Manchester Memoirs, Vol. Ixii. (19 17) 51. 



B. elongata, Brady, 1884, Chall. Rep., p. 401, pi. L, figs. 1 

 and 2 (?). 



Very rare and only found in Gathering" No. 7. 



92A. [BULIMINA ELEGANTISSIMA, d'Orbigny.] 



[Bulimina elegantissima, d'Orbigny, 1839, FAM. p. 51, pi. VII,. 



figs. 13, 14. 

 Bulimina elegantissima, Brady, 1884, FC. p. 402, pi. L, figs.- 



20-22.] 



Genus Bolivina, d'Orbigny. 

 93. Bolivina robusta, Brady. 



Bolivina robusta, Brady, 1881, Ouart. Journ. Micr. Soc, vol.- 



XXI, p. 57. 

 B. robusta, Brady, 1884, Chall. Rep., p. 421, pi. LIII, figs. 7-9. 



Frequent, but small, in Gatherings 3, 4, and 9, absent in 

 others. The specimens are not so stout and robust as 

 Brady's and incline towards B. dilatata, Reuss, in the setting-on 

 of the chambers and the tendency to sharpness of the peripheral 

 margin, but there can be no hesitation in assigning them to 

 Brady's species. 



94. Bolivina nobilis, Hantken. 



Bolivina nobilis, Hantken, 1875, Mitth. Jahrb. k. ungar. geol. 



Anst., vol. IV, pt. I, p. 65, pi. XV, fig. 4 

 B. nobilis, Brady, 1884, Chall. Rep., p. 424, pi. LIII, fig. 14, 15. 



This species is plentiful throughout the beds and some- 

 times show a tendency towards B. cenariensis, (Costa), the speci- 

 mens becoming flatter, and the periphery sharper than in the 

 type, whilst the longitudinal strife_ becomes less*numerous and 

 sometimes nearly absent. 



(We do not see any evidence of the variation in the direc- 

 tion of B. cenariensis. The specimens are all remarkably fine 

 and typical. A separate unnamed slide however occurs in the 

 collection labelled ^intermediate specimens" and these are no 

 doubt those referred to in the text. Taxonomically we think 

 they are referable to B. cenariensis, but all exhibit a more or 

 less prominent costation on the early chambers linking them 

 with B. nobilis.) 



