In the Geological Magazine for 1884 some Mesozoic fossils, obtained from near Mount Hamilton and the Peak Station, were noticed by me with figures and descriptions where the specimens were fairly well preserved. Since then additional specimens have been procured from adjoining districts. The general character of the facies is fairly similar to that already noticed in 1884; but on the whole, perhaps, the specimens are scarcely so well preserved. Since then additional specimens have been procured from adjoining districts. The general character of the facies is fairly similar to that already noticed in 1884; but on the whole, perhaps, the specimens are scarcely so well preserved. According to the opinion of those who have had most experience, these fossils may be regarded as of “Cretaceo-Jurassic” age, though I am not aware tliat such undoubted Cretaceous forms as Ancyloceras, etc., have been discovered in the beds whence the fossils forming the subject of these notes have been derived.