398 - Mr. A. S. Woodward on some 
EXPLANATION OF PLATE XVII. 
Fig. 1. Dictyopyye (?) Draperi, sp. n.; fish wanting caudal fin.—Storm- 
berg Beds, Rouxville, Orange Free State. 
Fig. 2. Atherstonia minor, sp. v.; middle portion of trunk.—Beaufort 
Beds, Klip Fontein, S.W. of Fraserburg, Nieuwveldt Range, 
Cape Colony. 
Fig. 2a, Ditto; scales, four times nat. size. 
Fig. 3. Atherstonia Seeley, sp. n.; portion of trunk with pelvic and anal 
fins.—Ihbid. 
Fig. 8a. Ditto ; natural impression of scales, four times nat. size. 
Fig. 4. Undetermined Paleoniscid fish ; caudal region.—Molteno Beds, 
Biggarsberg, Natal. 
[Unless otherwise stated the figures are of the natural size. } 
LVILI.—On some British Upper-Jurassic Fish-remains, of 
the Genera Caturus, Gyrodus, and Notidanus. By A. 
Smita Woopwarp, F.L.8. 
[Plate XVIII. } 
THERE are still numerous British fossil fish-remains, named 
or briefly noticed by Agassiz, awaiting some definite descrip- 
tion; and the first two of the following notes relate to Upper- 
Jurassic species unsatisfactorily treated in the ‘ Poissons 
Fossiles.’ The third note refers to a very rare form of 
Selachian tooth from the Oxford Clay ; and each of the species 
described is as yet known from such imperfect materials, that 
the brief review of the subject below may call attention to 
the deficiency and lead to the discovery of other specimens. 
1. Caturus angustus, Agassiz. (Pl. XVIII. fig. 1.) 
1844. Caturus angustus, L. Agassiz, Poiss. Foss. vol. 11. pt. ii. p. 118. 
Among the numerous species of Upper-Jurassic fishes 
noticed by Agassiz under names with inadequate description 
is a form of Caturus trom the Portland Oolite of Garsington 
Hill, near Oxtord. It is named Caturus angustus, and dis- 
missed with the briet diagnosis :—“ Mspéce tres-allongée, 
remarquable par le développement excessit des fulcres du 
lobe supérieur de la caudale. Du portlandien de Garsington 
pres d’Oxtord.”” No information is afforded as to the owner 
of the original specimen or the museum in which it was pre- 
served; and it is thus perhaps a matter ot speculation to 
identify the actual fossii on which the notice is based. So 
