122 PLIOCENE MOLLUSCA. 



the outer lip ; mouth obliquely ovate, strongly denticulate within ; inner lip 

 thickened and grooved; canal short, open; umbilicus wide and deep. 



Dimensions. — L. 30 mm. B. 20 mm. 



Distribution. — Not known living. 



Fossil : Newbournian Crag : AYaldringfield. 



Bemarhs. — A unique specimen of this very distinct form was obtained many 

 years ago by the late R. G. Bell from Waldringfield, and is now in the British 

 Museum (Nat. Hist.). It was referred to T. connedens hy Wood, though with 

 some doubt, but it seems to me to differ from the latter sufficiently to be entitled 

 to specific rank. I suggest it may be known appropriately as T. Woodii. It may 

 be, as Wood believed, derivative in the Crag. 



Genus MUREX, Linne, 1758. 

 Murex rudis, Borson. Plate XII, figs. 3 — 5. 



1822. Murex rtidis, Borsou, Mem. Acad. Tor., vol. xxvi, p. 308, pi. i, fig. 6. 



1856. Murex riidis, Homes, Foss. Moll. Wien, vol. i, j). 674, pi. li, fig. 6. 



1872. Mtcrex rudis, Bellardi, Moll. Terr. Terz. Piem., vol. i, p. 91, pi. vii, fig. 1. 



1876. Murex rudis, Seguenza, Boll. R. Com. Geol., vol. vi, p. 340. 



1886. Murex {Muricantlnis) rudis, Dollfus et Dautzenberg, Et. prel. Coq. Foss. Tour., p. 12. 



1894. Fusus Forbesi, Kendall, Journ. Isle of Man Nat. Hist. Soc, vol. i, p. 419, pi. i, fig. 5. 



1898. Murex rudis, A. Bell, Trans. E. Geol. Soc. Coruwall, vol. xii, p. 138, pi. i, fig. 3. 



1904. Murex rudis, Sacco, Moll. Terr. Terz. Piem., pt. xxx, p. 29. 



Specific CJuiracters. — Shell thick and solid, ovato-fusiform ; spire very short 

 with a blunt point ; whorls convex, somewhat depressed below the suture, rapidly 

 diminishing in size, the last much the largest, four-fifths the total length, excavated 

 below ; ornamented by strong, prominent and obtuse longitudinal ribs, becoming- 

 oblique in adult specimens as they approach tlie mouth, and by well-marked spiral 

 cost^ which extend to the base of the shell ; suture distinct ; mouth ovate ; outer 

 lip thickened by the labial rib, grooved within ; inner lip forming a glaze upon the 

 pillar ; canal short, open, turning to the left. 



Dimensions. — L. 25 mm. B. 15 mm. 



Distribution. — Not known living. 



Fossil : Cranstal Point, Isle of Man ; St. Erth. 



Pliocene : Italy, Sicily. Miocene : Touraine, Vienna, Italy. 



Bemarhs. — The specimen figured under this name is one of the shells from the 

 Isle of Man in the Jermyn Street collection which have been hitherto grouped under 

 the name of Fusus Forbesi; probably it may be identical with fig. 5 of Prof. 

 Kendall's plate {op. cit.). 



