"206 Transactions of the Society. 



Linn. Soc. (Zool.), vol. xxv. p. 501, fig. 3 ; and var. margincdis, 

 p. 507, fig. 36. 



This form is represented by a few examples from Station 22 in 

 Area 2. The shell is very thin and there are rarely more than 

 two chambers. 



Of its distribution in the recent condition Brady writes,* " The 

 distribution of Polymorphina regina seems limited to compara- 

 tively shallow water in the neighbourhood of the islands of the 

 Pacific." 



Egger records it from Kerguelen Island, 57 fathoms. 



Dimorpliina d' Orbigny. 

 Dimorpliina lingulinoides sp. n., plate V. fig. 6. 



Test elongate, straight, compressed ; extremities rounded or 

 obtuse ; earlier portion biserial, with triangular chambers ; sutures 

 sinuous, not depressed; final portion Linguline ; aperture a long 

 slit, with protruding lips. Length 0*33 mm. 



This form closely resembles the D. compacta of the Coralline 

 Crag of Sutton, but is easily distinguished from it by the slit-like 

 aperture. 



In the tertiary beds of St. Erth Dimorphinoz are not uncommon, 

 but all the forms are compounded of the genera Polymorphism and 

 Zingidina, thus differing from all the described species with the 

 exception of PolymorpMna rcgularis var. parallcla f of the St. Erth 

 clay, which evidently belongs to this group. In Dimorpliina 

 Capcllini,X from the lower pliocene of Bonfornello in Sicily, the 

 aperture is a lipped slit, but it is slightly curved, and the chamber 

 to which it pertains is circular in transverse section. 



In the Malay Archipelago D. lingulinoides is very rare and has 

 been noticed only at Station 25 in Area 2. 



Uvigerina d' Orbigny. 



Uvigerina canariensis d' Orbigny, plate V. fig. 7. 



Uvigerina canariensis d'Orbigny, 1839, Eoram. Canaries, p. 138, 

 pi. i. figs. 25-27. U. canariensis (d'Orb.) Fornasini, 1891, Forami- 

 miniferi Pliocenici del Ponticello di Savena, pi. ii. fig. 26. U. 

 canariensis (d'Orb.), Woodward and Thomas, 1893, Geol. and Nat. 

 Hist. Survey of Minnesota, vol. iii. p. 39, pi. d, fig. 9. U. canariensis 

 (d'Orb.) Egger, 1893, Abhandl. k. bayer. Akad. Wiss., CI. II. 

 vol. xviii. p. 311, pi. ix. fig. 43. U. canariensis (d'Orb.) Goes, 1894, 



* Chall. Ropt.. 1884, p. 571. 



t Mill* tt, Trans. R. Geol. Soc. of Cornwall, vol. xi. 1895, p. 658, pi. figs. 5, 6. 



\ De Aniieis, Naturalista Siciliano, anno xiv. 1895, p. 45, pi. i. fig. 18. 



