Two anthiine fishes from Sagami Bay are described as new: Plectranthias altipinnatus and Anthias (Mirolabrichthys) flavoguttatus. The former is closely related to Plectranthias morgansi (Smith) from Kenya, but biffers from it in having a larger number of dorsal rays, a smaller number of branched caudal rays, a lower body, smaller eyes, and small scales on the soft dorsal and anal fins basally.The latter closely resembles Anthias lori Fourmanoir et Laboute (syn. Mirolabrichthys imeldae Burgess) from New Caledonia, differing in its longer first anal spine, smaller number of pored lateral line scales and coloration.