a small insectivorous animal, probably most nearly related to the existing _Myrmecobius_. LITERATURE. The following list comprises a few of the more important sources of information as to the Triassic strata and their fossil contents:-- (1) 'Geology of Oxford and the Valley of the Thames.' Phillips. (2) 'Memoirs of the Geological Survey of Great Britain and Ireland.' (3) 'Report on the Geology of Londonderry,' &c. Portlock. (4) "On the Zone of Avicula contorta," &c.--'Quart. Journ. Geol. Soc.,' vol. xvi., 1860. Dr Thomas Wright. (5) "On the Zones of the Lower Lias and the Avicula contorta Zone"--'Quart. Journ. Geol. Soc.,' vol. xvii., 1861. Charles Moore. (6) "On Abnormal Conditions of Secondary Deposits," &c.--'Quart. Journ. Geol. Soc.,' vol. xxiii., 1876-77. Charles Moore. (7) 'Geognostische Beschreibung des Bayerischen Alpengebirges.' Gümbel. (8) 'Lethæa Rossica.' Pander. (9) 'Lethæa Geognostica.' Bronn. (10) 'Petrefacta Germaniæ.' Goldfuss. (11) 'Petrefaktenkunde.' Quenstedt. (12) 'Monograph of the Fossil Estheriæ' (Palæontographical Society). Rupert Jones. (13) "Fossil Remains of Three Distinct Saurian Animals, recently discovered in the Magnesian Conglomerate near Bristol"--'Trans. Geol. Soc.,' ser. 2, vol. v., 1840. Riley and Stutchbury. (14) 'Die Saurier des Muschekalkes.' Von Meyer. (15) 'Beiträge zur Palæontologie Württembergs.' Von Meyer and Plieninger. (16) 'Manual of Palæontology.' Owen. (17) 'Odontography:' Owen. (18) 'Report on Fossil Reptiles' (British Association, 1841). Owen. (19) "On Dicynodon"--'Trans. Geol. Soc.,' vol. iii., 1845. Owen. (20) 'Descriptive Catalogue of Fossil Reptilia and Fishes in the Museum of the Royal College of Surgeons, England.' Owen. (21) "On Species of Labyrinthodon from Warwickshire"--'Trans. Geol. Soc.,' ser. 2, vol. vi. Owen. (22) "On a Carnivorous Reptile" (Cynodraco major), &c.--'Quart. Journ. Geol. Soc.,' vol. xxxii., 1876. Owen. (23) "On Evidences of Theriodonts in Permian Deposits," &c.--'Quart. Journ. Geol. Soc.,' vol. xxxii., 1876. Owen. (24) "On the Stagonolepis Robertsoni," &c.--'Quart. Journ. Geol. Soc.,' vol. xv., 1859. Huxley. (25) "On a New Specimen of Telerpeton Elginense"--'Quart. Journ. Geol. Soc.,' vol. xxiii., 1866. Huxley. (26) "On Hyperodapedon"--'Quart. Journ. Geol. Soc.,' vol. xxv., 1869. Huxley. (27) "On the Affinities between the Deinosaurian Reptiles and Birds"--'Quart. Journ. Geol. Soc.,' vol. xxvi., 1870. Huxley. (28) "On the Classification of the Deinosauria," &c.--'Quart. Journ. Geol. Soc.,' vol. xxvi., 1870. Huxley. (29) "Palæontologica Indica"--'Memoirs of the Geol. Survey of India.' (30) "On the Geological Position and Geographical Distribution of the Dolomitic Conglomerate of the Bristol Area"--'Quart. Journ. Geol. Soc.,' vol. xxvi., 1870. R. Etheridge, sen. (31) "Remains of Labyrinthodonta from the Keuper Sandstone of Warwick"--'Quart. Journ. Geol.