ty that they are so is very
great--the latter are derived from primitive Carnivora, and not, as
has been suggested, from herbivorous Ungulata. The idea that the
zeuglodonts were provided with a bony armour does not appear to be
supported by recent discoveries.

AUTHORITIES.--The above article is based on that by Sir W.H. Flower in
the 9th edition of this work. See also W.H. Flower, "On the Characters
and Divisions of the Family Delphinidae," _Proc. Zool. Soc._ (London,
1883); F.W. True, "Review of the Family Delphinidae," _Proc. U.S.
Museum_, No. 36 (1889); R. Lydekker, "Cetacean Skulls from Patagonia,"
_Palaeontol. Argentina_, vol. ii: _An. Mus. La Plata_ (1893); W.
Dames, "Uber Zeuglodonten aus Agypten," _Palaontol. Abhandlungen_,
vol. i. (1894); F.E. Beddard, _A Book of Whales_ (London, 1900); O.
Abel, "Untersuchungen uber die fossilen Platanistiden des Wiener
Beckens," _Denks. k. Akad. Wiss. Wien._, vol. lxviii. (1899); "Les
Dauphins longirostres du Bolerien," _Mem. musee d'hist. nat. belgique_
(1901 and 1902); "Die phylogenetische Entwickelung des
Cetaceengebisses und die systematische Stellung der Physeteriden,"
_Verhandl. deutsch. zool. Gesellschaft_ (1905); E. Fraas, "Neue
Zeuglodonten aus dem unteren Mittelocean vom Mokattam bei Cairo,"
_Geol. und palaontol. Abhandl._ ser. 2, vol. vi. (1904); C.W.
Andrews, "Descriptive Catalogue of the Tertiary Vertebrata of the
Fayum" (British Museum, 1906). (R. L.*)

CETHEGUS, the name of a Roman patrician family of the Cornelian gens.
Like the younger Cato its members kept up the old Roman fashion of
dispensing with the tunic and leaving the arms bare (Horace, _Ars
Poetica_, 50; Lucan, _Pharsalia_, ii. 543). Two individuals are of some
importance:--

(1) MARCUS CORNELIUS CETHEGUS, pontifex maximus and curule aedile, 213
B.C. In 211, as praetor, he had charge of Apulia; later, he was sent to
Sicily, where he proved a successful administrator. In 209 he was
censor, and in 204 consul. In 203 he was proconsul in Upper Italy,
where, in conjunction with the praetor P. Quintilius Varus, he gained a
hard-won victory over Mago, Hannibal's brother, in Insubrian territory,
and obliged him to leave Italy. He died in 196. He had a great
reputation as an orator, and is characterized by Ennius as "the
quintessence of persuasiveness" (_suadae medulla_). Horace (_Ars Poet._
50; _Epistles_, ii. 2. 117) calls him an authority on the use