﻿Manchester Memoirs > Vol. xlix. (1905), No. 5- 15 



* Bolivina limbata, Brady. 



Bolivina limbata, Brady ('84), p. 419, pi. 52, figs. 

 26-28. 



B. limbata, Egger ('93), p. 300, pi. 8, figs. 10-12. 



The specimens agree fairly well with the " Challenger " 

 figures in the above reference. In two of the specimens 

 the change from the biserial to the uniserial growth has 

 taken place, two uniserial chambers being added. Rare. 



A variety which occurs with greater frequency, and 

 comes nearest to this form, is broader than the type and 

 the parallelism of the sides is lost. In the large specimens 

 the tests are not so transparent, and have a milky-blue 

 appearance. The tendency of variation, especially in the 

 smaller examples, is towards B. nitida, Brady. Frequent. 



Bolivina robusta, Brady, var. compacta, nov. (PI. 3, 



fig. 7). 

 The test is not so broad as B. robusta Brady ('84), 

 pl- 53? fig- 7> an d the sides are rounded, and in transverse 

 section the shell is more regularly oval. It is never 

 armed with a spine at the aboral end as is often the case 

 with B. robusta. The test is rather coarsely perforated, 

 and in most cases the raised edges of the puncta coalesce, 

 forming a beautiful areolation which gives to the shell a 

 silvery look. Rather rare. 



Bolivina difformis, Williamson, sp. 



Textularia variabilis, var. difformis, Williamson ('58), 

 p. 77, pi. 6, figs. 166, 167. 



Bolivina pygmcea, Brady ('84), p. 421, pi. 53, figs. 5, 6. 



There is only a single and doubtful example that can 

 be brought under this species, and it is nothing more 

 than one of the weak forms referred to under Textularia 

 rhomboidalis, Millett, which has broadened out and 



