Mask representing the yakka (demon) that causes the symptoms of sickness and trembling, carved Kaduru wood (Strychnos nux vomica) painted black, white, red and green: Sri Lanka, probably late 19th century

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted red with forehead details in yellow, green and red, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted yellow with details in red and green, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood and painted black, red, yellow and green, the front elaborately worked while the back is left crudely finished, representing a bloodthirsty Sanni demon that causes disease and trembling: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted red with details in black and white, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted green, red and white, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted black and red, the front elaborately worked while the back is left crudely finished, representing a bloodthirsty Sanni demon that causes illness and trembling: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted yellow with bruised and distorted features, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted green, red and white, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted black, red and white, the front elaborately worked while the back is left crudely finished, representing a bloodthirsty Sanni demon that causes disease and trembling: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted black, red and white, the front elaborately worked while the back is left crudely finished, representing a bloodthirsty Sanni demon that causes illness and trembling: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted red with details in black and white, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted yellow with details in red, the front elaborately worked while the back is left crudely finished, representing a Sanni demon and used in mask dances to avert or exorcise disease: Sri Lanka

Mask used in the Sinhalese mask play Yakun-Natanava, made of Kaduru wood painted blue, black and red, the front elaborately worked while the back is left crudely finished, representing a bloodthirsty Sanni demon, possibly Kora-Sanniya, the demon that causes paralysis and trembling: Sri Lanka