26G 
ACTINOPTEErGII. 
Rhinellus furcatus, Agassiz. 
[Plate XIII. figs. I, 2.] 
1844. Rhinellus f urcatus, L. Agassiz, Poiss. Foss. vol. ii. pt. ii. p. 2C0, 
pi. Iviii h. fig. 5 [non fig. 6). 
1849. Rhinellus furcatus, Z. in Russegger’s Reisen, vol. ii. 
pt. iii. p. 340, pi. xxiii. fig. 1 h. 
1850. Rhinellus furcatus, F. J. Pictet, Poiss. Foss. Mt. Liban, p. 44, 
pi. viii. figs. 3-4. 
1866. Rhinellus f urcatus, Pictet & Humbert, Nouv. Recb. Poiss. Foss. 
Mt. Liban, p. 82, pi. xi. figs. 5-8. 
1873. Rhinellus furcatus, W. von der Marck, Palfeontogr. vol. xxii. 
p. 60, pi. ii. fig. 4. 
1887. Rhinellus fu7'catus, ^. Davis, Trans. Roy. Dublin Soc. [2] 
vol. iii. p. 608. 
Type. Head and abdominal region ; olini Amic Collection, Paris. 
The type species, attaining a length of about 0'2. Length of the 
head with opercular apparatus equalling or slightly exceeding the 
length of the trunk from the pectoral arch to the base of the caudal 
fin ; maximum depth of trunk contained from four to five times in 
the same measurement. Dorsal fin arising at the middle point 
between the occiput and the base of the caudal fin ; pelvic fins about 
half as large as the pectorals and arising just in advance of the 
origin of the dorsal; anal fin completely behind the dorsal, arising 
behind the middle point between the pelvic pair and the caudal fin. 
Scales of the lateral line conspicuously thicker than the others. 
Form. ^ Loc. Upper Cretaceous: Sahel Alma, Mt. Lebanon : 
Sendenhorst, Westphalia. 
48096-97. Two imperfect large specimens, with the trunk shortened 
by distortion. The second displays the small recurved 
teeth apparently in the mandible. Lewis Coll. 
49525. A nearly complete fish slightly distorted, shown of the 
natural size in PI. XIII. fig. 2. The parts of the head 
and opercular apparatus are obscure; but there are traces 
of the close series of minute recurved teeth near the front 
of the jaws. Lewis Coll. 
P. 4762. Another nearly complete fish, with depressed fins, shown 
of the natural size in PI. XIII. fig. 1. The thickened 
scales of the lateral line are displayed above the vertebral 
column in part of the abdominal region. Lewis Coll. 
48090-91, 48092, 49544. Four imperfect specimens, the second 
and third displaying the thickened scales of the lateral 
line. Lewis Coll. 
