A taxonomic revision of the genus Meterythrops is provided, including a redescription of M. microphthalmus and newly reported characters of M. japonicus, M. pictus, and M. robustus. Adult males of all species (excluding M. japonicus and M. megalops because no adult males of these species have been collected) have pleopods with modified setae, which are found on the fifth pleopod in M. microphthalmus and M. robustus, and on the fourth and fifth pleopods in M. pictus. Two new species, M. intermedius and M. tenuispinis, from Alaskan and East Asian waters, respectively, are also described. Males of both species also have modified setae on the fifth pleopod. Meterythrops microphthalmus and M. robustus are recorded for the first time from Alaskan waters and Japanese waters, respectively.