228 
A.CT1N0PTERTGII. 
49065. Imperfect mandible, equally large, ■with part of the palato- 
pterygoid arcade; Kent. Mrs. Smith’s ColL 
49824. Imperfect left palato-pterygoid arcade, showing three teeth 
and the bases of others ; Lower Chalk, Southeram, Lewes. 
Capron Coll, 
38750. Imperfect palatine associated with anterior end of dentaries; 
Lower Chalk, Burham, Kent. Purchased^ 1862. 
43101. Fragment of palatine; Kent. Wetkerell Coll, 
The following species are unsatisfactorily defined, and are not 
represented in the Collection :— 
Cimolichthys contractus.^ F. B. Loomis, Palseontogr. vol. xlvi. 
(1900), p. 273, pi. xxvii. figs. 8, 9. Empo contractu^ 
E. D. Cope, Bull. U.S. Geol. Sarv. Territ, no. 2 (1874), 
p. 46, and Vert. Cret. Form. West (Bep. IJ.S. Geol. Surv. 
Territ. vol. ii. 1875), p. 232, pi. liii. figs. 14-17.—Upper 
Cretaceous (Niobrara Group) ; Kansas. [Palato-pterygoid 
arcadqij ^ 
Cimolichthys lisbonensis : Empo lishonensis, A. Stewart, Kansas 
U niv. Quart. [A] vol. viii. (1899), p. 111.—Ujjper Cretaceous 
(Lisbon Shales); Kansas. [Premaxilla; Kansas University 
Museum.] 
Cimolichthys merrilli, F. B. Loomis, loc. cit. 1900, p. 272, 
pi. xxvii. fig, 7. Empo merrilli, E. D. Cope, loc. cit. 1874, 
p. 46, and op. cit. 1875, p. 232, pi. liii. figs. 10-13.— 
Upper Cretaceous liS'iobrara Group) ; Kansas, [Palatine, 
&o^f^ i 
Cimolichthys semianceps, E. D. Cope, Proc. Amer. Phil. Soc. 
vol. xii. (1872), p. 351; F. B. Loomis, loc. cit. 1900, 
p. 273, pi. xxvii. figs. 4-6. Empo semianceps, E. D. Cope, 
op. cit. 1875, p. 233, pi. liii. figs. 1, 2, 6-9.—Ibid. 
[Portions of jaw^^^^ 
Numerous detached barbed teeth of Cimolichthys have been 
described as follows :— 
Spinax marghiatus, A. E. Beuss, Yerstein. bohm. Kreideform. 
pt. i. (1845), p. 8, pi. iv. figs. 10, 11. Acanthias 
marginatus, C. G. Giebel, Fauna d. Yorwelt, Fische (1848), 
p. 301. Anenchelum ? marginatum, E. Hebert, Mem. 
Soc. Geol. France, [2] vol. v. (1855), p. 350, pi. xxvii. 
fig. 4. Saurocephalus ? marginatus, H. B. Geinitz, 
