242 



all tliefe variations it preferves tlie invariable charafleriftic 

 mark of a fmall fpot of a dark purplifh colour at the outer 

 edge of the canal ; and has generally a purplifh tip. It is 

 at once dillinguiflied from the young of B. reticulatum 

 by the gibbofe outer lip. The length of this fpecies rarely 

 exceeds half an inch; breadth one quarter of an inch. 



It is not uncommon in fome of the fmall bays about 

 Falmouth; we have alfo found it on the north and fouth 

 coafls of Devonjliire, in DorfcfJJiire, and in Wales: and 

 once received it from a friend on the KentiJJi coaft for the 

 B. Pullus of LiNNiEUSj but is certainly not that fliell. 



5. 



Ambigucm. Buccinum ambiguum. Pidt. Cit. Dorfct. p. 42. 



B. with a thick, flrong, fub-conic, white (hell, with fix 

 flrongly ribbed fpires, finely ftriated tranfverfely : the ribs 

 are diftant, and fwell at the jun6tion of each fpire into 

 knobs or tubercles: aperture fub-orbicular; outer lip 

 thickened by the rib, fiightly denticulated; inner lip re- 

 plicated, with generally two faint diflant folds. Length 

 rather more than half an inch ; breadth three-eighths. 



We were firfl favoured with this fpecies from Doil^or 

 PuLTENEY, who fays, it is found between Weymouth and 

 Portland on the fimds, and on the north fliore at Poole. 

 The Doftor is certainly miftaken, in quoting the B. Pul- 

 lus and B. minutum of Pennant for this fhell ; the for- 

 mer being only a variety of the B, reticulatum, and the 



latter 



Tab. 9. f. 7. 



