DINOSATTRIA 367 DIOCLETIAN an ostrich of moderate size ; D. dromioides 5 feet, or that of the emu; and D. didi- formis 4 feet, or between the cassowary and the dodo. DINOSAUBIA, a tribe or sub-order of reptiles established by Herman von Meyer in 1832, and subsequently called jy him Pachypodes, or Pachypoda. In 1841 Professor Owen gave them the name which they still retain, Dinosauria. Hux- ley places them as one of two sub-orders under his order Oi'nithoscelida, and thus defines them: Cervical vertebrae short, femur as long as or longer than the tibia. Huxley divides them into three families : the Megalosauridse, the Sceiidosauridse, and the Iguanodontidse. Ohio Valley and the erection of forts to secure the W. frontier against the French. He was one of the most earnest supporters of the French and Indian War, which began about 1753 and lasted 10 years. He died in Clifton, England, Aug. 1, 1770. DIOCESE, the territorial district or portion of the Church forming the spiritual jurisdiction of a bishop. Even as early as the New Testament history we find some plain indications of the rise of the diocesan system, in the cases respectively of James, Bishop of Jerusa- lem; Timothy, Bishop of Ephesus; Titus, of Crete; to whom may be added the angels or bishops of the Seven Churches DINOSAUR DINOTHERIUM, or DINOTHERE, a genus of fossil mammals belonging to the order Proboscidea (Kaup, Huxley, and others), or to the order Cetacea, and the sub-order Sirenia (Blainville, Pictet, Carpenter, Dallas, and others) , The D. giganteum, of which the entire skull and lower jaws were found in Miocene sand at Eppelsheim on the Rhine by Klip- stein, and were described by Kaup, was apparently larger than the elephant. Its tusks, which projected from the lower jaw, curved downward, and were used by the animal, which was semi-aquatic, to support its head on the shore. It is believed that it had a short, flexible trunk. DINWIDDIE, ROBERT, a British official and ieutenant-governor of Vir- ginia in 1752-1758; born in Scotland, about 1690. During his official career he recommended the annexation of the in Asia. The name of diocese was not given till the beginning of the 4th cen- tury. Previous to that period they were denominated parochia. DIOCLETIAN C. VALERIUS DIO- CLETIANUS (surnamed Jovius), a man of mean birth, a native of Dalmatia, proclaimed Emperor of Rome by the army in 284 A D. He defeated Carinus in Moesia (286), conquered the Al- lemanni, and was generally beloved for the goodness of his disposition; but was compelled by the dangers threatening Rome to share the government with M. Aurelius Valerius Maximian. In 292 C. Galerius and Constantius Chlorus were also raised to a share in the empire, which was thus divided into four parts. Diocletian administered Thrace, Egypt, Syria, and Asia. As the result of his reconstitution of the empire the barbari- ans were driven back from all the
