. Cassell's natural history. Animals; Animal behavior. NATURAL HISTORY. XXIX.—Heteroi)hriis''' has an external villose or velvety layer of sarcode. XXX. Eaphidio2jhnjsf is an Actinopliryn with a thick external layer of delicate sarcode, which is full of minute silicious(l) spicules, and extends for some way along the pseudopods. XXXl. — Vanipyrel/a,X an animalcule not yet well understood; by some regarded as an Actiuophrys, ca])able of Amceban variations of form, and making linger-like, lobate, and wave-like expansions of its sarcode. The presence of a nucleus is doubtful ; and one marine form
. Cassell's natural history. Animals; Animal behavior. NATURAL HISTORY. XXIX.—Heteroi)hriis''' has an external villose or velvety layer of sarcode. XXX. Eaphidio2jhnjsf is an Actinopliryn with a thick external layer of delicate sarcode, which is full of minute silicious(l) spicules, and extends for some way along the pseudopods. XXXl. — Vanipyrel/a,X an animalcule not yet well understood; by some regarded as an Actiuophrys, ca])able of Amceban variations of form, and making linger-like, lobate, and wave-like expansions of its sarcode. The presence of a nucleus is doubtful ; and one marine form, having no nucleus, is placed by Haeckel among his Monera. The fresh-water Vampyrella feeds on the cells of the little Alga called Spirogyra. Creeping on a filament, it perforates cell after cell, transferring the contents to its own interior. The marine Vampyrella, in like manner, feeds on the Gomj^honema. XXXII.—Diplophrys^ is very minute, associated in groups while young, but isolated when full grown; it then has a delicate envelope which permits of the extrusion of only two tufts of attenuated pseudopods. XXXIII.—ActinospJueriumW is lai-ger than the Sun- animalcule, sometimes 0'4 millimetre in diameter; it looks much like it, and its habits are very similar, but it is rarer, and the outer or clear vesicular portion is very distinct from the interior clouded, though still vesicular mass. The pseudopods are more distinctly strengthened by a stiffer internal axis than in Actino- )>hi-ys : and yet the pseudopods can be retracted; and sometimes they wholly disappear. XXXIV.—Acantlwcystia*^ is like Actinophrys ; but it has in some cases an external coat of delicate protoplasm, full of exceedingly fine spicules (as in Raphidiophrys); and also, besides thin pseudopods all over the surface, it has numerous long silicious spi- cules or rays, often forked at the end, standing out ,'i. II-'''' "iiiii"i M Tu !''llti'u"t'ii. i"'l''i,!"uim.'&qu
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