The eastern mourning skink (Lissolepis coventryi), also known commonly as Coventry's spinytail skink and the swamp skink, is a species of lizard in the family Scincidae. The species is endemic to Australia.
The specific name, coventryi, is in honor of Australian herpetologist .
L. coventryi is found in the Australian states of South Australia, Victoria, and possibly New South Wales.
The preferred natural habitat of L. coventryi is freshwater wetlands such as marshes and swamps.
L. coventryi has an average snout-to-vent length (SVL) of , with a long tail, which is almost one and a half times SVL.
L. coventryi is viviparous.