. MUPv^NID^. 
ej4 
O 
o 
tooth, near the symphysial end of the dentary, is rather 
large and sharply conical. An undetermined fragment 
of the upper jaw (x.) is preserved. Purchased, 
28859, 36118, 38132, 38897-98, 40521. Imperfect pyritised skulls, 
partly of this, partly probably of the larger species ; 
Sheppey. 
R ' hynchorhifms major, sp. nov. 
Purchased. 1854-6“ 
Tijpe. Imperfect head; British Museum. 
About twice as large as the type species. Coronoid region of 
mandible about one third as long as the dentary border; teeth 
very stout and bluntly conical. 
Foi'm. 4' Loc. Lower Eocene : London Basin. 
P. 1746 a. Type specimen, in nodule with pyrites; London Clay, 
Sheppey. The supraoccipital forms a conspicuous crest. 
The squamosals are remarkably attenuated and produced 
forwards. The pterygoid arcade is shown to be moder¬ 
ately robust, with a cluster of bluntly conical teeth. 
Similar teeth are seen in the mandible, which, on the 
right side, exhibits the relatively short coronoid region 
noted in the specific diagnosis. Egerton CoU. 
P. 1746 h. More imperfect larger head ; Sheppey. The very small 
triangular operculum is shown, with remains of about 
12 pairs of branchiostegal rays. Egerton CoU. 
P. 1745-46. More imperfect specimens, one exhibiting associated 
vertebrae; Sheppey. Egerton CoV, 
Genus PARANGUILLA, Bleeker. 
[Atlas Ichthyol. vol. iv. 1864, pp. 5, 8.] 
Syn. Enchetgopus, L. Agassiz (gion Bloch & Schneider, 1801), Poiss. 
Foss. vol. V. 1844, pt. i. p. 16, pt. ii. p. 137. 
An eel generally resembling the species from Monte Bolca above 
provisionally referred to Eomyrus, but distinguished by its more 
delicate skeleton and smaller head. 
ParangTiilla ti^Hna (Agassiz). 
1796. Ophidium barbatum, G. S. Volta, Ittiolit. Veronese, p. clvii, 
pi. xxxviii. fig. (ejTore). ^9^ 
1835. EnchelyopAis ti^rinus, L. Agassiz, Neiies Jahib. p. (naire 
only). (' /w-Kw ) 
