602 Davis— On the Fossil Fishes of the Chalk of Mount Lebanon. 
nombre de poissons vivants, tels que les Aulopes, est une de ceux qui les distinguent 
le plus clairment et qui montrent le mieux qwils ne peuvent étre confondus avec 
aucune des genres connus.”’ 
The genus is again referred to in the second work on the Lebanon fishes by 
the same author, published in 1866, and additional characters, derived from a 
more extensive series of specimens, are described, the most important being that 
osseous scales, disposed in three rows, of which one is dorsal and the other two 
lateral, extend from the head to the tail. The dorsal series are oval, very 
granulose ; the anterior ones are largest; the lateral rows are angular and smaller. 
In the first work three species are described, of which two, viz. Eurypholis 
boissieri and E. sulcidens are combined under the former name in the second 
work. The third species, Eurypholis longidens, is described, with some doubt as 
to its identity in the first work, and confirmed in the second in 1866. The 
additional specimens, however, throw an additional light only on the construction 
of the head. The spinal column, the paired fins, and the scales are very slightly 
represented ; of the specimens figured five are of the head and one of the tail; 
the latter, probably, belongs to E. boissieri; and of the anterior portion of the 
body represented in the figs. 1-4 (Plate xvu.) only fig. 2 exhibits any portion of 
the spinal column, and that in so fragmentary a condition that the small scaly 
portions may or may not be derived either from the head or the anterior portion 
of the body. The small specimen, fig. 5, which exhibits also the anterior portion 
of the body, is seen from the ventral aspect, and does not exhibit any trace of the 
dorsal plates, so conspicuous in the specimens of E. boissieri. 
The specimens now to be described as Eurygnathus ferox possess some 
characters in common with the Eurypholis longidens of Pictet. They have, 
however, no lateral or dorsal series of scales; but the structure of the head and 
the formidable character of the teeth are very similar in the two species. It is 
possible that the two series may belong to the same species; but as I have 
had no opportunity of inspecting the types of M. Pictet, no definite opinion can be 
offered on the subject. Should it be expedient to unite them, there can be no 
doubt that it will be found necessary to remove the specimens, described by the 
learned author so often referred to, from Eurypholis to the genus now described. 
Lurygnathus ferox, Davis. 
(PI. xxxv1., figs. 1, 1a.) 
A considerable number of specimens of this ichthyolite have been discovered 
since the publication of MM. Pictet and Humbert’s classical work in 1866, and it 
is possible, in consequence, to give a more detailed description of some of the 
