146 PLIOCENE MOLLUSCA. 



Though somewhat worn, its sculpture is sujfficiently distinct for identification, and 

 it deserves notice. It nearly approaches an Oligocene species, Ftisus Bosenbergi, 

 Ravn (pi. vi, fig. 7 of the work just mentioned), but I doubt whether it is the 

 same. It seems better in such case to give a shell a distinctive name than to 

 adopt for it an uncertain reference. I include it among the Searlesias, as it agrees 

 generally with the species I have grouped under that name. 



Searlesia Nordmanni, sp. nov. Plate XIV, figs. 4, 5. 



1894. Fusus Forbesi, Kendall, Joixru. Isle of Man Nat. Hist. Soc, vol. i, p. 419, pi. i, fig. 6 (?). 



Specific Characters. — Shell strong, fusiform, turreted ; whorls decidedly convex, 

 flattened above ; ornamented by about twelve longitudinal costae, rounded, reaching 

 the suture, equal to the spaces between them, and by strong transverse lines ; 

 suture deep and well marked ; mouth oval, angulate above, ending abruptly in a 

 short narrow canal, nearly straight or turning very slightly to the left ; outer lip 

 expanded, toothed inside as in S. Forbesi; inner lip closely adherent to the pillar. 



Dimensions. — L. 35 — 40 mm. B. 15 — 20 mm. 



Distribution. — Not known living. 



Fossil : Waltonian Crag : Little Oakley. Isle of Man. 



BemarJcs. — This distinct form is allied to S. Forbesi, but differs from it in shape 

 and in 1}he decidedly convex character of its whorls. At present full-sized 

 specimens are only known from the Isle of Man, but I have a few from Oakley, 

 smaller and possibly immature, which appear to be the same. There is one 

 specimen at Jermyn Street and two others in Mr. Harrison's collection from 

 the former locality. As I cannot find any species to which they can be referred, 

 I dedicate them to my friend Dr. Nordmann of Copenhagen. I understand he 

 is about to undertake the serious investigation of the Iceland Crag. Perhaps he 

 may find a specimen of this form in those interesting deposits. 



Searlesia alveolata (J. Sowerby). 



1829. Fusus alveolatus, J. Sowerby, Min. Concli., vol. vi, p. 45, tab. ixxv, fig. 1. 



1844. Fusus alveolatus, Nyst, Coq. foss. Terr. Tert. Belg., p. 495, pi. xxxix, fig. 21. 



1848. Trophon alveolatum, S. V. Wood, Mon. Crag Moll., pt. i, p. 49, tab. vi, fig. 8. 



1885. Fusus alveolatus, Lorie, Arch. Mus. Teyler (2), vol. ii, p. 96, pi. v, figs. 36, 37. 



1890. Trophon alveolatus, C. Eeid, Plioc. Dep. Brit., p. 258. 



1892. Murex alveolatus, van den Broeck, Bull. Soc. Beige Ge'ol., vol. vi (Memoires), pp. 120, 131. 



1912. Trophon alveolatum, Tesch, Med. v. d. Eijks. v. DelfstofEen, pt. iv, p. 82. 



Specific Characters. — See Mon. Crag Moll., pt. i, p. 49. 

 Dimensions. — L. 32 — 45 mm. B. 12 — 17 mm. 



