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Stephenson, J. 1912. On a New Species of Branchiodrilus and Certain Other Aquatic Oligochaeta, with Remarks on Cephalization in the Naididae. Records of the Zoological Survey of India. 7, 3 (Jun. 1912), 219–241. DOI:https://doi.org/10.26515/rzsi/v7/i3/1912/163121.