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Causus bilineatus
''Causus bilineatus'' is a venomous viper species endemic to south central Africa.〔 No subspecies are currently recognized. Common names include lined night adder〔Mallow D, Ludwig D, Nilson G. 2003. ''True Vipers: Natural History and Toxinology of Old World Vipers''. Krieger Publishing Company. Malabar, Florida. 359 pp. ISBN 0-89464-877-2.〕 and two-striped night adder.〔Spawls S, Branch B. 1995. ''The Dangerous Snakes of Africa''. Ralph Curtis Books. Dubai: Oriental Press. 192 pp. ISBN 0-88359-029-8.〕''
==Description==
The average total length (body + tail) is 30-50 cm (about 12-20 inches) with a reported maximum of .〔
The head is slightly distinct from the neck, while the snout is fairly long and tapering. Midbody there are 15-18 rows of dorsal scales that are weakly keeled and have a soft and velvety appearance. The ventral scales number 122-141 in males and 128-144 in females. There are 18-30 subcaudals.〔
The color pattern consists of an ash to auburn to brown ground color, overlaid with numerous irregular or vaguely rectangular black dorsal patches. These patches lie within two distinct and narrow pale stripes that run the length of the body. The belly color is dark to dark cream.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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