358 COLUJIBELLID^. 



Buccinnm rosaceum, Gould, Silliin. Journ. xxxviii. 197 ; Inv. 1st cd. 311, fig 195. 

 Columbdla rosacea, Stimi'SON, Check Lists, 5. 



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



color, closely covered with minute revolving lines, most conspicuous 



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



Fig. 627. -y^i^Qi-i as long or longer than the rest of the spire ; suture 



faintly impressed, but 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 



c.rosacea. ^^^^^ *^^® splrc ; pillar arcuated, a little flattened, smooth, 



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 ^-ariety ( Cooper') ; Banks, Sable 

 Island (mV^w). 



It belongs to Kiener's section of Co/iiiubel/a4ormed Bicccinum, 

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

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

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

 dermestoideum. Some specimens are Ijeautifully tinted with rose- 

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

 In one specimen there is something lil^e 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 aji- 

 pears smooth and shining. 



It is probable that both this species and Buccinnm 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 Avhite zones ; whorls five, flattened ; aperture sub-equalling the half of the 

 s})ire. 



ColurnheJht dhsimills, Stimpso\, Proc. Best. Soc N. H. iv. 114 (1851) ; Shells of New 



Enuland, 47 ; Check Lists, 5. 

 Buccinum zonule, Linsley, Shells of Connecticut, Sillim. Journ. o. s. xlviii. 285. 



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

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



