274 PORAMINIFERA OF THE CRAG. 



Pietzpulil ; the Pliocene of St. Ertb, and the Coralline Crag. We have specimens 

 from Sudbourne Hall, zone d; Broom Hill, zones d and e; Sutton, zones e and f; 

 and Gedgrave, zone f. 



17*. Note on Polymorphina rugosa (Part I, Appendices I and II, see above). 



It is quite possible that P. rugosa had been noticed in the collections from the 

 Crag, but lost sight of; and that the P. hirsuta subsequently observed may be 

 quite distinct from the formerly recorded specimen of P. rugosa. A figure of the 

 latter is therefore given here, since it may have occurred, and may be found again 

 in the Crag. 



FlO. 23. — Polymofplihia rugosa, d'Orbi^ny. lu t}ie ' Trans. Linn. Soc.,' vol. xxvii, j)l. .xl, fig. 23a. 



X 12 diam. 



In the 'Trans. Linn. Soc.,' vol. xxvii, 1870, p. 237, it is described as having 

 its surface variously pitted and granular ; and it is said to have been met with in 

 shore-sand from Cuba and Martinique, and in some Tertiary deposits. 



Genus 2. — Dimokphina, tVOrUgnij, 1826. 



Brady, Challenger Report, 1884, p. 70. 



Orthoceras, Soldani. 



DiMORPHiNA, cVOrhifjny, Sander Rang, Menlce, von Beuss, Farlcer, Jones, Brady, 

 ScJiiuager, Karrer, von Schliclit, Buvignier, von Hantken, Costa, 

 Altli, Brown, Ehrenberg, Basset, von Zittel, and others. 



General Characters. — Early chambers obscurely triserial (Polymorphine) ; later 

 chambers uniserial (Nodosarian). Orifice at the summit of the terminal chamber. 



1. DiMOiiPHiNTA TUBEROSA, cVOrhigwj, 1826. Plate I, fig. 61 ; Plate VII, fig. 21. 

 Part I, Appendices Nos. I and II, Tables, No. 57 (" D. nodosaria," part). 



Orthoceras tuberosum, Soldani, 1791. Testaceograph., &c., vol. i, pt. 2, p. 99, 



pi. cvi, fig. gg. 



