. A textbook in general zoology. Zoology. MAMMALS 317 The Ftshlike Mammals [Cetacea) The whales, dolphins, and porpoises constitute ilie order, Cetacea. They are acfiatic mammals tvith fishlike bodies. The fore limbs are paddlelike inform while the hind limbs are wanting. The snoid is very long and there is a horizontal caudal fin and often a vertical dorscd fin. The teais are two in number and posterior in positum. The skin is devoid of hair. Whales. —There are two distinct groups of whales, viz. those possessing strong functional teeth, —hence called the toothed whales; and those possessing
. A textbook in general zoology. Zoology. MAMMALS 317 The Ftshlike Mammals [Cetacea) The whales, dolphins, and porpoises constitute ilie order, Cetacea. They are acfiatic mammals tvith fishlike bodies. The fore limbs are paddlelike inform while the hind limbs are wanting. The snoid is very long and there is a horizontal caudal fin and often a vertical dorscd fin. The teais are two in number and posterior in positum. The skin is devoid of hair. Whales. —There are two distinct groups of whales, viz. those possessing strong functional teeth, —hence called the toothed whales; and those possessing no teeth in the. Fig. 209. — .Jaws of a whalebone whale, showing the baleen. adult stage, but having plates of "baleen" or "whale- bone " which take the place of teeth, —hence known as the whalebone whales (Fig. 209). The sperm whale, found largely in the southern Pacific, southern Atlantic, and Indian oceans, is an example of the toothed whales. The males are often and seventy feet long. Between 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 Herrick, Glenn W. (Glenn Washington), 1870-1965. New York, Cincinnati [etc. ] American Book Company
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