Regalecus, ii. [432]
Region, the best term for the primary zoological divisions, i. 68
Arctic, why not adopted, i. 69
Palæarctic, defined, i. 71
Palæarctic, subdivisions of, i. 71
Ethiopian, defined, i. 73
Ethiopian, subdivisions of, i. 73
Oriental, defined, i. 75
Oriental, subdivisions of, i. 75
Australian, defined, i. 77