358 COLUMBELLID^. 



Buccinnm rosnceum, Gould, Sillim. Journ. xxxviii. 197 ; Inv. 1st cd. 311, fig 195. 

 Columbdla rosacea, Stimpson, Check Lists, 5. 



Shell small, elongated, acutely conic, white, tinged with rose 

 color, closely covered with minnte revolving lines, most conspicuous 

 near the base of the shell, in most parts microscopic ; lower 

 Fig. 627. -yyi^orl as long or longer than the rest of the spire ; suture 

 faintly impressed, )jut distinct ; aperture about two fifths 

 the length of the shell, narrow-ovate ; outer lip sharp, a 

 little everted, smooth within, gently curving to its junction 

 with the spire : pillar arcuated, a little flattened, smooth, 



C. rosacea. ^ '■ • i i i 



and white. Length, three tenths of an inch ; breadth, 

 three twentieths of an inch ; divergence, forty degrees. 



This little shell I took from fish caught off Cohasset. It has 

 since been frequently found in fishes taken in various parts of Mas- 

 sachusetts Bay. Eastport, white variety ( Cooper^ ; Banks, Sable 

 Island {Willis). 



It belongs to Kiener's section of Col umbel la-formed Bucdiium, 

 and greatly resembles his B. lacteum in size and general appear- 

 ance, but is different in color, wants the peculiar spots, and is not 

 toothed within the lip. It is not plaited like B. pulchelluni and B. 

 dermestoideum. Some specimens are l)eautifully tinted with rose- 

 red, but others are of a dingy-Avhite, or tinged only around the apex. 

 In one specimen there is something lilsC a dark band just above the 

 suture, and emerging from the posterior angle of the aperture. 

 The revolving lines are very minute, and in old specimens are 

 scarcely discerned on the spire. To the naked eye the shell ap- 

 pears smooth and shining. 



It is proljable that lioth this species and Buccimim lunatum actu- 

 ally belong to the genus Columbella. [There is now no doubt of it. 



Columbella dissimilis. 



Shell small, ovate-conical, solid, longitudinally substriate, fuscous, often with 

 three white zones; whorls five, flattened ; aperture sub-equaUing the half of the 

 spire. 



ColumhMi rliSsimilh, Stimpsox, Proc. Bost. Soc N. H. iv. 114 (1851) ; Shells of New 



England, 47 ; Check Lists, 5. 

 Buccinnm zonule, Linslet, Shells of Connecticut, Sillim. Journ. o. s. xlviii. 285. 



This species differs from the C. Innata in its want of revolving 

 lines on the rostrum, and in its color. Buccinum zonale, Linsley, 



