Kalmar "Genus Pseudechis" tana nufin rabe-raben haraji na macizai na dangin Elapidae, wanda ya haɗa da nau'ikan macizai masu dafin da ake samu a Australia, Papua New Guinea, da Indonesia. Sunan "Pseudechis" ya samo asali ne daga kalmomin Helenanci "pseudes," ma'anar ƙarya ko yaudara, da "echis," wanda ke nufin jinsin vipers. An fi sanin waɗannan macizai da baƙar fata ko macizai masu launin ruwan kasa, kuma an san su da dafin dafinsu da kuma cizo masu haɗari.