Some comments on the genus Lernaeopodina Wilson, 1915 (Copepoda: Siphonostomatoida: Lernaeopodidae).

The status of Lernaeopodina Wilson, 1915 is discussed. It is considered that L. spinacis (Brian, 1908) is a species inquirenda and that the transfer of L.

Margolisius abditus n. gen., n. sP. (Copepoda: Lernaeopodidae) from gill lamellae of a remora (Remora remora) collected in the Gulf of California.

Margolisius abditus n. gen., n.

Haemobaphes disphaerocephalus, an accidental parasite of seawater pen-reared Atlantic salmon.

Gill infections by the parasitic copepod Haemobaphes disphaerocephalus (family Pennellidae) were observed on a few Atlantic salmon reared at 2 seawater netpen sites in British Columbia. This is the first report of this parasite affecting salmonids. The terminal holdfast penetrated into a branchial artery and was associated with anemia.

Redescription of, and comments on, Caligus lacustris Steenstrup et Lütken, 1861 (Copepoda, Caligidae), a parasite of freshwater fishes.

Caligus lacustris is the only freshwater species of a marine genus containing some 200 species. Although it is widespread and abundant in extensive freshwater habitats of the Old World, it has never been adequately described and accurately illustrated. This paper provides detailed description and illustrations of C.