ACTINOPTERYGII. 
i>60 
posterior is the larger tooth, inclined forwards, with a 
sharp edge in front and behind ; while the anterior tooth 
is rounded behind, with a sharp edge only in front. 
Between the large teeth there are also traces of small ones 
of similar form, arranged in single series on the sharp 
outer margin of the hone. One of these small teeth, 
preserved on the left premaxilla, is slightly curved in¬ 
wards in its apical portion. Bemains apparently of the 
attenuated rostral region occur above the right premaxilla. 
Gardner Coll. 
47204 h. Imperfect anterior half of a smaller left premaxilla, 
showing the base of the anterior enlarged tooth, and the 
whole of the posterior enlarged tooth, which is distinctly 
inclined forwards. Gardner Coll. 
47204 c. The greater portion of the left dentary, much crushed, and 
imperfect both behind and below, shown from the outer 
aspect of the natural size in PI. XIII. fig. 5. Pive of the 
anterior recurved teeth are indicated, gradually increasing 
in size backwards. Then follow remains of two very 
large teeth with tumid, finely striated bases, the second 
much larger than the first. The outer face of the bone, 
so far as preserved, is smooth. Gardner Coll. 
33311. Fragment of left premaxilla, with base of posterior enlarged 
tooth. Purchased.^ 1858. 
?. 9020. Anterior portion of small right premaxilla. 
Presented hy F, G. Hilton Price, Esq., 1899. 
P. 5528. Bemains of anterior half of mandible. Purchased, 1888. 
47204 e-i. Small fragments of mandible. Gardner Coll. 
P. 35. Anterior end of small left dentarv. Gardner Coll. 
Apateodus striatus, sp. nov. 
[Plate XIII. fig. 6, Plate XIY.] 
(?) 1837-44. Saurocephalus striatus, L. Agassiz, Poiss. Foss. vol. v. 
pt. i. p. 102, pi. XXV c. figs. 17-20. 
Type. Small head ; British Museum. 
An imperfectly known species, the mandible probably attaining a 
length of about 0*15. Two teeth on the anterior half of the pre¬ 
maxilla much enlarged; the anterior about two thirds as long as 
