Schizopyrenida

Vahlkampfia (vall-camp-fee-a) (= Schizopyrenus - skitz-owe-pyre-een-us ?) a heterolobose amoeba, pseudopodia are produced in sudden bulges, and are lobose. Cyst with irregular outer wall. Differential interference contrast.

Stachyamoeba (stack-ee-a-me-ba) is a free-living amoeba, usually flattended, expanded anterior margin with broad hyaline zone. With filaments arising from the uroid. At one time treated as a gruberellid and probably related to the acrasids, it can be seen to have a flagellated stage with two flagella which indicates that it is a fairly conventional heteroloboseid. Phase contrast.

Vahlkampfia (vall-camp-fee-a) (= Schizopyrenus - skitz-owe-pyre-een-us ?) a heterolobose amoeba, pseudopodia are produced in sudden bulges, and are lobose. Large hyaline region. Also with posterior contractile vacuole, nucleus with nucleolus and various food vacuoles and inclusions. Usually with a small uroid giving rise to filaments, but this is not evident here. Phase contrast.

Stachyamoeba (stack-ee-a-me-ba) is a free-living amoeba, usually flattended, expanded anterior margin with broad hyaline zone. With filaments arising from the uroid. At one time treated as a gruberellid and probably related to the acrasids, it can be seen to have a flagellated stage with two flagella which indicates that it is a fairly conventional heteroloboseid. Cysts have an irregular wall. Differential interference contrast.

Vahlkampfia (vall-camp-fee-a) (= Schizopyrenus - skitz-owe-pyre-een-us ?) a heterolobose amoeba, pseudopodia are produced in sudden bulges, and are lobose. Large hyaline region. Also with posterior contractile vacuole, nucleus with nucleolus and various food vacuoles and inclusions. Also showing uroidal region (lower). Differential interference contrast.

Stachyamoeba (stack-ee-a-me-ba) is a free-living amoeba, usually flattended, expanded anterior margin with broad hyaline zone. With filaments arising from the uroid. At one time treated as a gruberellid and probably related to the acrasids, it can be seen to have a flagellated stage with two flagella which indicates that it is a fairly conventional heteroloboseid. Phase contrast.

Vahlkampfia (vall-camp-fee-a) (= Schizopyrenus - skitz-owe-pyre-een-us ?) a heterolobose amoeba, pseudopodia are produced in sudden bulges, and are lobose. Large hyaline regions. Also with posterior contractile vacuole, nucleus with nucleolus and various food vacuoles and inclusions. Usually with small uroids giving rise to filaments. Several cells. Phase contrast.

Some amoebae represent a threat to human health - they are the cause of an infection of the brain called amebic meningitis. Most of the forms which cause problems are known to favor warm waters - and the heated waters of Yellowstone present a heightened risk of infection - hence these informative signs to alert the public to the risks they take should they chose to swim in these waters.

Willaertia (will-ert-ee-as), a heterolobose amoeba. The heterolobose amoebae usually move with the pseudopodia forming as sudden bulges. A large anterior hyaline zone and a posterior uroid evident. Differential interference contrast.

Willaertia (will-ert-ee-as), a heterolobose amoeba. The heterolobose amoebae usually move with the pseudopodia forming as sudden bulges. This is the cyst with its exit pores. Differential interference contrast.

Tetramitus (tet-rah-might-us) is one of the heterolobose amoebae, which can be found as amoebae, flagellates or cysts. The amoebae produce their pseudopodia suddenly, a pattern of behaviour referred to as eruptive as opposed to the more usual slow progressive formation of pseudopodia. With file filaments making up the posterior uroid. Contractile vacuole located at the posterior end of the cell. Phase contrast.

Tetramitus rostratus.