CASTEROPODOUS MOLLUSCA OF BERWICKSHIRE. 237 



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

 is u distinctly impressed line. Body-whorl more than twice the lre;ulth 

 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 tolls mo that ho has seen it as large in se- 

 veral collections. Mr Forbes is of opinion, that Brown's F. /*/ru*< 

 is founded on a worn specimen of this species, an opinion to which 1 



sea 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. 66, 57. 



Murex craticulatus, pi. 48, fig. 60. 



3. BUCCINUM. LlNNJEUS. 



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

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

 nperculum horny. 



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

 with brown, marked with spiral ridges and striae, and transverse- 

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

 half 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 4J ; breadth 

 2 inches. Linn. Dillw. Rec. 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 dis- 

 tinct. Length 3 T 8 5 ths ; 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. Granl. 401. 



Ilnl>. 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, crc- 

 nulate, white or tinned with pink ; and I have seen specimens in our bay 

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

 distinct species. These varieties were nearly two inches long. 



< hir vor. 2. Lister has described with accuracy in his Hist. Auim. Anglian, 

 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 aperture ; and, 3. in the almost total wont of 

 the waved lines or ridges on the laipj whorl. These reasons many na- 

 turalists have considered valid ; ami it has consequently been introduced 

 a.s a distinct species into our latest Fauna, under the name of It. ,1/y/mi- 

 niiHi. which again Dr Fleming considers to be identical with the It. Ilum- 

 l,lir.in<;,iiinHi of the Zool. Journ. v. i. p. :ill. tab. '-'li. 1 Int. as Mr Gray has 

 very properly remarked, *' the shells of the Buc. uiulatum and B. striatum 

 of Pennant .have no other difference than that the one has heeii 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." 



