Fig. 1.—Xenopus lævis and Rana fuscigula.
2. Make an enlarged drawing, about twice the natural size, showing:—
(a) The fore-limb with the digits.
(b) The hind-limb with the digits. The inner three digits have claws. [The claws are absent in the Frog.]
Name the parts of these limbs, and number the digits from within outwards, noting that the first is absent in the fore-limb.
Mouth Cavity.
Open the mouth cavity widely, and make a sketch showing:—
(a) The teeth on the upper jaw.
(b) There are no teeth on the vomer. [In the Frog each vomer is supplied with teeth.]