'52 HALKYARD, Fossil Foraminifera of the Blue Marl 



94A. [Bolivina variabilis, (Williamson.)] 



\Textularia variabilis (typica), Williamson, 1858, RFGB. p. 76, 

 pi. vi, figs. 162, 163 (incorrectly numbered 161, 162 on the 

 plate). 



Bolivina variabilis, Heron-Allen & Earland, 1914, etc., FKA, 

 1915, p. 647.] 



95. Bolivina jenariensis, (Costa.) 



Brizalina cenariensis, Costa, 1856, Atti. Accad. Pontaniana, 

 vol. VII, (2), p. 297, pi. XV, figs. 1 and 2. 



Bolivina cenariensis, Brady, 1884, Chall. Rep., p. 423, pi. LIII, 

 figs. 10, 11. 



Frequent in most of the gatherings but absent from No. 7 

 and rare in Nos. 8 and 9. thus predominating in the upper 

 portion of the beds. The examples are fine and well-marked. 



(A considerable percentage of the specimens show a ten- 

 dency to an. axial twist, which is not uncommon in the genus.) 



96. Bolivina punctata, d'Orbigny. 



Bolivina punctata, d'Orbigny, 1839, Voyage Amer. Merid., 

 vol. V (5), "Foraminiferes," p. 63, pi. VIII, fig. 10-12. 



B. punctata, Brady, 1884, Chall. Rep., p. 417, pi. LII, figs. 18, 

 19. 



Small and rather rare. 



96A. [Bolivina lobata, Brady.] 



[Bolivina lobata, Brady, 1879, etc., RRC. 1881, p. 58- 

 B. lobata, Brady, 1884, FC. p. 425, pi. LIII, figs. 22, 23.] 



97. Bolivina intermedia, sp. nov. 



PI. III. fig. 10. 



Test tapering, rarely parallel-sided, somewhat depressed, 

 rounded at aboral extremity, thickest in the centre on the longi- 

 tudinal axis, periphery rounded; segments few, and large, the 

 last being more depressed and having a sharper periphery than 

 the previous ones. Sutures sinuous, aperture large, occupying 

 nearly the whole of the superior extremity of the last chamber. 

 Sutures oblique, regularly curved at first, afterwards sinuate. 

 Length, .3 to .45 mm. 



This species is a connecting link between B. punctata 

 d'Orbigny and B. limbata, Brady. It resembles the first in its 



