BioStor
 | On some edible and other new species of Earthworms from the North Island of New Zealand W B Benham (1904) Proceedings of the Zoological Society of London 2: 220-263 |
 | XVIII. — Some earthworms from the North Island of New Zealand W B Benham (1905) Transactions of the New Zealand Institute 37: 281-285 |
 | XIV c. Oligochaeta für 1904, 1905 und 1906 W Michaelsen (1907) Archiv für Naturgeschichte 73: 1-56 |