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In the first variety the transverse stri� disappear and the sarcolemma appears filled with finely granular matter.

By this time the parasite has greatly distended the muscle-fibre in which it has hitherto lain, absorbing, with its growth, practically all the contractile-substance, until it is surrounded only by the sarcolemma and sarcoplasm.

At each end the cell tapers to a point from which the sarcolemma appears to continue as a fine thread, and this, by attaching itself to the inclosing sheath, holds the cell in place.

She has muscles, not flabby, slender ribbons of empty sarcolemma.

Each fiber is enclosed within a delicate, transparent sheath, known as the sarcolemma.