340 
ACTINOPTERYOII. 
about 0-07. Head much deeper in proportion to its length tha 
in the type species. 
Form. Loc. Turonian : S.E. England. 
36333. Fragmentary remains of small skull and mandible, she wig 
delicate pterygoid arch and blunt mandibular, tect , 
Lower Chalk, Dover. Daniels o 
P- 4510 a. Fragment of somewhat larger skull and mandible , 
English Chalk. Enniskillen Co ■ 
Genus EOMYRUS, Storms. 
[Bull. Soc. Beige Geol. vol. x. 1808, Mom. p. 239. ] 
A genus founded on an imperfect cranium, which most close.) 
resembles that of the existing Myrus, but differs from the latter 
exhibiting a relatively larger basisphenoid and a larger anteri 
extension of the squamosal. Teeth on vomer and premaxi a . 
region relatively large. r0 
If the second and third extinct species mentioned below a ^ 
correctly referred to this genus, its diagnosis may be extent® 
thus : — Teeth bluntly conical. Vertebrae somewhat exceeding 
in number. Pectoral fins small; dorsal fin arising above 
pectoral arch and continuous with the anal round the poi 
extremity of the tail. Scales absent. 
Eomyrus dolloi, Storms. 
1898. Eomyrus ilolloi , It. Storms, Bull. Soc. Beige Geol. vol. x. 
p. 225, pi. v. tigs. 8, 0, pi. vi. tigs. 6-8. 
Type. Imperfect cranium ; Brussels Museum. , 
The typo species, known only by the cranium and detac ^ 
vertebra). Length of cranium 003, and maximum wi t 
occiput 0-007. . 
Form, Loc. Upper Eocene (Wommclian) : Wemmel, Brusse 
Not represented in the Collection. 
Eomyrus latispinus (Agassiz). 
1835. Anguilla latispina, L. Agassiz, Neues Jahrb. p. 307 
only). • n 15, 
1839-44. Anguilla latispina, L. Agassiz, Poiss. Foss. vol. v. pt- *• 
pt. ii. p. 133, pi. xliii. fig. 4. 
Type. Nearly complete fish ; Paris Museum of Natural Hist^)^ 
Length of head with opercular apparatus equalling a ou 
