16 



4. plicata. 



Odostomia plicata, Flem.^-Tmho plicatus, 

 Mont. — Jaminia plicata, Brown. — Turbo 

 conoideus, Brocchi? 

 Deep water. Rare. 



5. spiralis. 



Odostomia spiralis, Flem. — Turbo spiralis. 

 Mont. — Voluta spiralis, Mat. and Raek, 

 — Pyramis spiralis, Brotvn, (1st Ed.) — 

 Rissoa spiralis, Brown, (2d Ed.) 

 In shell sand from Kiristal. Scarce. 



XXIX. Rissoa, Frem. 



1. parva. 



Rissoa parva. Col. de Cherres, Br^wn, (2d 

 edit.) — Cingula parva, Flem. — Scalaria 

 parva, De Blainv. — Turbo parvus, Mont. 

 — -Turbo lacteus, Don. — Pyramis parvus, 

 Brown, 

 On fuci and in sand, not uncommon, Mr. Gray 

 has remarked, that Rissoa parva " has the power of 

 emitting a glutinous thread, by which it attaches 

 itself to floating sea weeds, and is enabled, when dis- 

 placed, to recover its previous position.""- — Proc. of 

 Zool Soc. Part I. 1833. 



2. alba. 



Rissoa alba, Brown, (2d edit.)-— Turbo albus, 

 Adams. — Cingula alba, Flem. — Pyramis 

 V. bus, Brown. 

 Not rare on fuci. Perhaps a variety of R. parva. 



