A set of Reptilian remains, collected from the Airdrie upper black-band ironstones, consisting of vertebrae, ribs, and portions of two jaws, with numerous teeth some of which were broken across, and shewed a beautiful and highly complex structure. The specimens belonged partly to forms not yet identified, and partly to Anthracosaurus, a genus of Labyrinthodonts discovered in the same beds by Mr. Russell, in 1862. There was also exhibited a cast of the under surface of the skull of Anthracosaurus Russelli, Huxley, taken from the original in the Museum of Practical Geology, London, which displayed the teeth, orbits, and the other characters, by an examination of which Professor Huxley was enabled to prove its reptilian character and its affinities with other genera of Labyrinthodonts. (See Quart. Journ. Geol. Soc., Vol. XIX., page 56.) This 133-word extract was created in the absence of an abstract