flagella of, [114]

Pytheas, [223]

Pythonaster, [464]

Pythonasteridae, [464]

Pyxicola, [138], [158]

Quadrula, [52];

Q. symmetrica, [55];

test of, [54]

Quartan fever, a parasitic disease, [104] f.

Quartzites, Radiolarian, [87]