MoUusca of Great Britain. 349 



Bulimus octonus. Brug. EncycL Meth. n. 47. Lam. 



Hist, des Anim. sans Vert. 6. p. 124. 

 Helix octona, (3. Gmel. Syst. Nat. 1. p. 3653. 



I am happy in being enabled to add the following very 

 respectable authorities for considering this shell as British. I 

 was lately presented with a specimen which I observed in the 

 cabinet of Mr. Henry Collins of Swansea, who assured me 

 that he had found it a few years ago, in company with the 

 Clausilia nigricans and Pupa umbilicata, in the walls of the 

 old castle at Oystermouth near Swansea. It is a young shell, 

 and has the remains of the animal in it. Mr. Dillwyn also 

 favoured me with a full-grown specimen, which he believes 

 was given him by Miss Hutchins, as collected by that lady 

 in the neighbourhood of Bantry, Ireland. This latter spe- 

 cimen was sent upon the above authority by Mr. Dillwyn to 

 the late Colonel Montagu to be named, who returned it for 

 further information. 



The Helix octona of Linnaeus, and probably also of 

 Dr. Pulteney, is the Helix octanfracta of Montagu and 

 other British authors. 



Genus VI. CLAUSILIA. Brap. 



Animal; corpore angusto, attenuato : tentaculis inferioribushre- 

 vissimis. 



Testa fusiformis, elongata, acuminata: spirA sinistrorsa, intiis 

 juxta aperturam ossiculo testaceo resiliente seu clauso 

 plerumque instruct^. Apertura laminis coarctata, ex- 

 tils compressa : peristomio continuo, undique libero, 

 reflexo. Umbilicus perangustus. 



This and part of the genus Cyclostoma of Lamarck (the 

 shells of which latter are uniformly dextral) have been, 



with 



