256 A. Smith Woodward — On the Genus Notidanus. 



The principal cone is relatively large, and is followed by ten to 

 twelve secondary cones ; at its base the enamel of the crown ex- 

 tends far down upon the root, and the long anterior border thus 

 produced is strongly serrated for quite two-thirds of its extent. 

 A tooth of this species from the Red Crag of Woodbridge is also 



Fig. 2. — Tooth of Notidanus Meneghinii, Lawley. Red Crag, Suffolk. 

 [Reed Coll., York Museum.] 



preserved in the Eeed Collection of the York Museum. It is shown 

 of the natural size in the woodcut (Fig. 2). An anterior upper 

 tooth from the Eed Crag of Bawdsey is also perhaps referable to 

 the same form. 



21. N. D'Ancon^:, Lawley. 

 1877. iV. -D' 'Anconce, R. Lawley, loc. cit. p. 73, pi. iii. figs. 1, 2. 



A small species. The teeth consist of four to six acute cones, the 

 first or principal cone being very large compared with the others, 

 and the anterior edge is serrated for a considerable length. It is a 

 rare form in the Pliocene of Volterrano and Orciano Pisano, Tuscany ; 

 and Probst * also describes some teeth from the Miocene of 

 Baltringen, Wiirtemberg, under the same specific name, but this is 

 a very questionable determination. 



22. N. problematious, Lawley. 

 1877. iV. problewaticus, R. Lawley, loc. cit. p. 74, pi. iii. figs. 3, 4. 



This is a very doubtful species founded upon an upper tooth from 

 the Tuscan Pliocene, and merely named — as the author states — to 

 call attention to the peculiar specimen figured. 



23. N. anomale, Lawley. 

 1877. N. anomale, R. Lawley, loc. cit. p. 74, pi. iii. fig. 5. 



If the mandibular tooth figured by Lawley as the type of this 

 species is genuine — as seems probable, notwithstanding the fracture 

 across its middle — it represents the largest member of the genus 

 hitherto recorded. There are no less than 14 secondary cones, and 

 the tooth measures more than five centimetres in total length. The 

 principal cone and the three following are curiously contorted — 

 though it is possible that this may be an abnormal condition — and 

 the anterior edge of the first is strongly denticulated. An upper 

 tooth is also figured (pi. iii. fig. 6) which may perhaps belong to the 

 same form. Both are from the Pliocene of Tuscany. 



1 J. Probst " Beitrage zur Xenntniss der fossilen Fische aus der Molasse von 

 Baltringen," Wiirttb. Jahresh. vol. xxxv. (1879), pp. 166— 169, pi. iii. figs. 6—11. 



