. The Cambridge natural history. Zoology. ^36 OPHIDIA with the exception of one species of Distira, D. semperi, which is confined to the land-locked freshwater Lake Taal at Luzon in the Philippines. They live on fish, and range from the Persian Gulf to Central America. In conformity with their absolutely aquatic life they are viviparous, and they die when kept out of the water for any length of time. About fifty species are known. JSnhydrina vcdakadien s. hengalenais has scales with a small tubercle or keel, which is stronger in the males ; the ventrals are very small, forming a scarcely enlar
. The Cambridge natural history. Zoology. ^36 OPHIDIA with the exception of one species of Distira, D. semperi, which is confined to the land-locked freshwater Lake Taal at Luzon in the Philippines. They live on fish, and range from the Persian Gulf to Central America. In conformity with their absolutely aquatic life they are viviparous, and they die when kept out of the water for any length of time. About fifty species are known. JSnhydrina vcdakadien s. hengalenais has scales with a small tubercle or keel, which is stronger in the males ; the ventrals are very small, forming a scarcely enlarged series. The maxillaries. <a^L Csp rlt ^2 Fig. 170.—Eiihyclrina ralakadien (left upper figure) and Hydrophis obscura (right lower figure), x J. caa-ry two or more small grooved teeth in addition to the poison- fangs. The back is olive or dark grey, with black transverse bands, which are most distinct in the young. The under parts are white. This species ranges from Persia to the Malay Islands. Hydrophis H. ohscwa.—The body is long ; the head and neck are very slender, the body becoming much thicker farther back. The small teeth behind the poison-fangs are not grooved. The ventral scales are very small, the others are keeled, strongly so. 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 Harmer, S. F. (Sidney Frederic), Sir, 1862- ed; Shipley, A. E. (Arthur Everett), Sir, 1861-1927. ed. [London, Macmillan and Co. , Limited; New York, The Macmillan Company
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectzoology, bookyear1895
