. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . As it stands broken, the distal extremity is almost identical with that of Hadro-saurus, and the proximal with the trochanter furnishes a very good basis for condyles like tbose, of Megalosaurus;hence the error. The relative lengths of the femur and humerus of certain genera of this order may be compared as follows:— Iguanodon anglicus,Hadrosaurus foulkei,Laelaps aquilunguis,Poecilopleurum buekiandii, Left Tibia.—The tibia is more slender than that belonging to Megalosaurus described by Prof. Owen, and thedistal articula

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. Synopsis of the extinct Batrachia, Reptilia and Aves of North America . As it stands broken, the distal extremity is almost identical with that of Hadro-saurus, and the proximal with the trochanter furnishes a very good basis for condyles like tbose, of Megalosaurus;hence the error. The relative lengths of the femur and humerus of certain genera of this order may be compared as follows:— Iguanodon anglicus,Hadrosaurus foulkei,Laelaps aquilunguis,Poecilopleurum buekiandii, Left Tibia.—The tibia is more slender than that belonging to Megalosaurus described by Prof. Owen, and thedistal articular surface, instead of being lozenge-shaped, is cuneiform, the inner wide extremity oval rounded. Innertransverse breadth of proximal head one fourth total length. Anterior crest very strong, much incurved, disappear-ing at between the proximal fifth and fourth of length; internal ridge on proximal half, strong, but not reaching ?0 Humerus. Femur. Pr oportion. 19 S3. .575 in. . 12 in. . 13 38 f■<■■//r ■/„, .//;■/y,,/,

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Keywords: ., bo, bookcentury1800, bookdecade1860, bookidsynopsisofextinc00cope