72 BOOK OF THE BLACK BASS. 



two, the anterior or spinous division shortest, the posterior 

 lobed ; preoperculum smooth ; mouth large, sub-vertical ; lower 

 jaw largest ; caudal emarginate ; sides of the head scaled ; pec- 

 toral and ventrals small ; anal fin shorter than the hind part of 

 the dorsal. Representing Huro in the circle of Percinse." 

 (SWAINSON, Nat. Hist, and Class. Fishes, II, 202, 1839.) 



GRYSTES Agassiz, 1854. "I have already shown in my 

 1 Lake Superior ' that the genera Grystes and Huro of Cuvier 

 do not differ essentially one from the other, and must therefore 

 be united into one natural group ; moreover, when the fishes of 

 Kentucky shall be better known, it may become necessary to 

 substitute for either of them the name of Lepomis, introduced in 

 ichthyology by Rafiuesque, as early as the year 1820, for the 

 western species of this genus. If I hesitate to make the change 

 now, it is simply because I have not the means of deciding 

 upon the value of his many species. The species of this group 

 are indeed very difficult to characterize. They differ chiefly in 

 the relative size of their scales, the presence or absence of teeth 

 upon the tongue, though Cuvier denies the presence of teeth o'n 

 the tongue of any of them, etc. There are, besides, marked 

 differences between the young and the adults. These circum- 

 stances render it impossible to characterize any one species 

 without comparative descriptions and figures." (AGASSIZ, Am. 

 Jour.'Sci. and Arts, (2), XVII, 297, 1854.) 



GRYSTES Holbrook, 1855." Dorsal fin single, though deeply 

 notched; intermaxillary, maxillary, vomerine and palatine 

 teeth small and thickly set, or card-like ; preopercle not ser- 

 rated ; branchiostegal rays, seven." * (HOLBROOK, Ichthy. Sou. 

 Car. 25, 1855.) 



DIOPLITES Girard, 1858. " Body elongated, sub-fusiform in 

 profile, compressed. Head well developed. Preopercle smooth 

 and entire. Mouth large; lower jaw longest. Velvet-like teeth 



" Sometimes there are only six rays." Holbrook. 



