PLATE CIV. 



Rough, and our most common whelke. Dale Haw. p. 382* 



No., 3. 4. 

 Buccinum undatum, waved, Penn. Brit. Zool. No. 90. pi. 73. 

 Buccinum striatum, striated. Penn. Br. Zool. No. 9l.pl. 74. 

 Buccinum canaliculatum medium vulgare rufescens striatum, plurj- 



bus costis undatis distinctum. Vulgare Da Costa. 



Br. Conch, p. 122. sp. 73. fab. 6. fig. 6. 6. 



This is the common Whelke of English conchologists, and is some- 

 times brought to the markets as an article of food. The brown ones 

 are this common sort, for as Linnaeus observes, those that are brown 

 fasciated with white or blue arc scarce ; the former of those varieties 

 is figured in the annexed plate. 



Lister, Pennant and other authors have considered the striated va- 

 riety of this Shell as a distinct species; it is certainly destitute of those 

 prominent ribs or knobs which is so conspicuous in this Shell in ge- 

 neral, but the transitions from the striated kind to those with knobs 

 is so gradual and easy to be traced that we must coincide with Lin- 

 naeus and Da Costa who admit them barely as varieties. 



