BioStor
 | Monograph of the species of Worms belonging to the subclass Gephyrea, with a notice of such species as are contained in the Collection of the British Museum (1868) Proceedings of The Zoological Society of London 1868: 76-114 |
 | February 13, 1868 John Gould (1868) Proceedings of The Zoological Society of London 1868: 71-156 |
 | XXIV.—Report on the rules of Zoological Nomenclature to be submitted to the fourth International Zoological Congress at Cambridge by the International Committee for Zoological Nomenclature (1898) Annals And Magazine of Natural History 2: 181-194 |