. Zoology. Zoology. PORTUGUESE MAN-OF-WAR. 27 shores of Key West, Florida, our hands have been severely stung by them, the burning, smarting pain lasting for hours. A Siphonophore, such as Phy- salia, for example, may be com- pared to a colony of Hydrac- tinia, in which there are nutritive and reproductive zooids and me- dusa buds. In Physalia, how- ever, there arc four kinds of zooids—, (1) locomotive, and (2) reproductive, with (3) barren medusa buds, which are called the "swimming bells," and (4) the nutritive zooids or "feeders," a set of digestive tubes which nouri
. Zoology. Zoology. PORTUGUESE MAN-OF-WAR. 27 shores of Key West, Florida, our hands have been severely stung by them, the burning, smarting pain lasting for hours. A Siphonophore, such as Phy- salia, for example, may be com- pared to a colony of Hydrac- tinia, in which there are nutritive and reproductive zooids and me- dusa buds. In Physalia, how- ever, there arc four kinds of zooids—, (1) locomotive, and (2) reproductive, with (3) barren medusa buds, which are called the "swimming bells," and (4) the nutritive zooids or "feeders," a set of digestive tubes which nourish the entire floating col- ony. The Portuguese man-of-war consists of long locomotive ten- tacles, which, when the animal is driven by its broad sail or float before the wind, stretch out in large individuals from thirty to fifty feet. These large Hydra- like zooids are arranged in small groups, arising from a hollow stem communicating with the stomach extending between the innei' and outer wall of the float. The "feeders" are of two kinds, large and small, and are clustered in branches growing from a common hollow stem, also communicating with the stomach. Glass II.—Actinozoa {Sea-Anemones and Coral Polyps). General Characters of Actinozoans.—The Actinia or sea- anemone is the type of this class, the difEerent kinds of. Fig. 2S.—Physalia. or Portuguese man-of-war. Natural 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 Packard, A. S. (Alpheus Spring), 1839-1905. N. Y. , Holt
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