Mesnil, on Sporozoa, [94];

Caullery and, on Actinomyxidiaceae, [98] n.

Mesodinium, [137], [152]

Mesogloea, [246];

of Alcyonaria, [330]

Metabolic, metabolism, [13]

Metacnemes, [367]

Metacrinus, [588], [591]

Metallogorgia, [355]

Metamorphosis, of Insects, [44];