542 PLIOCENE MOLLUSOA. 



Sub-genus LINCTOSCALA, Monterosato, 1890. 

 Scala (Linctoscala) inclusa, de Boury, MS. Plate XLVIII, fig. 27. 



1870. Scalaria Turtonis, A. Bell, Auu. Mag. Nat. Hist. [4], vol. vi, p. 216. 



1871. Scalaria Turtonre, Jeffreys, in Prestwicli, Quart. Journ. Geol. Soc, vol. xxvii, p. 491. 



1872. Scalaria Turfoni, S. V. Wood, Mou. Crag Moll., 1st Siippl., pt. i, p. 58, pi. iv, fig. 7. 

 1872. Scalaria Turtonis, A. and R. Bell, Proc. Geol. Assoc, vol. ii, p. 216. 



1890. Scalaria Turtonis, C. Reid, Plioc. Dep. Brit., p. 256. 



1891. Scalaria (Fuscoscala) Turtonis, var. angliorum, Sacco, Moll. Terr. Terz. Pieni., pt. ix, pp. 18,21. 



SjJecific Gharacters. — Shell fairly large, turreted ; whorls convex and rounded, 

 regularly increasing in size ; ornamented by rather fine costse, oblique or curved 

 and somewhat irregular ; spire elongate, with an acute apex ; suture deep ; mouth 

 subcircular ; peristome continuous ; basal ridge wanting. 



Dimensions. — L. 30 mm. B. 11 mm. 



Distribution. — Not reported living! 



Fossil : Icenian Crag : Sudbourne Church-walks, Beccles. 



BemarJcs. — As stated in the last paragraph, M. de Boury proposed to 

 separate the shell described and figured by Wood (oj). cit.) as S. Tiirtoni from that 

 form. It differs materially both from the S. tcnnicostaoi foreign authors and from 

 the recent shell of our British coasts. In a letter received from the first-named 

 authority in January, 1918, he suggested for it the name of S. inclusa, in which I 

 follow him. The specimen here figured under that name is the one found by 

 Alfred Bell in the now inaccessible section of the Icenian Crag at Sudbourn 

 Church-walks, and was afterwards included in Jeffreys' list. M. de Boury says it 

 resembles S. trinacria, Phil., but that it is not the same. 



Suh-genns CIRSOTREMA, Morch, 1853. 

 Scala (Cirsotrema) fimbriosa (S. V. Wood). Plate XLVIII, figs. 1, 2, 6. 



1842—79. Scalaria fimhriosa, S. V. Wood, Ann. Mag. Nat. Hist. [1], vol. ix, p. 535, 1842 ; Mon. 

 Crag Moll., pt. i, p. 91, pi. viii, fig. 12, 1848; 2nd Suppl., p. 25, pi. iii, fig. 17, 1879. 



1871. Scalaria lamellosa, var., Jeffreys in Prestwicli, Quart. Journ. Geol. Soc, vol. xxvii, pp. 145, 

 491. 



1871—81. Scalaria fi^nhriosa.'Njst, Ann. Soc. malac. Belg., vol. vi, p. 128, no. 113,1871; Concli. 

 Terr. tert. Belg., p. 89, pi. vi, fig. 18 a, 1881. 



1872. Scalaria fimhriosa, A. and R. Bell, Proc. Geol. Assoc, vol. ii, pp. 204, 210. 



1874 — 92. Scalaria lamellosa, Y^r. fimhriosa. Van den Broeck, Ann. Soc. nialac. Belg., vol. ix, pp. 120, 

 136; S. fimhriosa, p. 292, 1874; Bull. Soc. Beige Geol.. vol. vi (Memoires), p. 147, 1892. 



