Hypoprion, [448]

Hypoptopoma, [595]

Hypoptychus, [639]

Hypostoma—see Plecostomus

Hypostomides, [628]

Hypsocormus, [501];

H. insignis, [502]

Hyrtl, [558] n., [599] n.

Hysterocarpus, [670]

Iasis, [108];