aASTEBOPODOUS MOLLUSC A OF BERTVTCKSHIRE. 237 



raised, with nine or ten obtuse smooth ribs, obsolete at the suture, which 

 is a distinctly impressed line. Bodj'-whorl moi-e than twice the breadth 

 of the second, the lower part not ribbed : aperture oval, with a wide effuse 

 short canal bent to one side, the pillar smooth, the lip thin and even. 

 The Berwickshire specimen is considerably larger than any seen by Mon- 

 tagu, but Mr Edward Forbes tells me that he has seen it as large in several 

 collections. Mr Forbes is of opinion, that Brown's F. 'pyramidatus is 

 founded on a worn specimen of this species, — an opinion to which I give a 

 willing assent. 

 Captain Brown, in his Conchology, figures three new species, which, he says, 

 were found at Holy Island. These are : 



Fusus minimus, pi. 48, fig. 35, 36. 



Fusus punctatus, pi. 48, fig. 56, 57. 



Murex craticulatus, pi. 48, fig. 60. 



3. BucciNUM. Lixx^Etrs. 



Shell ovate, "with, a produced spire ; aperture oval, effuse at the base, 

 not lengthened into a beak ; pillar rounded, smooth ; outer lip plain : 

 operculum horny. 



1 . B. tmdatiim, shell ovate-conical, thick, white more or less tinged 

 ■with brown, marked with spiral ridges and strife, and transversely 

 ribbed ; ribs waved, oblique, obtuse, crossing only the upper 

 hali of the body ; whorls eight, rounded ; aperture white, roundish, 

 the pillar smooth, with a thick fold on the outer side of the short 

 canal ; outer lip somewhat sinuated, thick. Length 4|-, breadth 

 2 inches. Linn. Billw. Eec. Sh. 632. Pen. Brit. Zool. iv. 272. 

 tab. 76. Mull. Zool. Dan. tab. 50. fig. 1-4. 



Var. 2. Shell thin, covered with a horn-coloured rough epidermis, 

 the spiral ridges and the waved ribs of the body- whorl less distinct. 

 Length 3-iVths ; breadth 2 inches. Buc. striatum. Pen. Brit. Zool. 

 iv. 272. tab. 77. Buc. br. magnum, tenue, leviter striatum. List. 

 Conch, tab. 962. fig. 15. Tritonium ciliatum. Fabric. Faun. 

 Groenl. 401. 



Hob. Berwick Bay, about low-water mark, and in deep water, common. 



The throat of some of the immature shells is yellow, with the rim thin, 

 crenulate, white or tinged with pink ; and I have seen specimens in our 

 bay with a dark purplish-brown aperture, which some have suspected to be 

 a distinct species. These varieties were nearly two inches long. 



Our var. 2. Lister has described with accuracy in his Hist. Anim. Anglias, p, 

 157. tab. 3. fig. 3, where he says it differs from the B. undatum-1. because 

 it is very thin and smooth, while the latter is strong and heavy ; 2. in 

 having a more ample ajDertnre ; and, 3. in the almost total want of the 

 waved lines or ridges on the large whorl. These reasons many naturalists 

 have considered valid; and it has consequently been introduced as a 

 distinct species into our latest Fauna, under the name of B. Anglicanum, 

 which again Dr Fleming considers to be identical with the B. Humphrey- 

 sianum of the Zool. .Journ. v. i. p. 398. tab. 22. But, as Mr Gray has very 

 properly remarked, "the shells of the Buc. undatum and B. striatum of 

 Pennant have no other difference than that the one has been formed in 

 rough water, and is consequently thick, solid, and heavy ; and the other 

 in the still water of harbours, where it becomes light, smooth, and often 

 coloured." 



