EASTMAN: FISHES FROM UPPER EOCENE OF MONTE BOLCA. 339 



to the hinder dorsal fin. The family comprises marine and freshwater fishes univer- 

 sally distributed in temperate and tropical regions. 



Genus Cyclopoma Agassiz. 

 This genus, supposedly extinct, includes a few Tertiary species, which struc- 

 turally bear a considerable resemblance to the existing Lates, and are actually 

 referred to that genus by P. Bleeker (Archiv. Neerland, 1876, Vol. XI, p. 263). 

 We prefer to follow the example of A. Smith Woodward, however, who agrees with 

 the original author in regarding it as a distinct genus. 



14. Cyclopoma (?) micracanthum (Agassiz). 



(Plate XLV, fig. 3, and Plate XLVII, fig. 2). 



1796. Holocentrus maculatus G. S. Volta, Ittioht. Veronese, p. 234, PI. LVI, fig. 3 



(errore) . 

 1796. Amia indica G. S. Volta, ibid., p. 149, PL XXXV, fig. 4 {errore). 

 1818. Amia indica H. D. de Blainville, Nouv. Diet. d'Hist. Nat., Vol. XXVII, 

 p. 347. 



1835. Smerdis micracanthus L. Agassiz, Poiss. Foss., Vol. IV, p. 33, PL VIII, figs. 



1,2. 



1836. Dules medius L. Agassiz, ibid., p. 93, PL XIII, fig. 4. 



1901. Cyclopoma (J) micracanthum A. S. Woodward, Cat. Foss. Fishes Brit. Mus., 



Pt. IV, p. 504. 

 1905. Cyclopoma {?) micracanthum C. R. Eastman, Mem. Soc. Geol. France, Vol. 



XIII, No. 34, p. 25. 

 1911. Cyclopoma (f) micracanthum C. R. Eastman, Mem. Car. Mus., Vol. IV, No. 7, 



p. 375. 

 Type. — Imperfect fish; olim Hartman collection, Goppingen. 

 This is a very small species, attaining a total length of about 10 cm. Length 

 of head with opercular apparatus about equal to the maximum depth of the trunk 

 and shghtly exceeding one-third of the total length to the base of the caudal fin. 

 Anterior dorsal fin with one spine and eight or nine articulated rays, its anterior 

 origin as far from the occiput as the termination from the caudal fin ; the second to 

 fourth spines about equal in size, their length not exceeding one-half the depth of 

 the trunk at their insertion, and scarcely exceeding that of some of the divided rays. 

 Anal fin with three spines and six articulated rays, less than the posterior dorsal 

 in extent; the second anal spine stoutest, but not longer than the third. 



Two small but excellently preserved examples of this species are contained 



