414 
ACTINOPTERYGII. 
half times in the length from the pectoral arch to the base of the 
caudal tin. Dorsal fin-spines apparently shorter and scales re- 
latively larger than in the preceding species. Serrations of scales 
very fine. 
Form, cj" Loc. Miocene : Malta. 
P. 5310. Type specimen, described loc. cit. Purchased, 1887. 
The following extinct species is not represented in the Col- 
lection : — 
Ilolocentrum pygmexum, L. Agassiz, Poiss. Foss. vol. iv. (1835-39)) 
pp. 0, 47, 109, pi. xv. fig. 1. — Upper Eocene ; Monte 
Bolca. [Imperfect fish ; Paris Museum of Nature 
History.] 
Otoliths apparently of this family, not represented in the Collection, 
have been described as follows : — 
Otolithus ( Hoplostethus ) ingens, E. Koken, Zeitschr. deutsch. geol. 
Ges. vol. xliii. (1891), p. 117. 0. (Apogonidarum) 
ingens, E. Koken, loc. cit. vol. xxxvi. (1884), P- 55 ) 
pi. xii. figs. 1-3. — Lower Oligocene; Lattorf and Eg 0 '”' 
Ololithus ( Hoplostethus ) laciniatus, E. Koken, loc. cit . lb > 
p. 117, fig. 10. 0. ( Apogonidarum ) laciniatus, E. Koken, 
Abh. phys. Cl. k. Ges. Wiss. Gottingen, vol. xsxii. (1885), 
p. 115, pi. v. fig. 26. — Lower Eocene ; Copenhagen. __ 
Ololithus (Hoplostethus) lawleyi, E. Koken, loc. cit. 1891, p- H ’ 
pi. ix. fig. 2. — Pliocene ; Orciano, Tuscany. 
Otolithus (Hoplostethus) nettelbladti, E. Koken, loc. cit. 189 , 
p. 116, pi. ix. fig. 6. — Upper Oligoceno; Sternberg. 
Otolithus (Hoplostethus) ostiolatus, E. Koken, loc. cit. 189 , 
p. 116, pi. ix. figs. 4, 5. — Middle Oligocene ; Wal 
bockelheim. r 
Otolithus (Hoplostethus) pisanus, E. Koken, loc. cit. 1891, p. 1 a > 
pi. ix. fig. 1. — Pliocene; Orciano. 
Ololithus (Monocentris) hospes, E. Koken, foe. cit. 1891, p- 
0. (Apogonidarum) hospes, E. Koken, loc. cit. vol. xl. (1888), 
p. 278, pi. xviii. fig. 15. — Lower Tertiary ; Jackson Itiver, 
Mississippi. 
Otolithus (Monocentris) integer, E. Koken, loc. cit. 1891, P- ’ 
fig. 13. 0. (Apogonidarum) integer, E. Koken, loc. ci • 
1885, p. 114, pi. v. fig. 27.— Lower Eocene; Copen- 
hagen. 
