For more than a century comparative anatomists have assigned to the 6 procumbent lower anterior teeth of Lemur catta the function of a comb for the grooming of the fur. From his studies of skeletal material the author concludes that these teeth are not structurally adapted to such a function; from his studies of the habits of lemurs in captivity and from reports of field naturalists he concludes that these teeth are not used as a comb; their function is probably the cutting of leaves and fruit.