Tanaka, O. & M. Omori. (1971). Additional report on calanoid copepods from the Izu region. Part 4. Haloptilus, Augaptilus, Centraugaptilus, Pseudaugaptilus, and Pachyptilus. <em>Publications of the Seto Marine Biological Laboratory.</em> 19(4): 249-268, figs. 1-7. (27-xii-1971).[details]