GTJDE : HELICOID SHELLS OF THE CANARIES. 21 



Doubtful and Spurious Species. 



Vitrina fasciolata, Fer. Quoted by Perussac from. Tenerife, but not 



found by any subsequent naturalist. 

 Eyalinia [Polifa) semicostulata, lieck. Reeve gives the Canaries as 



a habitat ; but since it has never been confirmed, and 



since his records have frequently proved untrustworthy, 

 : it is advisable to remove tliis species from the list. 



Beck reported it originally from Portugal. 



Helix marcida, Shutt. > mi <? • i j. ■ i j? -u 



7 7 J.) ui i-i. I ihese tour species were obtained from bags 



meloiontna, ohiitt. f n i • j \ ■^ J^ • ■ ■ e 



, • 7 ',, . , > 01 dried orchil, the precise origin oi 



■ UDibicula, bhutt. ( •, . , , ' ^ ^ 



^u- CM ii 1 which was unknown. 



cmmentitia, ohutt. / 



elegantula, Jan. (one of the many forms of folymorplia-i a 



Madeiran species). 



anaglyptica, E.ve. 



^^nitidiuscula var. major. Flat Deserte, Canaries {sic, error 

 for Madeira). 



t(pniafa, W. and B. ) Two ^ladeiran species erroneously recorded 



tiarella, W. and B. ) from the Canaries by Webb and Bcrthelot. 



Bibliography. 



1810. — Ledru, Voyage aux lies de Tenerife, etc., i, p. 186. 



1832. — Quoy and Gaimard, Voyage de 1' Astrolabe, Zoologie, ii. 



1833. — Webb and Berthelot, Synopsis Molluscorum terrestrium et 

 lluviatilium quas in itineribus per insulas Caiiarias obser- 

 varunt : Ann. Sci. nat., xxviii,' p. 3(>7, etc. 



1839. — D'Orbigny, in Webb and Berthelot, Histoire Naturelle des 



lies Canaries, Zoologie ii, 2nd part. 

 1852. — Shuttleworth, Diagnosen Einiger neuen Mollusken aus den 

 Canarischen Inscln : Mitth. naturf. Ges. Bern, 1852, 

 p. 137, etc. 



1856. — Grasset, Description de Coquilles provenant des lies Canaries : 



Journ. de Conch., v, pp. 345 and 346. 

 1857. — Mousson, Appendix to G. Hartung's Geologische Verhaltnisse 



der Inseln Lanzarote und Fuerteventura : Neue Denksch. 



Schweizer. Ges. Naturw. Zurich, xv, art. 4, p. 130. 

 1859. — Mousson, On the Laud-shells of Lanzarote and Fuerteventura, 



with observations on the Molluscan Fauna of the Canary 



Islands in general : Ann. and Mag. Xat. llist., ser. iii, iii, 



p. 80, etc. 

 1861. — Lowe, Diagnoses of new Canarian Land Mollusca : Ann. and 



Mag. Nat. Hist., ser. in, vii, p. 104, etc. 



' Cited erroneously iu tlie Royal Society's Catalogue of Scieutific Papers as 

 vol. xxi.\. 



