46 MOLLUSCA FROM THE CRAG. 



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



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

 Fusus (?) ELEGANS. S. JVood. Catalogue 1842. 



Tr. Testa cr asset, ovato-fusiformi ; apice obtuso, transversim striata, seu sulcata; an- 

 fractibus sex convexis ; suturis distinctis ; aperturd ovatd ; labro simplici, mtus IcBvit/ato ; 

 labia siiperne crasso dente munito ; 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 apertiu-e, it appears to belong to this genus, and probably is not far 

 removed from Tr. antiquum. It is covered with regular striae, 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 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 ha\'ing 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. 



BtrcciNUM GRACILE. Da Costa. Brit. Concli. t. 6, fig. 5, 1778. 

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



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

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



— Mont. Test. Brit. p. 158, 1803. 

 Fusus COENEUS. /. Sow. Mill. Conch, t. 35. 



— Nyst. Coq. foss. de Belg. 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. jS. Wood. Catalogue 1842. 

 Tritonium geacile. Loven. Ind. Moll. Scand. p. 11, 1846. 

 BUCCINUM ANGUSTIUS. List. Conch. t. 913, fig. 5, 1C85. 



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



Tr. Testa turritd, elonc/ato-fusiformi ; anfractibiis convexis, transversim striatis ; aper- 

 turd ovatd ; labro tenui, intus Icevic/ato ; canali elont/atd recurvd. 



