OSTEOGLOSSID^. 
73 
ontogr. voL xlvi. (1900), p. 257, pi. xxvi. figs. 5, 6.— 
Upper Cretaceous; Kansas. [Mandible.] 
Anogmius favirostris, E. D. Cope, loc. cit. 1878, p. 178.—Ibid. 
[Skull.] 
The fragments of dentition catalogued below may perhaps belong 
to some unknown Cretaceous genus of Albulidse, but their relation¬ 
ships are uncertain. Similar specimens have be^descri,^e^ 
the names of Glossodu/ liedceli., 0. G. Costa, Atti * AccadVr onian.' 
vol. viii. (1864), p. 109, pi. ix. figs. 12, 13 (Upper Cretaceous ; 
Pietraroja, Prov. Benevento, Italy) ; Egertonia gaultina, J. Cornuel, 
Bull. Soc, Geol. Prance [3] vol. v. (1877), p. 620, pi. xi. figs. 31, 
32 (Gault; Moutier-en-Uer, Haute Marne); and Pisodusfoucardi, 
H. E. Sauvage, Bull. Soc. Sci. Hat. Yonne, vol. xxxiii. pt. ii. (1879), 
p. 50, pi. i. fig. 2 (Cenomanian ; Bassou, Yonne). 
47207. A convex, oval mass of well-worn teeth, without the support¬ 
ing bone; Gault, Eolkestone. 
Gardner Coll. 
4728^ Two more irregular fragments of similar dentition, one 
convex, the other concave, both showing the small piles 
'P S05^^ of successional teeth; Gault, Eolkestone. Gw^^0r'Gdll. 
37239. Convex group of well-worn smaller teeth ; Chalk Marl, 
Dover. Purchased^ 1863. 
P. 6107, P. 7498. Two groups of small teeth, less crowded and less 
worn ; Gault, Eolkestone. The unabraded dental crown 
exhibits a slight median apical pit, from which delicate 
strise radiate outwards. Ho successional teeth are seen. 
Purchased, 1889,1895. 
P. 9159. Similar group of small teeth ; Gault, Eolkestone. 
Purchased. 
Family OSTEOGLOSSID^. 
Trunk irregularly fusiform or elongated. External head-bones 
much thickened, and cheek covered by robust plates; supraoccipital 
bone not prominent, and parietals meeting in the middle line; no 
basicranial canal; snout not produced. Mandibular suspensorium 
nearly vertical or inclined forwards, and gape of mouth small or 
moderately wide; premaxilla much extended along the oral border, 
but maxilla also entering gape; marginal teeth with long base, in 
very shallow sockets and anchylosed with the jaw, usually in a 
