149 



Species. 



1. articulata, Sowerby. 5. labiosa, Sowerby. 8. pusilla, Sowerby. 



2. brevis, id. 6. major, id. 9. subangulata, id. 



3. distorta, Deshayes. 7. polita {Turbo), Linn. 10. subulata {Turbo), Don. 



4. hastata, Sowerby. 



Fiyure. 



Eulima major. PL 15. Fig. 78. Shell, of polished porcelain white, 

 showing the aperture and oblique distortion of the spire. — From Mr. 



Cuming's collection. 



Genus 19. NISO, Risso. 



Animal ; unknown. 



Shell; turriculated, rather solid, polished, apex rather sharply 

 acuminated, whorls turned upon a more or less wide axis, 

 producing a deep umbilicus, columella simple, aperture rather 

 small, angular and slightly channelled at the base ; variously 

 painted. 



The genus Niso was founded by M. Risso in his ' Histoire Naturelle de 

 TEurope Meridionale/ p. 218, for the purpose of distinguishing a fossil 

 shell agreeing in general character with Lamarck's Bulimus terebellatus, 

 allied to the genus Eulima, but differing in having a deep umbilicus, occa- 

 sioned by the broad axis of volution of the whorls, penetrating nearly to 

 the apex. 



Among the shells collected by Mr. Cuming on the shores of Western 

 America, and figured by Mr. Sowerby in his ' Conchological Illustrations/ 

 are three, referred to the genus Eulima, which present the same remarkable 

 character as that above noted, accompanied by a variegated style of painting 

 and a sinuated inclination of the aperture. M. Deshayes, perceiving the 

 character by which these are distinguished from Eulima to be of import- 

 ance, arranged them in his edition of Lamarck, together with the fossil B. 

 terebellatus, as a new genus under the title of Bonellia. Had the genus, 

 however, not been anticipated by M. Risso, the name Bonellia could not 

 have been maintained, it being already given to a genus of Echinoderms 

 by M. Rolando, and published in the same work, vol. iii. p. 470. 



No observations have been made on the animal of this genus. Of the 

 species collected by Mr. Cuming, the N. splendidula and imbricata were 



