. Degeneration : a chapter in Darwinism. Degeneration; Evolution. 38 DEGENERA TION. small, it is true, whilst the palps and daggers of the spider have dwindled to a beak projecting from the front of the globular unjointed body. In the other the eight legs have become mere stumps, and the body is elongated like that of a w. Fig. II. Fig. Fig. II.—Acarus equi. A degenerate Spider or mite parasitic on the skin of the hfrse. Fig. 12.—Degenerate Spider (Demodex foliculorum) found in the skin of the human face. The instances of deepeneration which we have so far examined are due to parasitism
. Degeneration : a chapter in Darwinism. Degeneration; Evolution. 38 DEGENERA TION. small, it is true, whilst the palps and daggers of the spider have dwindled to a beak projecting from the front of the globular unjointed body. In the other the eight legs have become mere stumps, and the body is elongated like that of a w. Fig. II. Fig. Fig. II.—Acarus equi. A degenerate Spider or mite parasitic on the skin of the hfrse. Fig. 12.—Degenerate Spider (Demodex foliculorum) found in the skin of the human face. The instances of deepeneration which we have so far examined are due to parasitism, except in the example of the Barnacle, where we have an in- stance of degeneration due to sessile and immobile. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lankester, E. Ray (Edwin Ray), Sir, 1847-1929. London : Macmillan and Co.
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