A. Restoration of the Skeleton of Pterodactylus crassirostris. (Goldfuss.)

B. Fore-foot of a Lizard. (Cuvier.)

C. Restoration of the right fore-foot, or right hand of Pterodactylus crassirostris. (Goldfuss.)

D. The right fore-foot, or hand of P. longirostris. (Cuvier and Soemmerring.)

E. The Fore-foot of P. macronyx. (Buckland, Geol. Trans. Lond. 2d Ser. Vol. 3. Pl. 27.)

F. The Hind-foot of a Lizard. (Cuvier, Oss. Foss. Vol. V. Pt. II. Pl. XVII.)

G. Right foot of P. crassirostris, as conjecturally [034] restored by Dr. Goldfuss. No authority for this seems to be afforded by the fossil specimen N.

H. Right foot P. longirostris. (Cuvier.)

I. Foot of P. macronyx. (Buckland.)

K. Hind foot of a Bat.

L. Skeleton of Dracovolans. (Carus. Comp. Anat. P. 370.) shewing the elongated bones, or false ribs, which support the inembranous expansion of its Parachute.

M. Skeleton of a Bat. (Cheselden.)

N. Skeleton of P. crassirostris, in the Museum at Bonn, in Solenhofen slate. (Goldfuss.)

O. Skeleton of P. brevirostris, from near Aichstadt, in the same slate. (Goldfuss.)

P. Imaginary restoration of Pterodactyles, with a cotemporary Libellula, arid Cycadites.