1.There is only one known species of primate that still has a functioning third eyelid, and that is the Calabar angwantibo (closely related to lorises) which lives in West Africa.
半月皱襞是长耳朵上部和中部连接处一个细长瘤。
2.Any of several small, slow-moving, nocturnal prosimian primates of the genera Loris and Nycticebus of tropical Asia, having dense woolly fur, large eyes, and a vestigial tail.