50 CETACSA. 



Zeuglodon cetoides, Owen\ 



Syn. (?) Zeuglodon hydrarchus, Ca.Yus^. 



(?) Zenglodon hraehyspondylus, Miiller^, 

 Zeuglodon macrospondylus, Miiller^. 

 Basilosaurus cetoides, Leidy^. 



This is the type species. The smaller form known as Z. hydrar- 

 chus (= hraehyspondylus) is regarded by Leidy (op. cit.) and Dames® 

 as being the female of the large Z. cetoides (macrospondylus), the 

 same view being taken by Gaudry"^. 



Hah. North America. 



The following specimens helong to the large typical form. 



35590-91. A perfect and a broken anterior tooth ; from the Eocene 

 of Clarke County, Alabama, U.S.A. 



Presented hy Prof. J. W. Mallet, 1859. 



35592-95. Four imperfect cheek-teeth ; from Clarke County. 



Presented hy Prof. J. W. Mallet, 1859. 



40980. The greater portion of an anterior tooth, and an incomplete 

 cheek-tooth ; from the Eocene of Clarksville, Alabama. 



Presented hy Sir Charles Lyell, Bart., 1868. 



23628. Cast of a complete unworn cheek-tooth. The original is 

 from the Middle (?) Eocene of Claiborne, Alabama, and is 

 preserved in the Museum at Berlin. It is figured in its 

 original imperfect condition by Miiller, op. cit. pi. xii. 

 fig. 2. Purchased. 



25444. Cast of the germ of part of a cheek-tooth. The original is 



from Alabama, and is figured by Muller, ojp. cit. pi. xxiii. 

 fig. 5. Purchased. 



25445. Cast of an imperfect worn cheek-tooth. The original is from 



Alabama. Purchased. 



' Trans. Geol. Soc. ser. 2, vol. vi. p. 69 (1841). 



^ Nova Acta Ac. Cscs. Leop.-Car. vol. xxii. pt. 2, p. 373 (1847). 



^ * Foss. Eeste d. Zeuglodonten von Nordamerica,' p. 8 (1849). 



* Loc. cit. 



« Journ. Ac. Nat. Sci. Philad. ser. 2, vol. vii. p. 427 (1869). 



« Sitz. k. preusB. Ak. Wiss. 1883, vol. i. pp. 134, 135. 



^ ♦ Lea Enchainements, etc. — Mammif eres Tertiaires/ p. 39. 



