Diameter of body 40µ; length of pseudopodia 120 to 140µ.


[Illustration: Fig. 5.--_Actinophrys sol_.]



Genus HETEROPHRYS Archer.

The body is globular with but slight differentiation into ectoplasm
and endoplasm; one nucleus in the latter; contractile vacuoles
one or many; pseudopodia on all sides, thin, and with peripheral
granule-streaming; surrounded by a globular, rather thick coat of
jelly, which is hyaline inside and granular on the periphery. Fresh
and salt water.


Heterophrys myriapoda Archer. Fig. 6.

Synonym: _H. marina_ Hert. & Less. '74.

Diameter 25 to 80µ; pseudopodia twice as long as the body diameter;
the plasm often contains chlorophyll bodies (Zoochlorella). The
granular part of the gelatinous layer is thick (up to 10µ). The
spine-like processes are very thin and short. (Schaudinn '95.) The
marine form found at Woods Hole probably belongs to this species,
as described by Schaudinn. The short pseudopodia which give to
the periphery a fringed appearance are quite regularly placed in
connection with the pseudopodia. The latter are not so long as twice