216 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL.6 



EXPLANATION OF PLATE 25 



Figs. 



1-3. Bolivina pseudoheyrichi Cushman. 1, 2, x 120. 3, x 70. a, 

 front view; b, apertural view. 



4-7. Bolivina pseudoplicata Heron-Allen and Earland. (?) 4, 5, 

 X 120. 6, X 145. 7, X 130. a, front view; h, apertural view. 



8-12. Bolivina pygmaea H. B. Brad.y. 8, 9, 12, x 130. 10, 11, x 70. 

 aa, front views; bb, apertural views. 



13. Boli'vina quadrata Cushman and McCulloch, new species. 

 X 130. a, front view; b, apertural view. Holotype. 



14. Bolivina seminuda Cushman. x 70. 



