46 MOLLUSCA FROM THE CRAG. 



2. Trophon elegans. Charlesworfh. Tab. VI, fig. 2. 



Ateactodon elegans. Charlesworfh. Mag. Nat. Hist. New Series, 1837, p. 219, fig. 23. 

 Fusus(?) ELEGANS. S. Tf^ood. Catalogue 1842. 



Tr. Testa crassd, ovato-fusiformi ; apice obtiiso, transversim striata, sen sulcata; an- 

 fractibtis sex convexis ; suturis distincfis ; aperturd ovafd ; labro simplici, intus lavigato ; 

 lahio sitpernc crasso dente mimito ; canali brevi, recurvd. 



Shell thick and strong, ovato-fusiforra, regularly and rather coarsely striated 

 transversely ; whorls six, convex, with a distinct suture ; aperture ovate ; outer lip 

 plain and simple ; inner lip with a tooth or callosity at the upper part, upon the body 

 whorl. 



Axis, 3 inches. 



Locality. ? 



The shell from which the above figure is taken graces the cabinet of Mr. Robert 

 Fitch, of Norwich, and is, I believe, an unique specimen. In its general outline, and 

 in the form of the aperture, it appears to belong to this genus, and probably is not far 

 removed from Tr. antiqimm. It is covered with regular striee, which become coarser 

 towards the base of the shell. The specimen has been a good deal rubbed, especially 

 about the apex, which is now very obtuse ; and a part of the outer lip is broken away, 

 as well as a portion of the canal, so that the lines of growth indicate a greater length 

 than is now represented ; the outer lip is very slightly sinuated, like that of I'r. antiquum. 

 The callosity at the upper part of the left lip is similar to that observable in many 

 shells of the Buccinoid family, where a thickening of the left lip, near the upper angle 

 of the aperture, forms a sinus for the exit of the water, after ha\ang aerated the branchiae, 

 and the canal there is more effectually formed for that purpose. 



This shell was found on the beach at FelLxton. It is highly tinged with the oxide 

 of iron, and is probably from the Red Crag. 



3. Trophon gracile. Da Costa. Tab. VI, fig. 10, a — c. 



BccciNUM GRACILE. Da Costa. Brit. Conch, t. 6, fig. 5, 1778. 

 MuREX IsLANDicus. Gmel. Syst. p. 3555, 1788. 



— Chemn. vol. iv, t. 141, fig. 1312, 13. 



MuREX CORNEUS. Don. Brit. Shells, pi. 38. 



— Mont. Test. Brit. p. 158, 1803. 

 Fusus CORNEUS. J. Soio. Min. Conch, t. 35. 



— Nyst. Coq. foss. de Belg. pi. 39, fig. 23, 1844. 

 FusDS IsLANDicus. Lam. An. sans Vert. 2d edit. t. ix, p. 450. 



— Gould. Inv. of Massach. p. 284, 1840. 



Fusus ANGUSTius. S. Wood. Catalogue 1842. 

 Tritonium gracile. Lovhi. Ind. Moll. Scand. p. 11, 1846. 

 BucciNUM ANGUSTIUS. List. Conch. t. 913, fig. 5, 1685. 



Dale. Hist, of Harwich, pi. 10, fig. 7, 1730. 



Tr. Testd turritd, elongalo-fusiformi ; anfractibus convexis, transversim striatis ; aper- 

 turd ovatd ; labro tenui, intus leevic/ato ; canali elongatd recurvd. 



