Manchester Memoirs, Vol. Ixii. (1917) 97 



231. Polymorphina lactea. var. oblonga, Williamson. 



Polymorphina lactea, var. oblonga, Williamson, 1858, Recent 

 Brit. Foram, p. 71, pi. VI, figs. I49-I49a. 



An exceedingly scarce variety in the Biarritz Marls. I am 

 only able to record one solitary specimen from Gathering No. 8. 



232. Polymorphina communis, d'Orbigny. 



Polymorphina (Guttulina) communis, d'Orbigny, 1826, Ann. 



"Sci. Nat., vol. VII, p. 266, No. 15. pi. XII, figs. 1-4. 

 Polymorphina communis, Brady, 1884, Chall. Rep., vol. IX, 

 p. 568, pi. LXXII, fig. 19. 



This connecting link between P. lactea (W. & J.) and 

 P. problema, d'Orb. is rare at the Cote des Basques, specimens 

 were not obtained until the examination of the material col- 

 lected in 1897. 



233. Polymorphina amygdaloides, Reuss. 



Globulina amygdaloides, Reuss, 1851, Zeitschr. deutsch. geol. 



Ges. vol. Ill, p. 82, pi. VI, fig. 47. 

 Polymorphina amygdaloides, Brady, 1884, Chall. Rep., vol. 



IX, p. 560, pi." LXXI, fig. 13. 



This is only a flattened variety of P. lactea, or perhaps 

 rather of P. gibba, as the sutures are generally marked bv fine 

 lines and are not depressed. The test is, as a rule, neatly formed 

 and of symmetrical outline, having an oval transverse section. 

 The species is very rare at Biarritz. 



234. Polymorphina compressa, d'Orbigny. 



Polymorphina compressa, d'Orbigny, 1846, Foram. Foss. 



Vienne, p. 233, pi. XII, figs. 32-34. 

 Polymorphina compressa, Brady, 1884, Chall. Rep., vol. IX, 



p. 565, pi. LXXII, figs. 9-11. 



Very rare, and apparently occurring only in the upper half 

 of the Marl. 



235. Polymorphina sororia, Reuss. 



Polymorphina (Guttulina) sororia, Reuss, 1863, Bull. Ac. Roy. 



Belg., [2], vol. XV, p. 151, pi. II, figs. 25-29. 

 Polymorphina sororia, Brady, 1884, Chall. Rep., vol. IX, p. 562, 



pi. LXXI, figs. 15-16. 



Very rare. The only specimens found are small. 



