MTJRjENID^. 
341 
the rnaxiniuni depth of the trunk and contained six times in the 
total length to the base of the caudal fin. Caudal region twice as 
long as the abdominal region. Anterior neural spines in form of 
Tery broad laminae. 
This species is described by Agassiz as most closely related to the 
existing Myrus vulgaris, Kaup {Murmna myrus, Linn.), of the 
Mediterranean. 
Form. 4* Loc. Upper Eocene: X. Italy. 
P.9427. Imperfect specimen wanting extremity of tail; Monte 
Bolca, near Yerona. The maximum width of the cranium 
is shown to equal one third of its length, and the slightly 
expanded end of the slender rostrum is less elongated 
than in E. dolloi. The teeth, so far as preserved, are 
very stout and bluntly conical. The maxillae are robust. 
The branchiostegal rays are not less than 15 in number, 
and do not curve upwards at their hinder end. The 
neural canal of the vertebral axis is seen to be very 
laj.g 0 ^ History unJcnoum. 
P. 8655. Fine specimen 0*3 in length ; Monte Bolca. The head is 
more imperfect than in the previous specimen, but similar 
branchiostegal rays are preserved. Bemains of one of the 
small pectoral fins occur ; and the dorsal fin is observed 
to arise directly above this fin. The hinder halt of the 
caudal region is disturbed bj' an oblique fracture. 
Purchased, 1897. 
P. 1889, P. 3875. Small specimen in counterpart, bent and broken 
at the hinder end of the abdominal region ; Monte Bolca. 
Egerton 4’ Ennishillen Colls. 
^ ^ Eq^iI^us ventralis (Agassiz). 
1835. Anguilla^ntralis, L. Agassiz, iSeues Jahrb. p. 307 (name 
only). 
1839-44. Anguilla ventralis, L. Agassiz, Poiss. Foss. vol. v. pt. i. p. 15, 
pt. ii. p. 134, pi. xliii. figs. 2, 3. 
1898. Anguilla ventralis (? =Eomyrus), K. Storms, Bull. See. Beige 
Geol. vol. x. Mem. p. 240. 
Type. Nearly complete fish : olim Hartmann Collection. 
A comparatively small and slender species, the length of the head 
with opercular apparatus contained eight times in the total length 
to the base of the caudal fin. 
Form. 4' Loc. Upper Eocene : Monte Bolca, N. Italy. 
Not represented in the Collection. 
