Foraminifera name details
Rotalia veneta Schultze, 1854
Schultze, M. J. S. (1854). Über den Organismus der Polythalamien (Foraminiferen), nebst Bemerkungen über die Rhizopoden im allgemeinen. <em>Ingelmann, Leipzig.</em> 1-68., available online at https://books.google.pt/books?id=o7rk00_xueQC [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2021). World Foraminifera Database. Rotalia veneta Schultze, 1854. Accessed at: http://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=738633 on 2021-06-22
original description Schultze, M. J. S. (1854). Über den Organismus der Polythalamien (Foraminiferen), nebst Bemerkungen über die Rhizopoden im allgemeinen. <em>Ingelmann, Leipzig.</em> 1-68., available online at https://books.google.pt/books?id=o7rk00_xueQC [details]
From editor or global species databaseTranslation English translation from original by Schultze (1854)
"Rotalia veneta Tab. III, fig.1-5, Tab VII, fig.22-24
. Test compressed, a little convex on the dorsal side, no keel,the rim of the test is a bit rounded out due to the rounded chambers. In adult specimens 2 complete whorls, in the last whorl 7 to 8 chambers. The pores of the test are very fine and dense, o.xx in diameter (I cannot decipher the numbers in the internet copy, the enlargement is not good enough). The opening of the last chamber is small, crescent shaped, a bit directed towards the umbilical side of the test. The diameter of the first chamber ranges from 0.xxx to 0.xxx, the diameter of the whole test is 0.xx. Right and left coiled specimens are equally abundant. The test has in form and fine structure a great resemblance with Rotalia beccarii but the latter one is much larger, two thirds as large, and has a much smaller proloculus. I measured the proloculus (of several R. beccarii), with a diameter of 0.xx.
I found this spcies alive in the mud of the lagoon of Venice where it is very abundant, once also in the Lido. I have taken it with me to Greifswald (Northern Germany) where I still have living specimens after several months. I also know R. veneta from the Bay of Muggia in Triest where it can be found in the mud but it is rare there. The colour of the animal varies between red-brown, yellow-red and dirty brown. The last chamber was always colourless, sometimes several chambers were colourless. The animal usually starts to stretch out its filiform pseudopodes from the opening in the last chamber, only later pseudopodes will emerge from all the fine pores on the surface of the test.
Fig.1 presents a left coiled specimen with emerged pseudopodes, seen from above, fig. 2 the same specimen seen from below, fig. 3 the same specimen in front view with the opening of the last chamber being visible. Fig.4 is a young specimen, right coiled, only 2 chambers are filled with protoplasm, Fig. 5 is a larger specimen, right coiled."