APPENDIX. 313 



Spec. Char. " Testa ovato-turritd, crassiusculd ; spird enormiter acuminato-productd, apice papillari ; 

 anfractibus spiraliter striatis, superne concavis, vix anyulatis ; aperturd ampld, lubro incrassato subrefiexo ; 

 albida." — Reeves. 



"Shell ovately turreted, somewhat thick; spire enormously produced, with a mammillated apex; 

 whorls spirally striated, concave on the upper part, scarcely angulated ; aperture large, with a thickened, 

 slightly reflexed outer lip." 



Length (of the recent shell), 5 inches. 



Locality. Red Crag, Ramsholt. Recent, British Seas. 



The fragment of a shell in my cabinet corresponds with the young or spiral portion of the above- 

 named recent species, and this is all that I have seen ; it is thin and fragile, having lost its outer coating, 

 and is quite smooth, and it is placed provisionally in this position. 



Trophon propinquum? Alder. Tab. XXXI, fig. 3, a, b. 



Fusus PROPiNQUTJs. Alder. Catal. Moll. Northum. and Durh., p. 63. 



— — Forb. and Hani. Hist. Brit. Moll., vol. iii, p. 419, pi. 103, fig. 2. 



— Sabini. Forbes. Mem. Geol. Surv. Grt. Brit., vol. i, p. 42fi. 



The British conchologists appear to consider they have well-defined characters for the separation of 

 T. Islandicum and T. propinquum, the former having a mammillated apex, while in the latter the volution is 

 commenced from a much smaller point ; the pullus of each being sufficient to determine the species. In 

 addition to which the propinquum is said to be comparatively much shorter and more tumid, or less 

 elongated than the other. My Coralline Crag specimens appear to preserve a sort of intermediate character, 

 and I have thought it necessary to give an enlarged representation of the spire of our shell, which is 

 certainly not mammillated, and corresponds in its elongated and elegant form with T. Islandicum, having 

 eight volutions, with a length of one inch and a quarter, and its greatest diameter T 7 5 ths of an inch : thus 

 appearing to unite the distinguishing characters of the two recent species. The specimens from the Red 

 Crag are tolerably abundant, but the apex — the character by which it is said to be distinguished — is generally 

 more or less injured. It has been found at Bridlington, and in the Drift in Ireland. 



Trophon Fabricii, Beck. Tab. XXXI, fig. 4. 



Trophon Fabricii. {Beck) ex Mailer. Ind. Moll. Groenl., p. 14, 1842. 

 Tritonium craticulum. Fabricius. Faun. Groenl. Fide Matter. 

 Fusus Fabricii. Forbes. Mem. Geol. Surv., vol. i, p. 425. 



Spec. Char. Testa oiato-turritd, vel ventricoso fusiformi ; costatd, costis acutis, angulatis; transversim 

 striata, striis prominulis remotis ; aperturd ovatd ; I abro incrassato, intus Icevi ; cavdd brevi ; columella 

 plana. 



Shell ovately turreted, or ventricosely fusiform ; costated, ribs sharp and angulated ; transversely 

 striated, striae slightly prominent and remote ; aperture ovate ; outer lip thickened, smooth within ; canal 

 short; columella plain. 



Length, \ inch. 



Locality. Drift Beds, Wexford (Forbes). Recent, Greenland. 



" This beautiful species, which was not observed in the Drift Beds until found in Ireland by Captain 

 (Major) James, is intermediate in its character between Fusus scalariformis and Fusus Barvicensis. It has 

 the general form and ventricose whorls of the former, with the fimbriated ribs of the latter." — Forbes. 



The figure is from the only specimen that I have seen. It is in the Museum in Jermyn Street. 



41 



