pilot blacksnake黑蛇, 虎蛇(一种黑色，多为无毒蛇类，如北美黑游蛇属黑蛇和食鼠黑蛇)water moccasin噬鱼蛇(一种有毒水蛇)dimondback rattlesnake菱背响尾蛇（产于美国西南部）英语解释如下 : either of two large and deadly rattlesnakes (Crotalus adamanteus of the southeastern United States and C. atrox of the south central and southwestern United States and Mexico) ? called also diamondback, diamondback rattler。
