544 PLIOCENE MOLLUSCA. 



Fossil : Waltonian Crag : Little Oakley. Newbournian : Wal- 

 dringfield, Briglitwell (probably elsewhere). Scaldisien : Antwerp. 



BemayJcs. — Prof. Sacco has pointed out that the two specimens described by 

 Nyst as 8. Jimhriosa are not alike, proposing to call the smaller of them Girsotrema 

 exfimhriosum. I have found at Oakley some broken specimens of what is evidently 

 the same shell, and there are others, fortunately fairly perfect, in the museums 

 at South Kensington and at York, which I am permitted to figure. I venture to 

 regard them, however, as varieties of the Anglo-Belgian ;iS'. fimhriosa i-ather than 

 of the allied Italian species 8. lamellosa as proposed by Prof. Sacco. 



Scala (Cirsotrema) lamellosa (Brocchi). Plate XLVIII, fig. 5. 



1814. Turbo lamellosus, Brocchi, Conch, foss. subap., vol. ii, p. 379, pi. vii, fig. 2. 



18-13—71. Scalaria ZawieKom, Nyst, Coq. foss. Terr. tert. Belg., p. 393, uo. 336, 1843; Aun. Soc. 



lualac. Belg., p. 116, no. 170, 1871. 

 1856. Scalaria lamellosa. Homes, Foss. Moll. Tert. Wieu., vol. i, p. 474, pi. xlvi, fig. 7. 

 1870. Scalaria lamellosa, A. Bell, Journ. de Conch., vol. xviii, p. 351, uo. 366. 

 1876. Scalaria lamellosa, Seguenza, Boll. R. Com. Geol. Ital., vol. vii, p. 96, no. 612. 

 1880. Scalaria lamellosa, Foutannes, Moll, plioc. Vail, du Ehone, vol. i, p. 123, pi. vii, fig. 17. 

 1890. Cirsotrema lamellosum, de Boury, Boll. Soc. Malac. Ital., vol. xiv, p. 199, no. 20. 

 1890 — 1. Cirsotrema lamellosum and vars., Sacco, Boll. Soc. Geol. Ital., vol. ix, p. 319, no. 5207, 1890 



Moll. Terr. Terz. Piem., pt. ix, p. 47, 1891. 

 1912. Cirsotrema lamellosum, Cossmanu, Ess. Paluoconch. compar., vol. ix, p. 50, pi. ii, figs. 27, 28. 



Specific Gharacters. — Differs from S. fimhriosa in sculpture; the longitudinal 

 costge are stronger, equally ])romincnt and regular, and are not interrupted by 

 prominent varices. 



Dimensions. — L. 32 mm. B. 12 mm. 



Distribution. — Not known living. 



Fossil : Miocene : Belgium, Piedmont, Vienna l)asin. 



Lower Pliocene : Biot, Piedmont, Ligurian coast— Savona, Albenga. 



Upper Pliocene : Piedmont, Parma, Bologna, Orciano, Reggio, Altavilla. 



Ilemarlis. — At first I was inclined to regard the Sutton specimen (PI. XLVIII, 

 fig. 6), from which the varices, generally so characteristic of S . fimhriosa, are absent, 

 as a variety of the Italian *S*. lamellosa. I am now disposed to agree with M. de 

 Boury that it should be rather considered an abnormal specimen of the former, 

 more or less intermediate between the two species. 



Scala (Cirsotrema) funiculus (S. V. Wood). Plate XLVIII, fig. 8, 



1842—74. Scalaria fimhriata, S. V. Wood, Aun. Mag. Nat. Hist. [1], vol. ix, p. 535, 1842; S. vari- 

 cosa, Mon. Crag Moll., pt. i, p. 90, pi. viii, fig. 14, 1848; S. funiculus, 1st Suppl., pt. i, p. 98, 1872 ; 

 pt. ii, p. 207, 1874. 



