Abstract
Lingual papillae were studied on a female kangaroo (Macropus giganteus) aged ten. 1) Papillae vallatae ; these were depressed from the surface of tongue, and the groove circumscribing each papilla assumed characteristic form in that it turned into a fine aperture about 0.3mm in diameter at the dorsal center of the papilia as if pouring out on the dorsum of tongue. They were relatively rich in taste buds. (Fig. 4) On this point they resembled in shape to those occurring in Schnabeltiere (Ornithorhynchus anatinus) as described in one of the Oppel's textbooks. 2) Papillae folliatae ; long oval in shape, they occur 7 to 8 each on one side of the tongue. They were very poorly furnished with taste buds as contrasted to the vallate papillae. 3) Papillae collicularis ; these occur on the tongue elevated like knolls having slight depression at each top. They are localized scatteringly on both lateral marsins of posterior half of the tongue. They lack taste bud, and instead, are provided with ducts of mucous glands. 4) Papillae fungiformes ; these occur at the frontal part of the tongue approximately ten in number on each side. 5) Papillae filliformes ; fine and slender in shape, they cover densely all over the dorsum of the tongue, and each papilla shows bifurcation at its free end.
