184] 



The Classification of Lower Organisms 



- ^ / m\^■^V^//'":^^^^^.^V^\\■•\\ 



Fig. 36 — Shells of Rhizopoda. a, Ophthalimidium. h, c, Triloculina. d, Verte- 



bralina. e, Peneroplis. f, Archaias x 25. g, Nodosaria. h, Dcntilina. i, Flabel- 



lina. j, Lagena. k, 1, Nonion. m, n, Rotalia. o, Globigerina. x 50 except as 

 noted. 



