608 Davis—On the Fossil Fishes of the Chalk of Mount Lebanon. 
M. Pictet (‘‘ Poiss. foss. du M. Liban.,” 1850, p. 43) points out the error 
fallen into by M. Agassiz, and considers that Rhinellus should be removed from 
the Scleroderms and placed with the Esocides; the long beak, single dorsal 
situated behind the middle of the body, the abdominal position of the ventral fins 
all point to its relationship with Belone. Dr. Giinther (‘‘ Geol. Magazine,” 1864, 
vol. i., p. 114), whilst describing the genus Plinthophorus, falls into the error of 
supposing that Rhinellus had three rows of lateral external scutes, and differed in 
this respect from his new genus. Dr. Giinther states that the position of the dorsal 
fin in the middle of the body removes it most clearly from any relationship with 
Belone, which Cuvier has associated with Esox. 
MM. Pictet and Humbert, in their new researches (‘‘N. rech. sur les poiss. 
foss. du M. Liban.,” 1866, p. 81), indicate the error of Dr. Giinther in regard to 
the external scutes of Rhinellus, but accept the correction with regard to its 
relationship with Belone, stating that new specimens have shown that the dorsal 
fin is not so far back as was formerly supposed, and that they present an incon- 
testable analogy with Opistopteryx ; they are therefore considered as a member of 
the numerous family of the Halecoides. 
The only member of the genus hitherto described from Mount Lebanon is 
R. furecatus, Agassiz, from Sahel Alma; two new species from the same deposits 
will now be added from the admirable collection made by Mr. Lewis, and also 
three species from the hard chalk of Hakel. 
Rhinellus furcatus, Agassiz. 
R. fureatus. Acassiz, L., 1834. ‘Rech. sur les poissons fossiles,” vol. ii., pt. I1., 
p. 260, pl. tvimd., fig. 5, non fig. 6. 
R. furcatus. Hecker, 18438. ‘ Fische Syriens,” p. 238, pl. xxmu., fig. 1, which 
represents Pycnosterinx russeggeril, contains also a head of R. furcatus. 
R. fureatus. Picret, J. F., 1850. ‘* Dese. de quelques poissons fossiles du Mont 
Liban.,” p. 44, pl. vuit., figs. 3, 4. 
R. furcatus. Prorer and Humperr, 1866. ‘‘ Nouv. rech. sur les poissons fossiles 
du Mont Liban.,” p. 82, pl. x1., figs. 5-8. 
Formation and Locality.—Soft chalk: Sahel Alma. 
£x coll_—Museum at Geneva (type). 
Rhinellus robustus, Davis. 
(Pl. xxxvit., fig. 5.) 
Several specimens of this species have been found in the soft chalk of Sahel 
Alma, but have not hitherto been discovered in the hard chalk of Hakel. Their 
