t to Rome by
Latin plebeians, and hence she was regarded as the protectress of the
lower classes, and especially of slaves. In accordance with this, her
most important temple was that on the Aventine, the chief seat of the
plebeians, founded by Servius Tullius, originally as a sanctuary of the
Latin league (Dion. Halic. iv. 26). No man was allowed to enter the
temple, and on the day of its dedication (August 13) the slaves kept
holiday (Plutarch, _Quaest. Rom._ 100). This Diana was identified with
the sister of Apollo, and at the secular games she was worshipped simply
as Artemis. Another celebrated sanctuary of Diana was that on the slopes
of Mount Tifata near Capua (where she was worshipped under the name of
Tifatina), a sanctuary specially favoured by Sulla and Vespasian. As
Noctiluca ("giving light by night") she had a sanctuary on the Palatine
which was kept illuminated throughout the night (Varro, _L.L._ v. 68).
On the Nemi priesthood see J. G. Frazer, _Golden Bough_.

DIANA MONKEY, a West African representative of the guenon monkeys taking
its name, _Cercopithecus diana_, from the presence of a white crescent
on the forehead; another characteristic feature being the pointed white
beard. The general colour of the fur is greyish, with a deep tinge of
chestnut from the middle of the back to the root of the tail. Together
with _C. neglectus_ of East and Central Africa, _C. ignitus_ of Liberia,
and _C. roloway_ of the Gold Coast, the diana represents the special
subgenus of guenons known as _Pogonocebus_. Although the diana monkey is
commonly seen in menageries, little is known of its habits in the wild
state.

DIANE DE FRANCE (1538-1619), duchess of Montmorency and Angouleme, was
the natural daughter of Henry II. of France and a young Piedmontese,
Filippe Duc. The constable de Montmorency went so far as to assert that
of all the children of Henry II. Diane was the only one who resembled
him. Catherine de' Medici was greatly incensed at this affront, and took
her revenge by having the constable disgraced on the death of Henry II.
Brantome is loud in praise of Diane. She was a perfect horsewoman and
dancer, played several musical instruments, knew Spanish and Italian,
and "estoit tres belle de visage et de taille." Legitimated in 1547, she
was married in 1553 to Horace Farnese, second son of the duke of Parma,
but her husband was killed soon afterwards at the siege of Hesdin. In
order to assure his positio