. The biology of the protozoa. Protozoa; Protozoa. Fig. 190.—Difflugia lobostoma; plastogamic stages, formerly interpreted as evidence of conjugation. (From Calkins after Ethumbler.) KEY TO ACTINOPODA. Pseudopodia with axial filaments (axo- podia) Class 1. Actinopoda Pseudopodia without axial filaments (myx- opodia, filopodia, lobopodia). Class 2. Rhizopoda Class 1. Marine forms; central capsule present Sub-class 2. Radiolaria1 Salt or fresh water forms; central cap- suit absent Sub-class 1. Heliozoa 1 For keys to 4 Legions, 21 Orders, 36+ Families and several hundred genera and species, sec m
. The biology of the protozoa. Protozoa; Protozoa. Fig. 190.—Difflugia lobostoma; plastogamic stages, formerly interpreted as evidence of conjugation. (From Calkins after Ethumbler.) KEY TO ACTINOPODA. Pseudopodia with axial filaments (axo- podia) Class 1. Actinopoda Pseudopodia without axial filaments (myx- opodia, filopodia, lobopodia). Class 2. Rhizopoda Class 1. Marine forms; central capsule present Sub-class 2. Radiolaria1 Salt or fresh water forms; central cap- suit absent Sub-class 1. Heliozoa 1 For keys to 4 Legions, 21 Orders, 36+ Families and several hundred genera and species, sec monographs by Hertwig (1879), Haeckel (1887) and Schewiakoff (1926).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Calkins, Gary N. (Gary Nathan), b. 1869. Philadelphia, Lea & Febiger
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