BUCCINUM. 183 



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

 specimens from a single locality, and that the number on oi)posite 

 side-phites of the same individual is sometimes ditferent, so that 

 but little dependence can be placed upon the secondary chai'ac- 

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

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

 it aj^pears to me to be distinct. 



B. Zealandicum, Reeve. PL 79, fig. 384. 



Yellowish, the revolving lines between the ribs brown tinted. 



Length, 1*25 inch. 



? 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 rcA^olving lines, or, if 

 the color is normal, then it is probably a variety of B. ct/aneiim, 

 Brug. 



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



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

 elevated, whorls obscurely flatly ridged and minutelj' striated ; 

 lip simple, effused ; chestnut-brown. Length, L5 inches. 



Hab. unJiiiown. 



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 Buc. undatum or a ComineUa. 



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 

 striie are somewhat as in B. undafurn^ but sharper and more 

 regular, and the grooves are nai'rower and more deeply cut. 



Lengtli, 1-75 to 2"2.5 inches. 



Banks of Newfoundland. 



