NOMEXCLATURE AND MORPHOLOGY. 67 



Centmrchm species, DeKay, Fishes N. Y. 28, 1842. (0. /«><- 



ciatus DeK.) 

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



1854. 

 JDioplites Girard, U. S. Pac. R. R. Surv. X, Fishes, 4, 1858. 

 3Iicropterus Cope, Pro. Ac. Nat. Sci. Phil. 83, 1865. (Name 



only. ) 

 Mkropterns 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. 

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



15, 1875. 

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



XI, 15, 1875.^ 

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



1877. 

 Micropterm 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: ;ut/fpd? (ynlkros), small; Trts^ov (pteron), fin. 

 Type : Micropterus dolomieu Lacepede. 



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

 times in length of body ; compressed ; rather full between 

 the eyes; snout rounded; profile straight; lower jaw 

 prominent and projecting. Scales on cheek, opercle, 

 suboperele, 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. 



