Two specimens of Augitite (Nos. 64613–4) in the British Museum (Natural History) were collected during the voyage of H.M.S.Challenger (1872–6) and acquired by the Museum in February, 1890, through the Director of the Challenger Office, Dr. (later Sir John) Murray. The rock was briefly described by Renard,1 who noted the fibrous texture and unusual elongation of its pyroxene, as “related to the pyroxenites”.