Anomalopus mackayi, commonly known as the five-clawed worm skink, the long-legged worm skink, and Mackay's burrowing skink, is a species of smooth-scaled burrowing skink, a lizard in the subfamily Sphenomorphinae of the family Scincidae. The species is endemic to eastern Australia.
The specific name, mackayi, is in honor of Australian herpetologist .
Anomalopus mackayi generally burrows in areas with black soil and few trees.
Anomalopus mackayi usually grows to a snout-to-vent length (SVL) of about . A. mackayi is similar to A. leuckartii but with distinctly didactyle (having two digits) hindlimbs, a central dark spot within each individual scale, and is yellow-green below with darker flecks (Cogger 2000).
Adult females of Anomalopus mackayi give birth to live young by ovoviviparity.
Anomalopus mackayi is listed as "Least Concern" under the 2018 IUCN Red List, and as "Endangered" under Queensland's Nature Conservation Act 1992.