Explanation

The cranial capacity of Java man $(Homo\ erectus\ erectus)$ was 900 cc. The cranial capacity of Peking man $(Homo\ erectus\ pekinesis)$ was 1075 cc. The cranial capacity of Handy man $(Homo\ habilis)$ was 700 cc and the cranial capacity of Modern man$(Homo\ sapiens\ sapiens)$ is 1360 cc.