. The Protozoa. Protozoa. THE SARCODINA IO3 between the classes, and are supposed to show genetic relationships between the groups which they simulate. The close connection between the Mastigophora and the Sarcodina has been recognized since the discovery by F. E. Schultze ('75) and Biitschli ('78) of amoeboid forms with flagella. These are unmistak- ably animals which take in food at any portion of the body by means of pseudopodia, and move by means of flagella or pseudopodia. In some instances they are more like an Amceba (Mastigamoeba, F. E. Schultze, Fig. 57, A); in others they are more li
. The Protozoa. Protozoa. THE SARCODINA IO3 between the classes, and are supposed to show genetic relationships between the groups which they simulate. The close connection between the Mastigophora and the Sarcodina has been recognized since the discovery by F. E. Schultze ('75) and Biitschli ('78) of amoeboid forms with flagella. These are unmistak- ably animals which take in food at any portion of the body by means of pseudopodia, and move by means of flagella or pseudopodia. In some instances they are more like an Amceba (Mastigamoeba, F. E. Schultze, Fig. 57, A); in others they are more like a heliozoon (Cihophrys infitsionum of Cienkowsky, or Actinomonas of Kent, Fig. 57, B, Mastigophrys of Frenzel, etc.). Their undetermined position. Fig. 57. — Protozoa with both pseudopodia and flagella. A. Mastigamceba aspera F. E. Sch. [SCHULTZE.] B. Actinomonas pusilla S. K. [KENT.] ft flagellum ; «, nucleus; p, pseudopodia. in classification is indicated by the fact that sometimes they are in- cluded with the Sarcodina, while at other times they are regarded as flagellates. Klebs believes that the connection between the two groups is not quite so apparent as the mere description of these inter- mediate forms would indicate, and places between the primitive animal flagellates, the Vampyrellidas, and the Mycetozoa, an inter- mediate group, that of the Pseudosporese, with the genera Pseitdospora and Protomonas which Biitschli includes with the Flagellidia; while the Rhizopoda are derived from the Vampyrellidae through the Heli-. 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. New York, The Macmillan company; London, Mamcillan & co. , ltd.
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