402 MURICIDiE. 



— Blainv. Man. Malacol. pi. 22, f. 4; Faime Frantj. 

 Moll. p. 169, pi. 6, c, f. 2, 3.— SowERBY, Genera Shells. 

 Bucc. f. 1, 2. — KiENER, Coq. Vivant. Bucc. p. 3, pi. 2, 

 f. 5 ; transl. Storer, p. 3. — Sowerby (Jun.), Conch. Man. 

 f. 421. — SwAiNSON, Malacology, f. 71, c, at p. 301. — 

 Gould, Invert. Massach. p. 305. — Dekay, New York 

 Moll. p. 130, f. 161.— CuviER, Regne Anim. (ed.Croch.) 

 pi. 53, f. 1. — Reeve, Conch. Icon. vol. iii. Buc. pi. 1, f. 3. 

 Bticcinum striatum, Penn. Brit. Zool. ed. 4, vol. iv. p. 121, pi. 74, f. 91. 



„ canaliculatum, luiJffarc, Da Costa, Brit. Conch, p. 122, pi. 6, f. 6. 

 Tritonium undatum, Muller, Zool. Danic. pi. 50. — Middend. Malac. Ross. 



pt. 2, p. 151, pi. 4.f. 1,2,3. 

 Bucchmm Boniianum, Chemnitz, Conch. Cab. vol. ix. p. 57, pi. 105, f. 892, 

 893 (from Born, Test. pi. 9, f. 14, 15) sinistral. 

 „ carinatum, (not of Phipps, Gniel. Dillw.) Turt. Conch. Diction, p. 13, 

 f. 94, from which Fleming, Brit. Anim. p. 343, and 

 Blainv. Fauno Franq. Moll. p. 171 (deformed). — 

 Brown, 111. Conch. G. B. p. 126, pi. 57, upper f. 18. 

 „ acuminatum (abnormal variety), Broderip, Zoolog. Joum. vol. v. 

 (1830), p. 44, pi. 3, f. 1, 2. — Brit. Marine Conch. 

 p. 215 — Brown, 111. Conch. G. B. p. 4, pi. 3, f. 5, 6. 

 — Reeve, Conch. Icon. vol. iii. Buc. pi. 1, f. 4. 

 „ Anglicanum, Fleming, Brit. Animals, p. 243. — Macgilliv. Moll. 

 Aberd. p. 164. — Brown, 111. Conch. G. B. p. 4, pi. 4, 

 f. 1 1 ; and pi. 3, f. 2, 3. 

 „ from Zetland, Forbes, Mag. Nat. Hist. vol. viii. p. 593, f. 62. 

 „ Lahradorense, Reeve, Conch. Icon. vol. iii. Buc. pi. 1, f. 5. 

 „ impcriah. Reeve, Conch. Icon. vol. iii. Buc. pi. 2, f. 8 (deformed). 

 „ pyramidale. Reeve, Conch. Icon. vol. iii. pi. 13, f. 104. 

 Tritonium Humplircysianum, Loven, Index Moll. Scand. p. 12 (from specimen). 

 Murex undatus. Clark, Annals Nat. Hist. 2nd Series, vol. vii. p. 114. 

 Bticcinum tenerum (Fossil), Sow. Min. Conch, pi. 486, f. 3. 



The common whelk is one of the most variable of 

 Atlantic shells, as well as one of the most widely distri- 

 buted, and is not the less ■ interesting on either accoimt. 

 Its general outline is ovato-conical, passing through va- 

 rious degrees of elongation, from a short, squat, ven- 

 tricose shell to one remarkable for slenderness and grace- 

 ful curvature. These differences in contour may depend 

 on the greater or less ventricosity of the body-whorl, 

 or on the degree of production of the spire. The num- 

 ber of whorls in all the forms is about six, seven, or 



