SEMIOXOTIDiE. 
119 
P. 6363 a, 1). Two portions of dentition, many of the teeth being 
relatively small and well spaced ; Hastings. 
BecJcles Coll. 
P. 1123, P. 1125. Two waterworn portions of squamation ; Isle of 
Wight. Egerton Coll. 
P. 7419. Scales; Brook, Isle of Wight. 
Lepidotus degenhardti, Branco. 
1885. Lepidotus degenhardti , W. Branco, Jalirb. preuss. geol. Landes- 
anst. 1884, p. 183, pi. viii., pi. ix. fig. 1. 
1887. Lepidotus degenhardti, W. Branco, Ahh. geol. Specialk. Preussen 
u. Thiiring. Staaten, vol. vii. p. 330, pi. i. 
1887. Lepidotus degenhardti, var. dubia, W. Branco, ibid. p. 332, pi. ii. 
figs. 1-5. 
Type. Imperfect fish ; Geological Survey Museum, Berlin. 
A large species closely resembling L. mantelli , but apparently 
somewhat deeper in proportion to its length. Maximum width of 
operculum about two-thirds as great as its depth, and equalling 
one-half the length of the head ; frontal profile very steep, slightly 
convex. External bones more or less rugose or tuberculated. 
Inner teeth short and stout, with a smooth and slightly acuminate 
crown. Ein-fulcra very large ; pelvic fins arising midway between 
the pectorals and the anal; anal fin arising opposite a point con¬ 
siderably in advance of the hinder extremity of the dorsal. Scales 
showing a few oblique ridges beneath the enamel in their anterior 
half; principal flank-scales with two or three very large denticula- 
tions on the lower half of their posterior border; dorsal ridge-scales 
inconspicuous but acuminate. 
Form. Sf Loe. Wealden: Obernkirchen, Prussia. 
Not represented in the Collection. 
Lepidotus hauchecornei, Branco. 
1887. Lepidotus hauchecornei, W. Branco, Abh. geol. Specialk. Preussen 
u. Thiiring. Staaten, vol. vii. p. 348, pi. iv. figs. 1, 2, pi. vii. fig. 1. 
Type. Imperfect fish, wanting the greater part of the caudal 
region; Geological Survey Museum, Berlin. 
A species of moderate size, attaining a length of about 0*5. 
Trunk deeply fusiform, and head with opercular apparatus occupying 
nearly one-quarter of the total length of the fish. External bones 
ornamented with very large, closely arranged tuberculations. Ein- 
fulcra very large, but slender; pelvic fins arising midway between 
