264 
ACTINOrTERTGII. 
P. 3953. Fragmentary mandible ; Chalk, Sussex. EnnislciUen Coll. 
49799. Fragmentary mandible about 0*12 in length ; Lower Chalk, 
Southeram, Sussex. Capron Coll. 
P. 9042. Fragment apparently of pterygoid arcade of this species, 
bearing characteristic teeth; Lower Chalk, Burham. 
Presented hy S. J. Hawhins, Esq., 1891. 
The following specimens seem to be fragments of the hinder end 
of the premaxilla of large individuals of this species, but they can 
only be provisionally determined :— 
4090. Five teeth and the base of a sixth fixed upon bone, described 
and figured by Agassiz loe. cit. as the type specimen of 
Saurocephalus striatus ; Chalk, Lewes. Mantell Coll. 
4091. Three more slender teeth in close series; Chalk, Lewes. 
Mantell Coll. 
P. 5647. Group of fragments including hinder end of very large 
premaxilla, with remains of characteristic teeth in slightly 
spaced series; probably from Lower Chalk, Cuxton. 
Harford Coll. 
33309. Smaller fragment with well-preserved teeth; Lower Chalk, 
Burham, Kent. Purchased, 1858. 
47924. Fragment with teeth of unequal size; Lower Chalk, near 
Maidstone. Presented hy the Hon. Pobert Mar sham, 1877. 
Apateodus lanceolatus, sp. nov. 
[Plate XIII. fig. 7.] 
Type. Anterior portion of premaxilla; British Museum. 
A species smaller than the type form. Anterior part of pre¬ 
maxilla comparatively short, with two much enlarged, long and 
slender, lanceolate teeth, which are inclined slightly forwards ; 
these teeth about equal in size, or the anterior slightly the larger, 
and the interspace between them much less than their height. 
Form. ^ Log. Turonian : Kent. 
39080. The type specimen, being the anterior portion of a right 
premaxilla, exposed from the outer aspect and shown of 
the natural size in PI. XIII. fig. 7; Grey Chalk, Dover. 
The anterior extremity of the bone is broken away, but 
the two characteristic enlarged teeth are well preserved. 
