NEPTUNEA ANTIQUA. 169 



far as I know, this form is very rare in tlic Crag, even in the later zones, the 

 characteristic variety of those deposits being- the var. striata, dealt witli below, 

 whicli, hoAvever, attains a much larger size, especially at the Icenian horizon. 



Var. striata, S. V. Wood. Plate XIX, figs. 7-10. 



1848. Trophon antiquum, var. striatum, S. V. Wood, Mon. Crag Moll., pt. i, p. 44, tab. v, fig. 1 c. 

 1867. Fiisus antiquus, var. striata, Jeffreys, Brit. Conch., vol. iv, p. 324. 



1912. Nej}tu7iea antiqua, subsp. striata, Dautzeiiberg et Fischer, Camp. Sclent. Pr. Monaco, vol. 

 xxxvii (Mollusques), p. 77, pi. i, fig. 9. 



BUtrlhutio)}. — Recent : sontli and south-east of Ireland, Dublin Bay, the Heb- 

 rides, Shetland (Jeffreys) ; Finmark. 



Fussil : Newbournian Cra.of : Sutton. Butleyan : Hollesley, 

 Butley. Icenian: passim. Pleistocene: Kelsey Hill, and elsewhere; Uddevalla 

 (Jeffreys). 



Dimensions. — L. 90 mm. B. -48 mm. 



Bemarhs. — The term striata was first used in 1848 for a variety of N. antiqua 

 by S. V. Wood, whose figure {op. cit., pi. v, fig. Ic), copied probably from a worn 

 specimen, was no doubt intended to represent the usual Icenian form of that 

 species. Afterwards Jeffreys {op. cit., p. 324) included under the same name shells 

 having " spiral strise stronger (than the type), two on each of the upper whorls 

 forming prominent ridges." MM. Dautzenberg and Fischer have recently figured 

 an example from Finmark as var. striata {op. cit., pi. i, fig. 9), and another as var. 

 Bromii (pi. ii, fig. 1) both of which answer to the above description, but those from 

 the Crag are nearer to the second than to the first. It is the variety of A^. antiqua 

 given on my PI. XIX, fig. 8, and not the finely striated form of British seas or the 

 var. striata of Jeffreys, which is characteristic of the English Crag. 



It may be interesting to point out that the sculpture of the present variety, 

 specially distinctive of the Icenian or latest zone of the Crag, resembles more nearly 

 that of N. contravia, of the Waltonian deposits, the earliest horizon of the Red Crag, 

 than it does that of the prevalent forms of N. despecta which are the predominant 

 fossils of the Newbournian or intermediate section of these deposits. 



If N. despecta is older than N. antiqua, a view to which the evidence seems to 

 point, this may represent a curious instance of reversion to an older type. 



Var. subtornata, nov. Plate XIX, figs. 2, 3. 



Varietal Characters. — Shell strong, rather small, turreted, fusiform, without any 

 distinct keel; whorls 7, convex, regularly diminishing in size, the last three-fourths 

 the total length ; ornamented by strong, numerous, well-marked spiral costse with 



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