CHIEOCENTEID^. 
113 
The following species, not represented in the Collection, are 
described on the evidence of fragments :— 
Saurodon affinis^ Y. Kiprijanoff, Bull. Soc. Imp. Xat. Moscou, 
vol. xxxiii. (1860), pt. ii. p. 47, pi. i. fig. 1.—^Seocomian ; 
Kursk, Eussia. [Teeth.] 
Saurodon hroadheadiy A. Stewart, Kansas Ilniv. 'Quart. [A] 
vol. vii. (1898), p. 178. Daptinus hroadheadiy A. Stewart, 
ibid. p. 24, pi. ii. fig. 1. Saurocephalus hroadheadiy F. B. 
Loomis, Paleeontogr. vol. xlvi. (1900), p. 252, pi. xxiv. 
fig. 6, pi. XXV. fig. 1. — Upper Cretaceous; Kansas. 
[Maxilla ; Kansas University Museum.] 
Saurodon ferox, X. Stewart, loc. cit. 1898, p. 183, pi. xv., 
pi. xvi. figs. 1-3.—Ibid. [Jaws, Ac. ; Kansas University 
Museum.] 
Saurodon pygmcBus^ F. B. Loomis, Palaeontogr. vol. xlvi. (1900), 
p. 248, pi. xxiii. fig. 10.—Ibid. [Mandibular ramus ; 
Palaeontological Museum, Munich.] 
Saurodon xipjiirostrisy A. Stewart, loc. cit. 1898, p. 178, pi. xiv.— 
Ibid, [Skull, &c. ; Kansas University Museum.] 
A tooth, not of this genus, from the Eocene of Kressenberg, 
Bavaria, is named Saurodon conoideus by K. E. Schafhautl, Siid- 
Bayerns Leth. Geogn. (1863), p. 247, pi. Ixiv. fig. 10. 
Genus SAUROCEPHALUS, Harlan. 
[Journ. Acad. Kat. Sci. Philad. vol. iii. 1824, p. 337.] 
Teeth hollow, in deep sockets, compressed to a sharp edge in 
front and behind ; those of the maxilla, as also those of the dentary, 
almost uniform, only slightly increasing in size backwards, and 
those of the premaxilla not much enlarged. Successional teeth 
•formed on the inner side of functional teeth; and a series of nutri¬ 
tive foramina on the inner face of the jaw below the alveolar 
border. A small toothless presymphysial bone in the mandible. 
Vertebrae as in Ichthyodectes and Ghirocenirites. 
The presymphysial bone occurs in position in the type specimen 
of S. dentatus. 
SaTirocephalus lanciformis, Harlan. 
1824. Saurocephalus lanciformis, E. Harlan, Journ. Acad. Kat. Sci. 
Philad. vol. iii. p. 337, pi. xii. 
1830. Saurodon lanciformis, I. Hays, Trans. Amer. Phil. Soc. n. s. 
vol. iii. p. 476, pi. xvi. fig. 11. 
1841. Saurocephalus lanciformis, E. Owen, Odontogr. p. 130, pi. Iv. 
PART IV. I 
