254 PLIOCENE MOLLUSCA. 



1890. Haedropleura rnfa, Canis, Prod. Fauu. Medit., vol. ii, p. 415. 



1905. HaedrojjJetira rvfa, Kobelt, Icon, schaleutrag. europ. Meerescoucli., vol. iii, p. 328, pi. Ixxx, 

 figs. 16, 17. 



Specific Characters. — Sliell short, oblongo-fusiform, fairly solid ; spire turreted, 

 gradually tapering ; apex twisted ; whorls slightly convex, the last three-fifths the 

 total length ; suture rather deep ; ornamented by strong, flexuous longitudinal 

 ribs, which do not reach the base of the shell, and by fine spiral lines ; mouth 

 irregularly oblong, continuous with a very short, open canal, notched at the end ; 

 outer lip thin, rounded ; inner lip somewhat expanded ; pillar flexuous. 



Dimensions. — L. 10 mm. B. 4 mm. 



Distribution. — Recent: British coasts, eastern, southern and western. Ireland. 

 West of Scotland. Western coast of France, Mediterranean, Provence. North- 

 eastern America. 



Fossil : Waltonian Crag : Walton-on-Naze, Little Oakley. 

 Butleyan : Butley (A. Bell), Icenian : Thorpe, near Norwich. Wexford gravels. 

 Isle of Man. 



Pleistocene: March gravels, Bridlington, Belfast; Sicily — Monte Pellegrino, 

 Catania. 



Remarks. — This well-known British species has been found but rarely in the 

 Crag. Prof. Kendall obtained one or two specimens at Walton and Mr. A. Bell at 

 Butley, while it was reported in 1864 by Dr. S. P. Woodward from the Icenian 

 Crag of Thorpe. I have found a few at Oakley, several of them immature, and 

 in the March gravels. H. rnfa is unknown from any horizon of the Italian 

 Pliocene, but it appeared in the Mediterranean in Pleistocene times, where it still 

 lingers on, being found, according to Dr. Carus, on the coasts of Provence. 



H. rnfa is considered by Forbes and Hanley and by Jeffreys an equivalent to 

 Couthouy's North American shell, Fasus pleurotomariu.'i (Boston Journ. Nat. Hist., 

 vol. ii, p. 107, pi. vi, fig. 9). 



Var. Ulideana (Thompson). Plate XXIX, figs. 9, 10. 



1845. Plturotonia Ulideana, Thompsou, Aun. Mag. Nat. Hist. [1], vol. xv, p. 316, pl. xix, fig. 2. 



1853. Mangilia rnfa, vai*. Ulideana, Forbes and Hanley, Brit. Moll., vol. iii, p. 457, pl. cxii, fig. 5. 



1867. Pleurotoma rufa, var. Ulideana, Jeffreys, Brit. Conch., vol. iv, p. 393. 



1888. Pleurotoma rvfa, var. Ulideana, A. Bell, Rep. Brit. Assoc. (Bath), p. 136. 



Varietal Characters. — Differs from the type in its stronger sculpture; the 

 longitudinal ribs are fewer and more prominent, the whorls more convex, the 

 suture deeper, and the spire more slender and elongate. 



Distribution. — Recent : Strangford Lough, Co. Down, Connemara, Oban, Clyde 

 district, Skye. 



