat, 

 broad, bevelled, triangular, setose, with a snow-white line 

 from base to point, which terminates in each in a round, 

 minute, intense white flake, which gives them the aspect 

 of being clavate. The foot carries on a plain upper lobe a 

 pale, corneous, suboval, finely striated operculum." Pro- 

 fessor Loven observed the animal in Swedish specimens to 

 be white, with a narrow, entire mentum and a foot emar- 

 ginated in front.* 



This species is distributed all round the British and 

 Irish shores, so that although, like the majority of its 

 congeners, individuals of it are not over numerous, it 

 cannot be said to be rare or even very local. It ranges 

 to the coasts of Sweden, but is not known to the south 

 of Britain, and appears to be a characteristically Celtic 

 shell. 



O. DOLioLiFORMis, Jeffreys. 



Subglobose, spirally costellated or sulcated ; no longitudinal 

 ribs. Body longer than the spire. 



Plate XCVII. fig. 5. 



Walker, Testae. Minut. Rariora, f. 55? from which 7'«/io 

 ■Sandvicensis, Adams, Micros, pi. 14, f. 23 ; Mont. Test. 

 Brit. vol. ii. p. 332 ; Maton and Rack, Trans. Linn. See. 

 vol. viii. p. 187 ; Turt. Conch. Diction, p. 230. — Odostomia 

 Sandvicensis, Fleming, Brit. Animals, p. 310 ; Brit. Marine 

 Conch, p. 173. — Jiissoa Sandvicensis, Brown, 111. Conch. 

 G. B., p. 13, pi. 8, f. 26. 

 Odostuinia dolioUformis (not doliolum of Zeitschr. Mai.), Jeffrevs, Ann. Nat. 

 Hist, new ser. vol. ii. p. 342. 



* Ofversigt af Kongl. Vet. Akad. Forh. ]84(:i, p. 49. 



