. Zoology for high schools and colleges. Zoology. DUCKBILL AND ECHIDNA. 573 in a mammary ponch, where the young hatch. The duck- bill also lays large eggs. The embryonic development is meroblastic, as in reptiles. The toothless jaws are long and narrow in the Echidna, or broad and flat in the duckbill {Ornithorhynchusparadoxus Blumenbach), where it is cov- ered by a leathery integument; the external ear is Fig. 494.—Skeleton of EcMdna hystrix,—Prom Brehm's Thierleben, In the aquatic duckbill the feet are webbed, with claws of moderate size. It is covered with a soft fur, and is about
. Zoology for high schools and colleges. Zoology. DUCKBILL AND ECHIDNA. 573 in a mammary ponch, where the young hatch. The duck- bill also lays large eggs. The embryonic development is meroblastic, as in reptiles. The toothless jaws are long and narrow in the Echidna, or broad and flat in the duckbill {Ornithorhynchusparadoxus Blumenbach), where it is cov- ered by a leathery integument; the external ear is Fig. 494.—Skeleton of EcMdna hystrix,—Prom Brehm's Thierleben, In the aquatic duckbill the feet are webbed, with claws of moderate size. It is covered with a soft fur, and is about half a metre (17-22 inches) long. Its habits are like those of a muskrat, fre- quenting rivers and pools in Australia and Van Dieman's Land, sleeping and breeding in holes extending from un- der the water up above its level into the banks, and with an outlet on shore. It lives on moUusks, worms, and water-insects. Young duckbills, five cm. long, have been found in their nests. The spiny ant-eater (Figs. 493 and 494) is represented by three species, the Echidna hystrix Cuvier, of Aus- tralia, E. Lawesii Ramsay, from Port Moresby, INew Guinea, also by a re- cently discovered form inhabiting the p,f;|-,f L~k^^^U' elevated portions of !N"orthern New mareupiai bones. Guinea, and called by Gervais Acanthoglossus Bruijnii. In these singular animals the bill is long and slender, tooth-. 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. New York, H. Holt and Company
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