ASTTRIS ROSACEA. 57 



Scaldisien: Belgium, Holland. Poederlien : Belgium. Pliocene of Italy : Valle 

 Andona, Monte Mario. Upper Pliocene and Pleistocene : Sicily. 



Remarks. — This species is said by Nyst to be rare in the Scaldisien deposits; 

 M. van de Wouver has, however, obtained many specimens during the excavation 

 of the new docks at Antwerp, and has sent me some of them for comparison Avith 

 those collected at Oakley, with which they correspond. 



C. suhulata has not been recorded hitherto from the Eno-Hsh Crao-. Prof. 

 Sacco reports it, " non frequente," from the Astian deposits of Val Andona. As it 

 is found perfect and unworn in the Poederlien and Scaldisien of Belgium, there 

 seems no reason to suppose that it is derivative in the English Crag. It is one of 

 the large group of Molluscs originating in Miocene seas which were still in 

 existence in the Anglo-Belgian basin in Waltonian times. The Crag specimen is 

 from Mr. Ogden's collection. 



Genus ASTYRIS, H. and A. Adams, 1853. 

 Astyris rosacea (Gould). Plate XIII, figs. 18, 14. 



1840. Buccitium rosaceum, Gould, Amer. Jourii. Sci., vol. xxxviii, p. 197. 



1841-70. Columbella rosacea, Gould, Rep. Inv. Mass., ed. 1, p. 311, fig. 19-5, 1841; ed. 2, p. 357, 



fig. 627, 1870. 

 1842. Mangella HolblMii (Beck), Moller, lud. Moll. Groeu., p. 12. 

 1858. Amycla (Astyris) rosacea, H. and A. Adams, Gen. Kec. Moll., vol. i, p. 137. 

 1872. Columbella {AsUjris) Holbbllii, Mon. Crag Moll., 1st Suppl. p. 9, tab. v, fig. 21. 

 1878. Pyrene rosacea, G. O. Sars, Moll. Eeg. Arct. Norv., p. 251, pi, xvi, fig. 1. 

 1883. Pyrene rosacea, Kobelt, Icon, sclialentrag. europ. Meevesconch., vol. ii, p. 34, pi. xxx, 



figs. 6—8. 

 1912. Columbella (Astyris) rosacea, Dautzenberg et Fischer, Camp. Scient. Pr. Monaco, vol. xxxvii 



(Mollusques), p. 145. 



Specific Characters. — Shell small, solid, ovato-conical, whorls 7, slightly convex, 

 the last much the largest, rather more than half the total length, excavated below ; 

 ornamented near the base by spiral lines, and by fine longitudinal plications on 

 the upper whorls ; spire regularly diminishing in size, ending in an obtuse and 

 slightly bulbous apex ; suture well-marked ; mouth short, ovate, angulate above ; 

 canal short, wide, turning to the left. 



Dimensions. — L. 10 mm, B. 4 mm. 



Disfrihntion. — Recent: northern and western Norway; Spitzbergen, Green- 

 land ; New England coasts. 



Fossil : Waltonian Crag : Little Oakley. 



Pleistocene : England — Bridlington ; Scotland — Fort William, Lochaber ; 

 Ireland — Balbriggan, Turbot bank, Antrim. 



