160 FOSSIL FISHES OF THE ENGLISH CHALK. 
plates seems to have been flaked away in the fossil. Twelve rays, with long 
unjointed bases and remains of closely articulated distal ends, are preserved in the 
pectoral fin (pet.). The foremost ray is especially stout, with its articular end 
projecting upwards above the others. This ray and the second bear traces of a 
tubercular ornament. 
Probably all the scales preserved belong to the lower half of the flank, but 
they are especially remarkable for their elongated shape. They are all rhombic 
in form, with a straight overlapped margin, and with the hinder border curiously 
variable, sometimes entire or produced only at the lower angle (fig. 1 f), some- 
times with from two to four denticulations (fig. 1 ¢). Their smooth enamelled 
surface is marked only by occasional fine pittings. Two or three scales exhibit a 
large median perforation for the passage of a slime-canal. 
Horizon and Locality.—Zone of Holaster subglobosus : Halling, Kent. 
2. Neorhombolepis (?) punctatus, A. 8S. Woodward. Plate XXXIV, fig. 2. 
1844. Lepidotus punctatus, lu. Agassiz, Poiss. Foss., vol. 11, pt. i, p. 306 (name only). 
1844. Lepidotus punctulatus, L. Agassiz, tom. cit., pt. 1, p. 287 (name only). 
1888. Genus non det., A. S. Woodward, Proc. Geol. Assoc., vol. x, p. 304, pl. 1, fig. 2. 
1895. Neorhombolepis (?) punctatus, A. 8S. Woodward, Catal. Foss. Fishes B. M., pt. iii, p. 357 
T'ype.—Scales from zone of Holaster subglobosus ; British Museum. 
Specific Characters.—Larger than N. eacelsus, the breadth of the exposed part 
of the largest known scale being 15 mm. External face of scales covered with 
smooth ganoine, marked with a few pittings in the posterior triangular area of 
which the centre is the apex ; hinder border not serrated or crenulated. 
Description of Specimens.—In the type specimen from Burham in the Ennis- 
killen Collection (B. M. no. P. 4705) no scale is deeper than broad, and the 
majority are much broader than deep. It is clear that the wide overlapped 
marein is straight, not produced forwards at its angles; and the very feeble 
peg-and-socket articulation is shown. The external enamel is fractured and 
not well preserved, though it exhibits the characteristic triangular area marked 
by pittings. This feature is still better seen in some well-preserved scales 
(Pl. XXXIV, figs. 2, 2) discovered by Mr. 8. J. Hawkins also at Burham. 
The form of their overlapped margin shows that these scales do not belong 
to a species of Lepidotus; but their reference to Neorhombolepis is only 
provisional. 
Horizon and Localities—Zone of Holaster subglobosus: Burham, Kent ; 
Dorking, Surrey ; Louth, Lincolnshire (Rev. C. R. Bower). 
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