﻿14 



MR. R. B. NEWTON ON" A EOSSILIEEROITS [vol. lxxii, 



Family Fusidje. 

 Streptochetus sexcostatus (Beyrich). (PI. II, figs. 2 & 3.) 



Fusus sexcostatus Beyrich, Zeitschr. Deutscli. Geol. Gesellsch. 1856, vol. viii, 



p. 73 & pi. xxiv, fig. 2. 

 Streptochetus sexcostatus Cossmann, 'Essaisde Pal^oconchologie Compare ' 



1901, pt. iv, p. 31. 



Remarks. — Tins species, I believe, is represented in the English 

 'Crag deposits by Wood's Fusus waeli} a form that I am unable 

 "to recognize as the Belgian shell which was originally described by 

 Nyst from the Oligocene (Rupelian) rocks of that country. 

 A perfect comparison, however, is impossible, as Wood's type- 

 specimens do not appear to be in the British Museum. It is 

 worthy of notice that Wood directed attention to an artistic error 

 in his figure 10 b, which exhibited denticulations on the inner 

 surface of the labrum, a character which was neither present in 

 the English shell nor in S. sexcostatus from the German Miocene. 



Distribution. — Vindobonian (Holland) ; Messinian (North 

 •Germany) ; Anversian (Belgium) ; Lenham Beds (Britain). 



Family Ficid^;. 

 Ficus simplex (Beyrich). (PI. II, figs. 4 & 5.) 



Fyrula simplex Beyrich, Zeitschr. Deutscli. Geol. Gesellsch. 1854, vol. vi, 



p. 777 & pi. xviii (xv), fig. 3. 

 Ficula simplex Gottsche, Verhandl. Yer. Naturwissensch. Unter. Hamburg, 



1878, vol. iii, p. 182. 



Remarks. — Bolten's Ficus of 1798 antedates both Lamarck's 

 JPyrula and Swainson's Ficula, all of which are founded on the 

 same Linnsean type of Bulla ficus. 



Distribution. — Messinian (North- Western Germany). 



Family Turritellidj:. 



Tl'RRITELLA COMMUNIS RisSO. 



Turritella communis Risso, 'Histoire Naturelle tie 1'Europe Meridionale ' 



1826, vol. iv, p. 106 & pi. iv, fig. 37. 

 Turritella terebra J. de C. Sowerby, 'Mineral Conchology ' 1827, vol. vi, 



p. 126 & pi. dlxv, fig. 3, non Linnneus. 



Distribution. — Vindobonian (France) ; Coralline Crag to 

 Post-Pliocene (Britain) ; Recent (Mediterranean and British 

 Seas). 



Family Xenophorid^:. 



Xenophora sp. (PI. II, fig. 6.) 



Distribution. — This genus is unknown in the East Anglian 

 €rag deposits, although occurring in the Lenham Beds of Kent. 



1 Mon. Pal. Soc, Crag Mollusca, Suppl. 2 (1879) p. 9. & pi. i, figs. 10 a-10c. 



