Elements of zoölogy a Elements of zoölogy : a textbook elementsofzolo00tenn Year: c1875 494 PROTOZOA. chambers, and in the shell are many pores through which the pseudopodia are extended (747, 749). Some forms, however, which are closely allied to the Foraminifera, even if they are not included in the same group, have only one chamber in the shell. Such are Diffiuyia, Arcella, etc. (Fig. 751). FIG. 751. D E Various forms ol simple Khizopods. A. Difflugiaproteiformis ; B, D. oblonga; C, Arcella acuminata ; D, A. dentata; E, Lagena slriata (fossil). Magnified.

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