Macrostomum appendiculatum (1) brasiliensis Marcus, 1952 | 1946-1950 | upper littoral | sand mud | sand with mud in shallow water in the channel of Sao Sebastiao. In algae |
Harsa obnixa Marcus, 1951 | Feb, Jun 1952 or 1951 | shallow water | mud sand | in mud sand of the flats, where it lives with the Placorhynchid, Placorhynchus octaculeatus Karling / in asscociation with Placorhynchus octaculeatus |
Oneppus timius Marcus, 1952 | Mar, Jun 1952 or earlier Mar, Jun to 1946 | shallow water | mud sand | 100 specimens from sand with mud in shallow water near Caraguatatuba on the (channel) of Sao Sebastiao, where it feeds on Nematoda. Found with Harsa obnixa. / in asscociation with Placorhynchus octaculeatus |