28 (Bulletin of the (Natural History Society. 
It is one of the most common littoral species and is quite variable. 
The three-handed white and yellow varieties occur frequently, while 
the form and sculpturing of the shell are subject to much variation. 
17. — COLUMBELLA LU N AT A. — So werby. 
Astyris LUtf ata Say. I). 
Shediac, Whiteaves (I). 
18. — COLUMBELLA DISSIMILIS.— Stimpson. 
Astyris zonalis. Verrill (F). 
Eastport, Stimpson (A). Grand Manan, eight f., Stimp- 
son (A), (B). Eastport, ten to sixty f., Verrill (F). 
19. — COLUMBELLA ROSACEA.— (Gould), Stimpson. 
Astyris rosacea. H. and A. Adams (F). 
West Isles, ten f., gravel, Stimpson (A). Grand Manan, 
deep water, Stimpson (B). Eastport, Gould (E). Bay 
of Fundy, eight to sixty f., Verrill (F). 
20. — BELA PLEUROTOMARIA. — (Couthouy), Adams. 
Mangelia pyramidalis. Stimpson (B). 
Grand Manan, Stimpson (A), (B). Eastport, Gould (E). 
Bay of Fundy, not uncommon, eighteen to sixty f., 
Verrill (F). Eastport harbour and Bay of Fundy 
fifteen to eighty f., Verrill (N). 
21. — BELA C AN CELL AT A. — ( Mighels), Stimpson. 
Mangelia caxcellata. Stimpson (B). 
Grand Manan, twenty-five f., Stimpson (B). Bay of 
Fundy near Eastport and Grand Manan, ten to one 
hundred f., common, Verrill (M), (N). Northum- 
berland Straits, Whiteaves (I), (H). 
