340 
ACIINOPTBRYGII. 
about O'OT. Head much deeper in proportion to its length than 
ill the type species. 
Form. ^ Log. Turonian : S.E. England. 
38333. Fragmentary remains of small skull and mandible, showing 
delicate pterj’^goid arch and blunt mandibular teeth; 
Lower Chalk, Dover. Daniels Coll. 
?. 4510 a. Fragment of somewhat larger skull and mandible ; 
English Chalk. FnnisJcillen Coll. 
^ 
^ ‘ Genus EOMYRUS, Storms. 
[Bull. Soc. Beige Geol. vol. x. 1898, Mem. p. 239.] 
A genus founded on an imperfect cranium, which most closely^ 
resembles that of the existing Myrus, but differs from the latter in 
exhibiting a relatively larger basisphenoid and a larger anterior 
extension of the squamosal. Teeth on vomer and premaxillary 
region relatively large. 
If the second and third extinct species mentioned below are 
correctly referred to this genus, its diagnosis may be extended 
thus:—Teeth bluntly conical. Yertebrse somewhat exceeding 100 
in number. Pectoral fins small; dorsal fin arising above the 
pectoral arch and continuous with the anal round the pointed 
extremity of the tail. Scales absent. 
Eomyrus dolloi, Storms. 
1898. Eomyrus dolloi, R. Storms, Bull. Soc. Beige Geol. vol. x. Mem. 
p. 225, pi. V. figs. 8, 9, pi. vi. figs. 6-8. 
Type. Imperfect cranium ; Brussels Museum. 
The type species, known only by the cranium and detached 
vertebrae. Length of cranium 0’03, and maximum width at 
occiput 0-007. 
Form. Log. Upper Eocene (Wemmelian) : lYemmel, Brussels. 
Yot represented in the Collection. 
Eomyr-us latispinus (Agassiz). 
1835. Anguilla latispina, L. Agassiz, Neues Jahrb. p. 307 (name 
only). 
1839-44. Anguilla latispina, L. Agassiz, Poiss. Foss. vol. v. pt. i. p. 15. 
pt. ii. p. 133, pi. xliii. fig. 4. 
Type. Nearly complete fish ; Paris Museum of Natural History. 
Length of head with opercular apparatus equalling about twice 
