. Elements of comparative zoology. Zoology. 228 SYSTEMATIC ZOOLOGY. solid pincing-claws. With increase in size the crab must move into a larger shell. In other Anomura the back is soft, and these 'false hermits' carry half a clam-shell about with them to cover their weak point. Only a few of the true crabs or Brachyura live in fresh water. In the tropical and semi-tropical regions are. FIG. 55.—Hermit-crab (Eupagurus bernhardus) in a snail-shell. From Emerton. those which live on the land; but the great majority—a thousand different species—live in the sea. The larger species have some economi
. Elements of comparative zoology. Zoology. 228 SYSTEMATIC ZOOLOGY. solid pincing-claws. With increase in size the crab must move into a larger shell. In other Anomura the back is soft, and these 'false hermits' carry half a clam-shell about with them to cover their weak point. Only a few of the true crabs or Brachyura live in fresh water. In the tropical and semi-tropical regions are. FIG. 55.—Hermit-crab (Eupagurus bernhardus) in a snail-shell. From Emerton. those which live on the land; but the great majority—a thousand different species—live in the sea. The larger species have some economic value as food, but all of them are important as scavengers. In America 'soft-shelled crabs' are prominent in our markets at the proper season of the year. During the rest of the time this crab, known as the 'blue crab' (Neptunus hastatus), has as hard a shell as any crab, but when the proper moment comes the shell splits across the hinder margin, and out from this opening comes the body covered only with the thin- nest skin, and at this time alone it is a soft 'shell.' All. 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 Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
Size: 1485px × 1682px
Photo credit: © Paul Fearn / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
