. Sea-shore life; the invertebrates of the New York coast. Marine animals. 52 SEA-SHORE LIFE garis which is found from North Carolina to Labrador, but is com- mon only north of Cape Cod. In this starfish the arms are more pointed than in A. forbesii, the skin is not so rigid, and the madre- poric plate is of the same color as back of the animal, -which may be. Fig-. ?S; Left: HOUSESHOE CKAB. Right: COMMON STARFISH. Below: GREEN SEA-DRCHIN. purple, yellow, brown or beautiful shades of pink or red. It ranges from low tide level to a depth of 1200 feet. JIany naturalists con- sider these two form
. Sea-shore life; the invertebrates of the New York coast. Marine animals. 52 SEA-SHORE LIFE garis which is found from North Carolina to Labrador, but is com- mon only north of Cape Cod. In this starfish the arms are more pointed than in A. forbesii, the skin is not so rigid, and the madre- poric plate is of the same color as back of the animal, -which may be. Fig-. ?S; Left: HOUSESHOE CKAB. Right: COMMON STARFISH. Below: GREEN SEA-DRCHIN. purple, yellow, brown or beautiful shades of pink or red. It ranges from low tide level to a depth of 1200 feet. JIany naturalists con- sider these two forms to be identical, but the writer found that in Asterias fui-hesii from Long Island vSound, 78 individuals in 10,000 had more or less than five arms, whereas in A. vulgaris from Mas- sachusetts Bay only 23 in 10,000 had more or less than five arms. It seems, therefore, that the southern form is more than three times as variable as the northern. There is a minute red eye-spot at the tip of each arm of the starfish. Hundreds of sucker-like tube-feet arise from a deep groove that extends down the mid ventral side of each arm, and between two of the arms on the upper side of the disk one may see a bright colored area called the madreporic plate. Its situation marks the sieve-like entrance to the water tubes of the 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 Mayor, Alfred Goldsborough, 1868-1922. New York, A. S. Barnes
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