Of all the animuls of the Stormberg Beds the Theriodonts are the most interesting, as they bear strong resemblances to mammals. Dr. Broom, of Stellenbosch, says they have practically solved the problem of the origin of mammals. Of these Theriodonts only two are said to have come from Basutoland, both of small size, viz. Galesaurus and Tritylodon. They are only known from their skulls. I have not been able to discover whether they came from Molteno Red Beds or Cave Sandstone, but I imagine most likely from the first. Tritylodon has a small and decidedly mammalian-like skull, and is said to have been found at Thaba Tsuen, a mountain 16 miles south-west of Morija. It was brought to England by Dr. Exton, Curator of the Bloemfontein Museum, and described by Sir Richard Owen at a meeting of the Geological Society in 1884. Dr. Broom, who has recently discussed the affinities of the skull, inclines to the view that it is a mammal.