Death Burst. When the skeleton dies, each creature within 5 feet of it must make a DC 15 Dexterity saving throw, taking (3d8) acid damage on a failed save, or half as much damage on a successful one. A creature that failed the save is also covered in the acid, and takes (1d8) acid damage at the beginning of each turn. This acid can be cleaned off with an action.

Multiattack. The skeleton makes two claw attacks. 

Claw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: (1d6 + 4) slashing damage plus (2d8) acid damage.