On a New Species of Sivaplthecus from the Siwalik Rocks of India

A new species of Sivapithecus Pilgrim, designated as Sivapithecus lewisi, has been described. The species has been based on the study of a broken right ramus collected from the? Nagri horizon of the Siwaliks. This species is characterised by a very massive and deep mandible, exceptionally large teeth and by the presence of a better defined external cingulum in the first lower molar. The holotype is believed to be the second largest specimen of fossil an· thropoids so far reported from India, next to Sivapithecus (Dryopithecus) giganteus (Pilgrim).