LAGENIDA. 



31 



FORMS OF LAGENA IN FOSSIL DEPOSITS. 



RR. Rather rare. RC. Rather common. C. Common. VC. Very common. 



other well-marked modifications of Lagcna ; such as his Fismrina dentata, F. spinigera, Tetragonulina 

 is the same as Trigonulina globosa, Seg. 



