Traits taxon details
original description
(of Ocnerodrilus occidentalis Eisen, 1878) Eisen, G. (1878). On the anatomy of Ocnerodrilus. <em>Nova acta Regiae Societatis Scientiarum Upsaliensis.</em> (3), 10(4): 1-12 + Plates I-II., available online at https://www.biodiversitylibrary.org/page/15387469 page(s): 10 [details] 
additional source
Eisen, Gustav A. (1900). Researches in American Oligochaeta: with especial reference to those of the Pacific coast and adjacent islands. <em>Proceedings of the Californian Academy of Sciences.</em> 2 (2): 85-276, 10 plates ( v-xiv)., available online at https://www.biodiversitylibrary.org/page/31548399 page(s): 113 [details] 
additional source
Michaelsen, W. (1910). Die Oligochäten-fauna der vorderindisch-ceylonischen Region. <em>Abhandlungen aus dem Gebiete der Naturwissenschaften, herausgegeben vom Naturwissenschaftlichen Verein in Hamburg.</em> 19(5): 1-108., available online at https://archive.org/details/abhandlungen-aus-dem-gebiete-der-naturwissenschaften-19-20/page/n433/mode/2up page(s): 100 [details] 
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