46 MOLLUSCA FROM THE CRAG. 



2. Trophon elegaxs. Charlesworth. Tab. VI, fig. 2. 



r 



Atractodon elegans. Charlesworth. Mag. Nat. Hist. New Series, 1837, p. 219, fig. 23. 

 Fusus (?) elegans. S. Wood. Catalogue 1842. 



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

 fractibus sex convexis ; suturis distinctis ; aperturd ovatd ; labro simplici, intus lavigato ; 

 labio supernc crasso dente munito ; canali brevi, recurvd. 



Shell thick and strong, ovate-fusiform, 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. antiquum. It is covered with regular strias, which becomes 

 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 Tr. 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 having aerated the branchiae, and the canal there is more effectually formed 

 for that purpose. 



This shell was found on the beach at Felixton. 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. 



Buccinum 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. Sow. Min. Con. t. 35. 



— Ni/st. Coq. foss. de Beige, pi. 39, fig. 23, 1844. 



Fusus 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. Loven. Ind. Moll. Scand. p. 11, 1846. 

 Buccinum angustius. List. Conch, t. 913, fig. 5, 1(585. 



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



Tr. Testa turritd, elongato-fusiformi ; anfractibus couvexis, transversim striatis ; aper- 

 turd ovatd ; labro tenui, intus lavigato ; canali elonaatd recurvd. 



