III. The long Reptile-gallery contains mounted specimens and skeletons of Reptiles, including Crocodiles, Lizards, Snakes, and Tortoises, as well as restorations or casts of the remains of many groups now entirely extinct. The most noticeable specimen in this gallery is the model of the skeleton of the gigantic extinct North American land Reptile known as _Diplodocus carnegii_, which measures over eighty feet in length, and was presented by Mr. Andrew Carnegie in 1905. Restored models of the skeletons of the Iguanodon, a British Dinosaur, and of the North American Horned Dinosaur (_Triceratops_) are also noteworthy. [Illustration: FIG. 26.--SADDLE-BACKED TORTOISE (_Testudo abingdoni_), OF ABINGDON ISLAND, GALAPAGOS GROUP.] The Crocodiles and their extinct relatives occupy the cases on the left of the entrance from the Bird-gallery and also a stand in the middle of the gallery; and among these may be specially noticed the Indian Gharial, of which both the skeleton and skin are exhibited. The two small cases on each side of the west doorway are occupied by extinct forms and the peculiar Tuatera Lizard of New Zealand. At the south end of the east side are arranged the Turtles and Tortoises, including examples of the Giant Tortoises of the Galapagos (fig. 26) and Mascarene Islands, as well as a large species (_Testudo calcarata_) from North Africa. Opposite the Turtles and Tortoises are the Snakes, among which two large Pythons, coloured to nature, form attractive exhibits. Extinct groups occupy a small case on each side of the east door. Beyond these come the Lizards, which occupy the cases opposite the Crocodiles. The series of Old World Monitor Lizards and American Iguanas is specially noteworthy; and attention may be likewise directed to the curious worm-like Amphisbænas, of which the majority inhabit Tropical America. Casts of remains of the extinct marine Ichthyosaurs and Plesiosaurs are shown in the small cases on the sides of the doorway in the east wall. [Illustration: FIG. 27.--THE HORNED FROG (_Ceratophrys cornutus_) OF BRAZIL.] [Sidenote: Amphibians (Salamanders and Frogs).] In the Reptile-gallery is placed a large table-case containing a selection of the more important forms of Amphibians, which are divided into such as possess a tail:--Salamanders and Newts; and those without tails:--Frogs and Toads. During some period of their existence most of these animals live in the water, when they breathe by gills, and are in this respect akin to Fishes. The comparatively enormous size attained by certain tropical species of Frogs and Toads, such as the South American Horned Frog (fig. 27), should be noticed. The largest representative of the group is the Giant Salamander of Japan and China. [Illustration: FIG. 28.--A SEA-LILY, THE LARVAL STAGE OF THE ROSY FEATHER-STAR. (_Antedon rosacea_), much magnified. _a_, arms; _b_, basals; _r_, radials; _s_, stalk.] [Sidenote: Starfish Gallery.[14]]