Manchester Memoirs, Vol. Ixii. (191 7) 11 



and in those taken in April, 1897, which are also fairly high up 

 in the series. It must not be understood from this that M. 

 seminulum is absent from the lower beds, on the contrary it 

 has even been found in the hardest and lowest beds of sandy 

 and pure limestone. 



(The majority of the specimens are casts, but are referable 

 with tolerable certainty to M. circularis.) 



13. MlLIOLINA OBLONGA (Montagu). 



V ermiculum oblongum, Montagu, 1803, Test. Brit., p. 522, pi. 



XIV, fig. 9. 

 Miliolina oblonga, Brady, 1884, Chall. Rep., p. 160, pi. V, fig. 



4a, b. 



This variety is rare at Biarritz and nearly all the specimens 

 are small. 



14. Miliolina trigonula (Lamarck). 



Miliolites trigonula, Lamarck, 1804, Ann. Mus., V, 351, No. 3. 

 Miliolina trigonula, Brady, 1884, Chall. Rep., p. 164, pi. Ill, 

 figs. 14-16. 



Rare and small. 



[There are a good many typical specimens of fair size on 



the type-slides.] 



15. Miliolina tricarinata (d'Orbigny). 



Triloculina tricarinata, d'Orbigny, 1826, Ann. Sci. Nat. VII, 



p. 299, No. 7. 

 Miliolina tricarinata, Brady, 1884, Chall. Rep., p. 165, pi. Ill, 

 figs. 17a, b. 



This form is rare and has only been found in the upper 

 portions of the marl. 



(The specimens are in good preservation and very large 

 compared with those of M . trigonula. Both the long and .short 

 types are present.) 



16. Miliolina venusta (Karrer). 



Quinqueloculina venusta, Karrer, 1868, Sitz. k. Ak. Wiss. 



Wien., LVIII, Abth. 1, p. 147, pi. II, fig. 6. 

 Miliolina venusta, Brady, 1884, Chall. Rep., p. 162, pi. V, figs. 

 5 and 7. 



