@article {1196,
	title = {Turbellaria Brasileiros (9)},
	journal = {Bol Fac Fil Ci{\^e}nc. Letr Univ S{\~a}o Paulo Zool},
	volume = {16},
	year = {1951},
	note = {not copied},
	pages = {5-216},
	type = {article},
	abstract = {Describes:
Microstomum breviceps n. sp.
Microstomum rhabdotum n. sp.
Mentions:
Microstomum gabriellae},
	keywords = {Macrostomum},
	author = {Marcus, E}
}
@article {pdf,
	title = {Contributions to the natural history of Brazilian Turbellaria},
	journal = {Comunicaciones Zoologicas del Museo de Historia Naturla de Montevideo},
	volume = {3},
	number = {63},
	year = {1951},
	note = {2962},
	pages = {1-25},
	type = {article},
	abstract = {Mentions many different Macrostomida.},
	keywords = {Macrostomum},
	author = {Marcus, E and Marcus, E}
}
@article {pdf,
	title = {Richerche sui Turbellari Macrostomidae},
	journal = {Archivo Zoologico Italiano},
	volume = {36},
	year = {1951},
	note = {2117},
	pages = {289-341},
	type = {article},
	abstract = {Describes:
Macrostomum retortum n. sp.
Macrostomum orthostylum curvata n. var.
Macrostomum viride rostrata n. var.
Macrostomum appendiculatum distinguenda n. var.
Mentions:
Macrostomum lutheri
Macrostomum tuba gigas
Macrostomum obtusum
Macrostomum orthostylum
Macrostomum viride
Macrostomum appendiculatum
Macrostomum sensitivum
Promacrostomum gieysztori},
	keywords = {Macrostomum},
	author = {Papi, Floriano}
}
@article {pdf,
	title = {Turbellarienstudein am Lago Maggiore. II.},
	journal = {Istituto Italiano di Idrobiolgia {\textquoteright}Dott. Marco De Marchi{\textquoteright}},
	volume = { 6},
	year = {1951},
	note = {2814},
	pages = {165-176},
	type = {article},
	abstract = {Mentions:
Macrostomum appendiculatum
Microstomum lineare},
	keywords = {Macrostomum},
	author = {Steinb{\"o}ck, O}
}
@article {pdf,
	title = {Turbellarienstudien am Lago Maggiore. I.},
	journal = {Istituto Italiano di Idrobiolgia {\textquoteright}Dott. Marco De Marchi{\textquoteright}},
	volume = {6},
	year = {1951},
	note = {2815},
	pages = {137-164},
	type = {article},
	abstract = {Mentions:
Macrostomum tuba (says Macrostomum gigas is the same)
Microstomum lineare},
	keywords = {Macrostomum},
	author = {Steinb{\"o}ck, O}
}
@article {pdf,
	title = {Species of the genus Macrostomum (Turbellaria, Rhabdocoela) of the USSR (O vidach roda Macrostomum SSSR) [In Russian]},
	journal = {Zeitschrift der Moskauer Naturwissenschaftlichen Gesellschaft},
	volume = {56},
	year = {1951},
	note = {2655},
	pages = {31-40},
	type = {article},
	abstract = {Describes:
Macrostomum hystricinum n. nom.
Macrostomum parthenopeum n. sp.
Macrostomum fergussoni n. nom.
Macrostomum rossicum n. sp.
Macrostomum inflatum n. sp.
Macrostomum ensiferum n. sp.
Macrostomum contortum n. sp.
Macrostomum phytophilum n. sp.
Macrostomum japonicum var. quiritium n. var.
Macrostomum mosquense n. sp.
Macrostomum lacustre n. sp.
Macrostomum clavistylum n. sp.
Mentions:
Macrostomum orthostylum
Macrostomum amurense
Macrostomum korsakovi
Macrostomum tuba
Macrostomum infundibuliferum
Macrostomum pseudoobtusum
Macrostomum rhabdophorum},
	keywords = {Macrostomum},
	author = {Beklemischev, V N}
}
@booklet {pdf,
	title = {Species of the genus Macrostomum (Turbellaria, Rhabdocoela) of the USSR. [English Translation]},
	volume = {56},
	year = {1951},
	note = {2984},
	pages = {31-40},
	type = {misc},
	abstract = {Describes:
Macrostomum hystricinum n. nom.
Macrostomum parthenopeum n. sp.
Macrostomum fergussoni n. nom.
Macrostomum rossicum n. sp.
Macrostomum inflatum n. sp.
Macrostomum ensiferum n. sp.
Macrostomum contortum n. sp.
Macrostomum phytophilum n. sp.
Macrostomum japonicum var. quiritium n. var.
Macrostomum mosquense n. sp.
Macrostomum lacustre n. sp.
Macrostomum clavistylum n. sp.
Mentions:
Macrostomum orthostylum
Macrostomum amurense
Macrostomum korsakovi
Macrostomum tuba
Macrostomum infundibuliferum
Macrostomum pseudoobtusum
Macrostomum rhabdophorum},
	keywords = {Macrostomum},
	author = {Beklemischev, V N}
}
@article {pdf,
	title = {{\"U}ber zwei marine Macrostomida (Turbellaria) der Gattung Paromalostomum, Vertreter eines bemerkenswerten Organisationstypes.},
	journal = {Kieler Meeresforschung},
	volume = {8},
	number = {1},
	year = {1951},
	note = {2642},
	pages = {30-48},
	type = {article},
	abstract = {Describes:
Paromalostomum notandum n. sp.
Mentions:
Paromalostomum dubium},
	keywords = {Macrostomum},
	author = {Ax, Peter}
}
