PYRGULINA SPIRALIS. 679 



1853. Odosfoinia spiralis, Forbes and Hauley, Brit. Moll., vol. iii, p. 299, pi. xcvii, fig. 2. 



1859. Odostomia spiralis, CI. B. Sowerbv, 111. lud. Brit. Shells, pi. xvii, fig. 29. 



1878. Parthenia sjnratis, G-. O. Sars, Moll. Reg. aret. Norv., pp. 200, 360, 400, pi. xi, fig. 4. 



1886. Odostomia spiralis, Kendall and R. Gr. Bell, Quart. Jouru. G-eol. Soc, vol. xlii, p. 212. 



1890. Parthenina spiralis, Cavus, Pi-od. Faun. Medit., vol. ii, p. 279. 



1892. Parthenina spiralis, Locard, Coq. mar. Cotes de France, p. 145, fig. 126. 



1892 — 98. Chemnitzia spiralis, A. Bell, Rep. Yorks. Phil. Soc, p. 6.3, 1892; Odostomia (Bissoa) 



spiralis, Trans. Roy. Geol. Soc. Cornwall, vol. xii, p. 149, 1898. 

 1898. Odostomia (Parthenina) S2)iralis, Bucquoy, Dautzeuberg et DoUt'us, Moll. uiar. Rouss., vol. ii, 



p. 794. 



1900. Odostomia s^nralis, Marshall, Journ. of Conch., vol. ix, p. 295. 



1901. Parthenia spiralis, Brfgger, Norges geol. Unders<^gelse, no. 31, p. 657, pi. v, fig. 14. 

 1901. Parthenia spiralis, Friele og G-rieg, Norske Nordhav. Exped.. no. 3 (MoUusca), p. 81. 

 1901. Spiralinella spiralis, Concli. Soc. List, Jouru. of Couch., vol. x, p. 20, no. 451. 



1905. Parthenina sjnralis, Kobelt, Icon, schaleutrag. europ. Meerescouch., vol. iii, p. 128, pi. Ixxi, 



figs. 11, 12. 

 1914. Parthenina spircdis, CeruUi-Irelli, Palaeont. Ital., vol. xx, p. 264, pi. xxiii, figs. 9 — 14. 

 1913. Pyrcjulina spiralis, Dautzeuberg et Durouchoux, Feuille Jeuue.s Natur., vol. xliv, p. 38, pi. iii, 



fig. 12. 

 1920. Pyryulina S2)iralis, Dautzeuberg, Journ. de Conch., vol. Ixv, p. 54. 



Specific Gluiracters. — Shell minute, rather solid, ovato-conical ; whorls 5 — 6, 

 flattened, rapidl_7 enlarging, the last about three-fifths of the total length ; 

 ornamented by numerous rather inconspicuous rilis which are cut off at the 

 periphery by a series of spiral ridges generally continuous over the base ; spire 

 short, pyramidal, ending in a blunt point ; suture narrow, excavated, nearly 

 straight ; mouth ovate, angulate above, rounded below. 



Dimensions. — L. 2 mm. B. 1'25 mm. 



Distribution. — Recent : British Seas, widelv distributed. Norweoian Coasts 

 from the Christiania fiord to Finmark. Lofoten Islands, Sweden, West Atlantic, 

 Mediterranean. 



Fossil : St. Erth. Selsey. 



Pleistocene : Dalmuir and elsewhere in Scotland. 



Holocene : Portrush, Mi/a-, Isocantia- and Tapes-hAB.k&, Christiania fiord. 



Remarks. — This variable species, which has a wide range as a recent shell and 

 is very common in the Pleistocene beds of Scotland, has not been met with in the 

 Anglo-Belgian Crag, though it has been reported by Messrs. Kendall and R. Gr. 

 Bell and by Mr. A. Bell from St, Erth, and 1)y the latter from Selsey. The four 

 specimens here figured are from the Museums at South Kensington, Jermjai St. 

 and York respectively, two of them bearing the name of Odostomia eximia and a 

 third of 0. interstiiicta. More correctly, I consider, they should be all identified with 

 Pyrgalina spiralis, a species the type of which is conical in form, and specially 

 distinguished by its sculpture, which shows the longitudinal costa? of the upper 

 part of the shell to be cut off abruptly at the periphery by a series of spiral ridges, 

 generally continuous to the base. The three figures here given vary in form, bitt 



