Lestrigonus Kinahani.
Hyperia Galba.
Hyperia oblivia. In great shoals at certain seasons. These are the only species of this family which I have ever found on the Medusæ. I consider Lestrigonus Exulans to be the male of Hyperia Galba, and L. Kinahani the male of H. oblivia.
Hyperia tauriformis. N.S.
Hyperia prehensilis. N.S.
Hyperia cyanea. N.S.
All these three new species were first taken at Banff by T. E.; the males and females of all three being procured. The males differ but little from the females, except that they are somewhat larger.
Dulichia porrecta.
Dulichia falcata.
I look upon these as being male and female of the same species.