294 
A.CTIN 0 PTEK Y GII. 
Eugnathus philpotse, Agassiz. 
[Plate Y. fig. 2.] 
1839-44. Eugnathus philpotice, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. 
p. 101, pi. lviii. 
1839-44. Eugnathus polyodon , L. Agassiz, ibid. p. 104, pi. lviii a. fig. 2. 
[Imperfect head ; Oxford Museum.] 
1844. Eugnathus opercular is, L. Agassiz, ibid. p. 104. [Fish; un¬ 
known.] 
1868. Eulepidotus sauroides, Sir P. Egerton, Quart. Journ. Geol. Soc. 
vol. xxiv. p. 603. [Nearly complete fish; British Museum.] 
1872. Heterolepidotus sauroides, Sir P. Egerton, Figs. & Descript. Brit. 
Organic Remains, dec. xiii. (Mem. Geol. Surv.), no. 3, pi. iii. 
1887. Ophiopsis sauroides, K. A. von Zittel, Handb. Palaeont. vol. iii. 
p. 217. 
1890. Eugnathus philpotce, Woodward & Sherborn, Catal. Brit. Foss. 
Vertebrata, p. 79. 
Type. Fish, wanting jaws ; Oxford Museum. 
A larger species than the type, attaining a length of about 0*7, 
and with a relatively deeper, dorsally-arched abdominal region. 
Length of head with opercular apparatus not exceeding the 
maximum depth of the trunk, and contained nearly five times in 
the total length of the fish. Head short and broad, the roof of the 
skull being less than twice as long as its width at the occiput, and 
all the external bones smooth or with few small tuberculations ; 
maxillary teeth numerous and slender, those of the premaxilla and 
dentary much larger, fewer, and more robust, but attenuated to a 
slender, more or less curved point; splenial teeth small; operculum 
as broad as deep. Fins as in the type species, but the anal 
apparently somewhat more remote. Scales relatively larger than 
in the type species, usually less conspicuously ornamented, otherwise 
similar. 
Some specimens (e. g. no. P. 2021) prove that in this species 
there are ossifications in the sheath of the notochord. 
Form, Log. Lower Lias: Dorsetshire. 
All the following specimens were obtained from the neighbour¬ 
hood of Lyme Regis :— 
P. 3577. A fine specimen, nearly complete, about 0‘7 in length. 
The long slender mandibular teeth are conspicuous. 
Enniskillen Coll. 
P. 3576. An equally large fish, more fractured and somewhat 
