on Malacobdella, [101] n., [119]
Kerria, [384]
Kinorhyncha, [236] f.
Kleinenberg, on Trochophore, [229]
Koellikeria, [73]
Kölliker, on Distomum okenii, [71]
Koren and Danielssen, on Gephyrea, [442], [443]
Kowalevsky, on Hirudinea, [397];
on Phoronis, [458]