Two new zoogonid digenea from deep-sea fishes in the Gulf of Panama.

Panopula cavernossa gen. et. sp. n. from the intestine of the brotulid Enchelybrotula (?) paucidens differs from other members of the Steganodermatinae by having testes near the anterior of the acetabulum, a posttesticular ovary, and a postequatorial acetabulum. Two related species are transferred to the genus Brachyenteron as B. pycnorganum comb. n. and B. spinosum comb. n. Neosteganoderma gillissi sp. n. from the synaphobranchid eel Synaphobranchus bathybius differs from N. glandulosum and N. polymixiae, the most similar species, because conspicuous glandular cells envelop the esophagus and pharynx, others about the genital atrium occur in elongated sacs, epithelium is lacking at the cecal bifurcation, and the cirrus sac is straight. We establish N. infundibulum comb. n. and expand Steganodermatinae to include Brevicreadium congeri and Hudsonia agassizi.