CHIROCENTRIDiE. 
113 
The following species, not represented in the Collection, are 
described on the evidence of fragments : — 
Saurodon atfinis, V. Kiprijanoff, Bull. Soc. Imp. Nat. Moscou, 
vol. xxxiii. (I860), pt. ii. p. 47, pi. i. fig. l.—Neocomian ; 
Kursk, Russia. [Teeth.] 
Saurodon broadheadi, A. Stewart, Kansas Univ. Quart.. [A] 
vol. yii. ( 1898), p. 178. Daptinus broadheadi , A. Stewart, 
ibtd. p. 24, pi. ii. fig. 1. Saurocephalus broadheadi , F. B. 
Loomis, Palaeontogr. vol. xlvi. (1900), p. 252, pi. xxiv. 
fig. 6, pi. xxv. fig. 1. — Upper Cretaceous; Kansas. 
[Maxilla ; Kansas University Museum.] 
Saurodon ferox, A. Stewart, loc. cit. 1898, p. 183, pi. xv 
pi. xvi. figs. 1-3. — Ibid. [Jaws, Ac. ; Kansas University 
Museum.] 
Saurodon pyymaeus, F. B. Loomis, Palaeontogr. vol. xlvi. (1900), 
p. 248, pi. xxiii. fig. 10. — Ibid. [Mandibular ramus ; 
Palaeontological Museum, Munich.] 
Saurodon xiphirostris, A. Stewart, loc. cit. 1898, p. 178, pi. xiv. — 
Ibid. [Skull, &e. ; Kansas University' Museum.] 
A tooth, not of this genus, from the Eocene of Kressenberg, 
Bavaria, is named Saurodon conoicleus by K. E. Schafhiiutl, Siid- 
Bayerns Leth. Geogn. (1863), p. 247, pi. lxiv. fig. 10. 
Genus SAUROCEPHALUS, Harlan. 
[Journ. Acad. Nat. 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 sizo backwards, and 
those of the prcmaxilla 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 tho mandible. 
Vertebrae as in Ichthyodectes and Chirocentrites. 
The prosymphysial bone occurs in position in the type specimen 
of S. dentatus. 
Saurocephalus lanciformis, Harlan. 
1824. Saurocephalus lanciformis, R. Ilarlan, Journ. Acad. Nat. 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. tig. 11. 
1841. Saurocephalus lanciformis, R. Owen, Odontogr. p. 130, pi. lv. 
part IV. t 
