BUCCINUM. 183 



teeth vary from 4 to 6, and those on the sides from 2 to 4 in 

 specimens from a single locality, and that the number on opposite 

 side-plates of the same individual is sometimes different, so that 

 but little dependence can be placed upon the secondary charac- 

 ters of dentition in distinguishing species, at least in this instance. 

 Dr. J. Gwyn Jeffreys considers B. Belcheri, Reeve, a variety ; 

 it appears to me to be distinct. 



B. ZEALANDICUM, Reeve. PI. 79, fig. 384. 



Yellowish, the revolving lines between the ribs brown tinted. 



Length, 1-25 inch. 



f New Zealand. 



This species never came from the locality assigned to it : it is 

 a true Buccinum and may be a form of undatum, having acci- 

 dentally deepened color upon the superior revolving lines, or, if 

 the color is normal, then it is probably a variety of B. cyaneum, 

 Brug. 



B. EFFUSUM, Reeve. PI. 79, fig. 376. 



Sliell ovately conical, thin, inflated, spire rather short but 

 elevated, whorls obscurely flatly ridged and minutely striated ; 

 lip simple, effused ; chestnut-brown. Length, 1-5 inches. 



Hob. unknown. 



The ridges of this species are of quite a superficial character. 

 The above is a copy of Reeve's description, which does not 

 mention longitudinal ribs, although they appear to be slightly 

 indicated in the figure. I do not know whether this may be a 

 depauperated BUG. undatum or a Cominella. 



B. TOTTENII, Stimpson. PI. 76, fig, 326. 



White; of a light and thin structure; spire acute ; suture im- 

 pressed, whorls seven, regularly convex; longitudinal folds about 

 twenty-two in number, not large, very regular, straight, not at all 

 oblique, and about equaling their interspaces in width ; these 

 folds are prominent on the spire, but usually obsolete on the 

 body-whorl, except occasionally at the suture ; the revolving 

 strhe are somewhat as in B. undatum, but sharper and more 

 regular, and the grooves are narrower and more deeply cut. 



Length, 1'75 to 2'25 inches. 



Banks of Newfoundland. 



