. Animal Life and the World of Nature; A magazine of Natural History. Fhotograph by W. SaviUe-Keiit, FIEHASFEB. An Eel-like fish that hves as a parasite within jelly-fishes, beche-de-mer and pearl oysters. In this example the shell-fish being annoyed by the intruder has entombed it within a winding sheet of its own pearly substance. 120 Animal Life fish, the pilot acting not only as a scout to scent out provender, but also as a lure toattract larger game within striking distance of its adopted protector. The role of utilityplayed by the small crab, as also certain species of prawns that
. Animal Life and the World of Nature; A magazine of Natural History. Fhotograph by W. SaviUe-Keiit, FIEHASFEB. An Eel-like fish that hves as a parasite within jelly-fishes, beche-de-mer and pearl oysters. In this example the shell-fish being annoyed by the intruder has entombed it within a winding sheet of its own pearly substance. 120 Animal Life fish, the pilot acting not only as a scout to scent out provender, but also as a lure toattract larger game within striking distance of its adopted protector. The role of utilityplayed by the small crab, as also certain species of prawns that are commonly met withas fellow commensal guests of the big anemone, is not so obvious. It is probably thatof scavengers. In another little group of fishes, a more essentially parasitic mode of life are the Fierasfers, of somewhat eel-like shape and semi-transparent consistence,which are noteworthy for taking up their abode within the body or mantle cavities of thejelly-fish, sea-cucumber or beche-de-mer, and large bivalve molluscs. The large mother-. From a Fliotociraph hij J. Turner-Turner, reproduced in The Giant Fish of Florida (PearsonJ. GAR OR NEEDLE leap astonisliing distances in the air, especially when pursued by a King Fish. of-pearl and pearl-producing oyster of the tropical seas is not unfrequently tenanted byone of these parasitic fish, and it sometimes happens that either proving itself athorn in the flesh to its molluscan host, or dying a natural death within itsadopted domicile, the shell-fish, unable to eject the offending body, hermetically enshroudsit in a sheet of its own pearly substance. One such example that is preserved inthe collections of the Natural History Museum is represented in the accompanyingphotograph. (3^0^/////^ Mr. Saville-Kent has promised to write a third article on this subject, which wefuture number. hope to publish in some
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