274 ACTINOPTEEYGII. 
supports of the dorsal fin are dagger-shaped, having a 
aminar wing both in front and behind. Lewis Coll. 
46518. Another more imperfect elongated specimen displaying part 
of the operculum of both sides, apparently with a small 
acumination on its hinder border. Lewis Coll. 
Charitosomus lineolatus (Pictet & Humbert). 
[Plate XY. fig. 4.] 
1866. Solenognathus lineolatus, Pictet & Humbert, Nouv. Rech. Poiss. 
Foss. Mt. Liban, p. o6, pi. iv. figs. 4-7. 
1887. Solenognathus lineolatus, J. W. Davis, Trans. Roy. Dublin Soc. 
[2] vol. iii. p. 531, pi. xxvi. fig. 6. 
Type. Imperfect fishes ; Geneva Museum. 
The type species of the so-called Solenognathus (Pictet & 
Humbert, non Swainson), attaining a length of about 0’07. Length 
of head with opercular apparatus contained five times, and maximum 
depth of trunk about thirteen times in the total length of the fish 
to the base of the caudal fin. Operculum bearing a small broad 
spine on its hinder border. Dorsal fin situated just within the 
hinder half of the trunk; pelvic fins arising opposite the origin of 
the dorsal, the distance between these and the pectorals equalling 
about twice the length of the head with opercular apparatus; anal 
fin arising just behind the middle point between the pelvic and 
oaudal fins. 
Form. ^ Log. Upper Cretaceous : Sahel Alma, Mt. Lebanon. 
P. 4752. Fine specimen 0*073 in length, displaying the form and 
proportions of the mandible and the greater part of the 
fins, imperfectly figured by Davis, loc. cit., re-figured in 
PL XV. fig. 4. Lewis Coll. 
46523, 48135-40, 47389. Eight specimens in various states of 
preservation. Xo. 48137 exhibits traces of the stout 
teeth at the back of the mouth. Lewis Coll. 
P. 9174. Five more fragmentary specimens, two showing the 
acumination on the hinder margin of the operculum. 
Lewis Coll. 
Charitosomus hakelensis (Davis). 
1887. Spaniodon hakelensis, J. W. Davis, Trans. Roy. Dublin Soc. [2] 
vol. iii. p. 591, pi. xxxiv. fig. 4. 
1898. Charitosomus hakelensis, A. S. Woodward, Ann. Mag. Nat. Hist. 
[7] vol. ii. p. 412. 
