Two species of Caligus were found parasitic on the body surface and gill cavities of the silver pomfret, Pampus argenteus (Euphrasen), taken from the Strait of Taiwan. They are: C. multispinosus Shen, 1957 and C. pampin. sp. The new species is unique for the Caligus in having the two tines of the sternal furca attached to each other. Other characteristic features are: (1) middle 2 of the 4 terminal elements on the exopod of leg 1 with accessory process, (2) proximal outer spine on the terminal segment of exopod of leg 2 located subterminally, and (3) 2-segmented exopod of leg 4 with an armature formula of I-0; Ⅲ.