EASTMAN: CATALOG OF FOSSIL FISHES IN CARNEGIE MUSEUM. 385 



no fused or expanded haemal arches at the base of the tail. Intermuscular bones 

 present. Fin-fulcra absent; fin-rays more or less divided and articulated distally; 

 dorsal and anal fins small, the former usually short-based, above or behind the 

 pelvic pair. Scales thin, cycloidal and deeply imbricating, usually ganoid in their 

 exposed portion; lateral Hne not observable." (A. S. Woodward, I. c, Pt. Ill, p. 

 500). 



Genus Leptolepis Agassiz. 



"Head large and teeth minute; sclerotic ossified. Maxilla arched, with a 

 slightly convex dentigerous border; mandible prominent, and dentary sharply 

 rising into a thickened, obtuse elevation near its anterior extremity; preoperculum 

 broad mesially, with a large inferior limb, marked with radiating ridges; sub- 

 operculum large, but smaller than the trapezoidal operculum, from which it is 

 divided by an oblique suture. Vertebrae in the form of much-constricted cylinders, 

 with little or no secondary ossification. Pelvic fins relatively large; dorsal fin 

 about as long as deep, opposed to the pelvic pair or to the space between the latter 

 and the anal; anal fin small, not much extended; caudal fin deeply forked. Scales 

 completely covering the trunk; no enlarged or thickened ridge-scales." (A. S. 

 Woodward. I. c, P. Ill, p. 501). 



26. Leptolepis sprattiformis (Blainville). 

 1755. Figure by G. W. Knorr. 



Samml. Merkwiirdigk. Natur, pi. XXIII, figs. 2, 3; pi. XXVIII, fig. 3; pi. 

 XXIX, figs. 2-4. 

 1818. Clupea sprattiformis H. D. de Blainville. 



Nouv. Diet. d'Hist. Nat., Vol. XXVII, p. 330. 

 (?) 1839. Leptolepis pusiUus G. von Miinster. 



Neues Jahrb., p. 680. 

 1833-44. Leptolepis sprattiformis L. Agassiz. 



Poiss. Foss., Vol. II, Pt. I, p. 13; Pt. II, pp. 130, 294, pi. LXIa, fig. 1. 

 1839-44. Leptolepis macrolepidotus L. Agassiz. 



Ibid., Pt. II, p. 132, pi. LXI, figs. 4-6. 

 1863. Leptolepis sprattiformis A. Wagner. 



Abh. K. Bay. Akad. Wiss., Math.-Phys., CL, Vol. IX, pp. 741, 744. 

 1888. Leptolepis sprattiformis K. A. von Zittel. 



Handb. Palaont., Vol. Ill, p. 272, fig. 279. 

 1895. Leptolepis sprattiformis A. S. Woodward. 



Cat. Foss. Fishes Brit. Mus., Pt. Ill, p. 513. 



