576 PLIOCENE MOLLUSCA. 



Remarks. — The interesting and unique fossil from Selsey, belonging to the 

 York Museum and given under the above name, corresponds closely with a rare 

 form from the Italian Pliocene figured by Prof. Sacco, but it has two spiral lines 

 of conspicuous punctures, instead of one as shown in his figure. It is said to be 

 rare in the Astian de]josits. I only know of one specimen from the English Crag, 

 but Mr. Bell considers he has o1)tained another from Selsey. 



Gennx PYRGULINA, A. Adams, 1863. 

 Pyrgulina interstincta (Montagu). Plate XLIX, fig. 48. 



1803. Turho infersfiuctus, Montagu, Test. Brit., pt. ii, p. 324, i>]. xii, fig. 10. 



1848. Odostoiina pupa, S. V. "Wood, Mon. Crag Moll, pt. i, p. S6. pi. i.\, fig. 5. 



1853. Odostoinki interstincta, Forbes and Hanlev, Brit. Moil., vol. iii, p. 296, pi. xcvii, fig. 1. 



1859. Odostoniia interstincta, G. B. Sowei'by, 111. lud. Brit. Shells, pi. xvii, fig. 26. 



1848—84. Odostonda interstincta, Jeffreys, Ami. Mag. Nat. Hist. [2], vol. ii, p. 343, 1848 ; Brit. 



Conch., vol. iv, p. 151, 1867 ; vol. v, p. 213, pi. Ixxv, fig. 2, 1869 ; Proc. Zool. Soc, p. 353, 1884. 

 1873 — 76. Turbonilla interstincta, Segueuza, Boll. E. Com. Geol. dTtal., vol. iv, p. 354, no. 304, 



1873; T. Pyrgulina interstincta, vol. vii, p. 92, no. 551, 1876. 

 1878. Parfhenia inlerstlncta. G. O. Sars, Moll. Reis. arct. Norv., pp. 200, 360, 400, pi. xi, fig. 2, pi. 



xxii, fig. 14. 

 1878 — 1884. Parthenina interstincta, Monterosato, Euiun. e Siuon. Conch, Medit. (Gioru. Soc. Sci. Nat. 



Palermo, vol. xiii), p. 92, 1878 ; Pyr(jvJina interstincta, Nom. Gen. e Spec. Couch. Medit., \'. 86, 1884. 

 1883. Titrbonella {Parthenina) interstincta, Bucquoy, Dautzeuberg et DoUfus, Moll. mar. Rouss., 



vol. i, p 169, pi. XX, fig. 7. 

 1886. Odostoniia interstincta, Kendall and E. G. Bell, Quart. Jouru. Geol. Soc, vol. xlii, y>. 212. 

 1890. Parthenina {Pijrgnlina) interstincta, Carus, Prod. Faun. Medit., vol. ii, p. 277. 

 1892. Pi/rgulina interstincta, Sacco, Moll. Terr. Terz. Piem., pt. xi, jj. 66. 

 1892. Parthenina interstincta, Locard, Coq. mar. Cotes de France, p. 144. 

 1892—98. Chemnitzia interstincta, A. Bell, Eep. Yorks. Phil. Soc, p. 63, 1892; Proc. Roy. Irish 



Acad. [3], vol. ii, p. 628, 1893 : Trans. Eoy. Geol. Soc. Cornwall, vol. xii, p. 148, 1898. 



1900. Odostoniia interstincta, Marshall, Journ. of Conch., vol. ix, p. 292. 



1901. Pyrgulina interstincta, Conch. Soc. List, Journ. of Conch., vol. x, p. 20, no. 448. 



1901. Parthenia interstincta, Br^gger, Norges geol. Unders^gelse, No. 31, p. 661, pi. xvii, fig. 6. 

 1905. Parthenina interstincta, Kobelt, Icon, schalentrag. europ. Meeivscouch., vol. iii, p. 114, pl.lxx, 

 figs. 1, 2. 



1913. Pijrgtdinii interstincta, Dautzenberg et Durouchoux, Feuille Jeuues Natur., vol. xliv, p. 37, 

 pi. iii, tig. 13. 



1914. Parthenina interstincta, Cerulli-lrelli, Palaeont. Ital., vol. xx, p. 260, pi. xxii, figs. 61, 66, 



Sijecific/ Gliaractcrs. — Shell minute, oljlongo-conical, rather solid; whorls 5 — 6, 

 compressed, shelving abruptly towards a narrow and excavated suture ; the last 

 about one-half the total length ; ornamented by numerous closely-set costa? with 

 rows of obscure spiral strijB below the periphery, marked by inconspicuous 

 punctures at the Ixnse of the whorls, and a smooth base ; spire more or less elongate, 

 tapering to a lilunt point; mouth oval, angulate above, expanded below. 



I 



