UNIVALVE SHELLS. 



53 



Strombus Pes-Pelecani. — Pelican's Foot Stbombus. 

 Plate VIII. fig. 25. (Rostellaria Pes-Pelecani, Lamarck.) 

 Volutions surrounded by a row of tubercles ; lip expanded 

 into four palmate angular claws; body with two rows of 

 tubercles, gray or reddish-brown. Two inches long. In- 

 habits the British coasts. 



The shells composing this genus inhabit the ocean, and are in gen- 

 eral found on rocky shores. 



Strombus pugilis The Fighting Strombus. Plate 



III. fig. 8. Anterior lip prominent, rounded, smooth; spire 

 spinous; beak three-lobed, obtuse, flesh-coloured, reddish 

 or brownish, within paler and polished; back smooth; first 

 whorl of the spire crowned with spines, which in the others 

 grow gradually less ; the outermost whorl cancellate ; pillar- 

 lip much reflected ; three and a half inches long. 



Inhabits South America, and the shores of the West 

 India islands. 



D Spire, I front, n n n the outer lip, o pillar-lip, q canal or gutter. 



The young shells of this genus want the dilated hp, which is one of 

 the most essential characters of the Strombi, and are in consequence 

 liable to be confounded with the genei'a Buccinmn and Murex. 



Genus 26 MUREX. 



Animal a Limax ; shell univalve, spiral, rough, with 

 membranous sutures ; aperture oval, ending in an entire 

 straight or slightly ascending canal. 



Linnaeus divides the Murices into six families : *spinous, with a pro- 

 duced beak ; **sutm'cs expanding into crisi^ed foliations ; beak ab- 

 breviated ; ***ventricose, \^ith thick protuberant rounded sutvu-es ; 

 ***»more or less spinous, and without manifest beak ; *****vvith 

 a long, straight, subulate, closed beak, and unanned with spines ; 

 ******tapering, subulate, with a very short beak. 



Murex antiquus — The Antiquated Murex. Plate 

 VIII. fig. 26. (Fusus antiquus, Lamarck.) Oblong, trans- 

 versely striated; beak rather elongated; spire with seven 

 or eight convex volutions: yellowish white, aperture saf- 

 fron-yellow, with margin of outer lip acute, and entire. 

 From six to eight inches long. Inhabits the British coasts. 



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