NOMENCLATURE AND MORPHOLOGY. 67 



Centmrchiis species, DeKay, Fishes N. Y. 28, 1842. (C. fas- 



ciatus DeK.) 

 Grystes Agassiz, Am. Jour. Sci. and Arts. (2), XVII, 297, 



1854. 

 Dioplites Gieaed, U. S. Pac. R. R, Surv. X, Fishes, 4, 1858. 

 Micropterus Cope, Pro. Ac. Nat. Sci. Phil. 83, 1865. (Name 



only.) 

 Micropterus Gill, Ann. Rep. Dept. Agric. 407, 1866. 

 Micropterus Gill, Pro. Am. Asso. Adv. Sci. XXII, B. 55, 



1873. 

 Dioplites Vaillant & Bocourt MSS. Miss. Sci. au Mexique, 



1874. 

 Suro Bleeker, Syst. Perc. Revis. <Ext. des Arc. Neer. XI, 



15, 1875. 

 Micropterus Bleeker, Syst. Perc. Revis. <Ext. des Arc. Neer. 



XI, 15, 1875. 

 Micropterus Jordan, Ann. N. Y. Lye. Nat. Hist. XI, 313, 



1877. 

 Micropterus Jordan, Man. Vert. E. U. S. 229, 1876; and 2d 



ed. 232, 1878. 

 Micropterus Jordan, Pro. U. S. Nat. Mus. II, 218, 1880. 

 Micropterus Vaillant & Bocourt, Miss. Sci. au Mexique : ined. 



Etymology: ftt/fpd? (^nikros), small; -^tfpov (^piteron), fin. 

 Type : Micropterus dolomieu Lacepede. 



Head well developed, its length varying from 3 to 3J 

 times in length of body ; compressed ; rather full between 

 the eyes; snout rounded; j^rofile straight; lower jaw 

 prominent and projecting. Scales on cheek, opercle, 

 subopercle, and interopercle, but none, or few, on the pre- 

 opercle. Eye moderately large, nearly median, but rather 

 nearer the snout than the preopercle. Nostrils round and 

 normal. 



