Flabellinia

Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, it is the sqare-ish granular structure above the nucleus with its more homogeneous nucleolus. Differential interference contrast.

Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, but not visible here. Phase contrast.

Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, it is the granular structure below and to the left of the nucleus with its more homogeneous nucleolus. Differential interference contrast.

Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. Several cells to show the variation in this species. Phase contrast.

Paramoeba (para-me-ba) one of the naked amoebae. The pseudopodia are conical, but may be short or long. This is a picture of the rayed form the cell in which the pseudopodia are long. They arise from the hyaline zone. The pseudopodia project to the front, the smooth area at the back of the cell is the uroid. They eat bacteria, algae, detritus. There is a paranuclear body located alongside the nucleus, but not visible here. Phase contrast.

Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia. The most widely encountered genus with conical pseudopodia is Mayorella. This cell contains various food vacuoles with algal particles and other detritus in various stages of digestion. Uroid towards upper left. Phase contrast.

Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia. The most widely encountered genus with conical pseudopodia is Mayorella. This cell contains various food vacuoles with algal particles and other detritus in various stages of digestion. Uroid towards upper left. Phase contrast.

Korotnevella (caw-rot-know-vell-a) is an amoeba which produces (sometimes) many conical pseudopodia, although this cell has adopted the limax form - indicating how important it is to observe many cells before attempting an identification. Phase contrast.

Vexillifera (vex-ill-if-err-a) a naked free-living amoeba with irregular thin (sub)pseudopodia emerging from a hyaline region. The front of the cell is to the right. Phase contrast.

Neoparamoeba (knee-o-para-me-ba), naked amoeba, variable in appearance, with short or well developed pseudopodia arising from the hyaline cap. With a paranuclear body visible here above and to the right of the nucleus. Phase contrast.

Neoparamoeba (knee-o-para-me-ba), naked amoeba, variable in appearance, with short or well developed pseudopodia arising from the hyaline cap. With a paranuclear body. Phase contrast.

Neoparamoeba (knee-o-para-me-ba), naked amoeba, variable in appearance, with short or well developed pseudopodia arising from the hyaline cap. With a paranuclear body. Floating form. Phase contrast.

Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. Phase contrast.

Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. Phase contrast.

Vannella (van-ell-a), naked free-living amoeba, moves with a single pseudopodium directed forwards (i.e. is unipodial). Hyaline region very extensive. Posteriorly, the uroid is just a stiffened region of cytoplasm. Contractile vacuole and nucleus evident. Consumes bacteria. Very similar to Platyamoeba, distinguished usually by the slightly broader aspect. Phase contrast.

Vannella (van-ell-a) a fan shaped naked amoeba, made distinctive by the broad anterior margin (right) and extensive hyaline region. Nucleus located to centre bottom of cell, uroid (posterior end) is to the left. Phase contrast. Material from Nymph Creek and Nymph Lake, thermal sites in Yellowstone National Park, photograph by Kathy Sheehan and David Patterson.

Vannella (van-ell-a) naked amoeba, fan shaped, with very broad hyaline zone. Phase contrast micrograph.

Vannella, a small naked amoeba with a large hyaline region. The cell is moving towards the top of the image. The nucleus with central nucleolus is located to the left posterior of the cell, there are clear vacuoles which form part of the contractile vacuole complex. The most posterior part of the cell forms a slightly contracted uroid. From Lake Donghu, China. Phase contrast micrograph.

Series of images showing this amoeba migrating across the slide.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial) - here enclosing two separate bacteria. Phase contrast.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial). Contractile vacuole to the right, and posterior uroid. Phase contrast.

Platyamoeba (platte-ee-a-me-ba) is a naked lobose amoeba which typically advances with a single broad pseudopodium (i.e. is monopodial). Nucleus with nucleolus to the right, contractile vacuole tucked into the posterior uroid. Phase contrast.