Vejdovsky F 1880 (citation)- page 503, defines. See Marcus E 1945 (citation). Vejdovsky F 1882 (citation)- lists p 54 and describes Stenostoma unicola. Sekera E 1889 (citation)- definition p 319 and p 344 summary in German. p 319 list of species. Sekera E 1906 (citation)- on reproductive organs. Marcus E 1945 (citation)- definition "Cerebrum with 2 anterior and 2 posterior lobes clearly separated. The cerebrum located near the mouth. The preoral zone contains groups of sensory cells located in ciliated pits of the epidermis or arrayed in longitudinal precerebral series. The preoral region in the adult worms lack a ciliated groove separating it from the rest of the body. The intestine fills, laterally, a large part of the body cavity; caudally it varies in extent. Parenchyma is scarce. Excretory ducts occur frequently-" 2 Genera Stenostomum Rhynchoscolex Marcus E 1949 (citation)- lists, ref p 14, 15, 16, 17, 95. Luther A 1960 (citation)- definition in key. Karling TG 1974 (citation)- in list p 9.
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