42 



POPULAR ILLUSTRATIONS OP 



Figs 43-63. Groups of Foraminifera. 43, Orbulina univ ersa ; 44, Lagena vulgaris; 45, dittor 

 var. interrupta; 46, Entosolenia squamosa; 47, Nodosaria radicula; 48, Nodosaria pyrula ; 

 49, Dentalina legumen ; 50, Cristellaria calcar ; 51, Nonionina", Barleeana ; 52, Jeffreysii ; 

 53, N. elegans ; 54, Polystomella crispa; 55, Rotalina concamerata (mature) ; 56, ditto, young . 

 57, Globigerina bulloides ; 58, Bulimina Pupoides, var. spinulosa ; 59, Uvigerina pygmssa \ 

 60, Textularia variabilis; 61, T.variabilis, var, difformis; 62, Miliola bicornis, var. elegans'. 

 63, Spirilina arenacea. 



