NO. 4 CUSHMAN AND MCCULLOCH : SOME VIRGULININAE 199 



EXPLANATION OF PLATE 22 



Figs. 



1. Boli'vina albatrossi Cushman. x 120. 

 2-6. Bolivina argentea Cushman. x 50. a, front view; b, aper- 



tural view. 

 7-13 Bolivina bramlettei Kleinpell. 7, 9, 10, 12, 13, x70. 8, x 90. 

 11, X 60. aaaa, front views; bbbb, apertural views. 



