926 FISHES — CENTRAECHIDJE. 



Storer, and after him Kirtland and others, have confounded this fish 

 with P. annularis. The synonym carolinensis, Gill, was given on the pre- 

 sumption that the Carolina fish was specifically difierent from that in- 

 habiting the Great Lakes, which, however, does not seem to be the case. 



Both this species and the preceding have been recommended for the 

 stocking of ponds. 



Genus 62. CENTRAECHUS. Cnvier and ValenoienneB. 



Centrarohus, sp., Cuvier et Valenciennes, Hiat. Nat. des Poissons, iii, 1829, 84. 



Cenirarchua, Agassiz, American Journal Soi. Arts, 1854. 



Eucentrarchus, Gill, Amer. Jonin. Sci. Arts, 1864, 92 {irideus, name only). 



Type, Labrua irideus, Lacepede. 



Etymology, Icentron, spine ; arehos, anns, from the many anal spines. 



Dorsal and anal fins about eqnal in extent, the soft portion of the latter longest and 

 most posterior, the two fins being obliquely opposed ; spinous dorsal longer than soft 

 part forming angle with it, the spines normally about 12 in number, not rapidly 

 graduated; anal spines normally 8; body deep, compressed; mouth moderate; lower 

 jaw longest ; supplemental maxillary bone well developed ; teeth on palatines ; gill 

 rakers setiform, very long, in large number (25 to 30) on anterior gill arch, armed with 

 small teeth ; scales nearly smooth ; operole emarginate, ending in two flat points ; 

 caudal flu emarginated. Bat one species of this genus is now known. 



Synonymy. — The name Centrarchns was first proposed for Amilojplites rujaestria, Cen- 

 trarohus irideus, and Pomoxys spartides under the names of 0. wneus (LeSaeur), 0. pen- 

 tacanthus (C. & V.), C. irideus (Lac), and C. sparoides (Lac). No type was assigned. 

 Afterwards (1832) species of Pomoxys (hexaoanthus) and of Chanobryttus (gulosus and 

 viridis) were added by Cuvier and Valenciennes. Later (1842) DeKay added two nom- 

 inal species of Mioropierus (fatciaius and ohscurus). In 1854, Prof. Agassiz revived the 

 Bafineequian genera, Amiloplites, Pomoxis, and Calliurus for species then referred to 

 Centrarohus, properly retaining the name Centrarohus for the species belonging to the 

 original genus which had not previously been made types of other genera, i. e., 0. irideus. 

 In 1864, Prof. Gill suggested the name Eucentrarolms for Centrarohus irideus to be used 

 in case of the general adoption of the rule requiring that the first species mentioned 

 under a new genus should be considered its type, unless some other type was specified. 

 The species first mentioned under Centrarohus was C. ceneus, and under this view, Cen- 

 trarohus would be a mere synonym of Amhloplites. The general common sense of natu- 

 ralists has, however, rejected the " first species " rule as impraotioable and undesir- 

 able. 



115. Centkaechus mackoptertjs (Lacepede) Jordan. 



Shining Bass; Large-finned Bass. 



Labrus maoropterus, Lacepede, Hist. Nat. Poiss., iii, 447. 



Centrarohus maoropterus, Jordan, Bull. U. S. Nat. Mus., No. 10, 1877, 361 ; Bull. U. S. 



Nat. Mus,, No. 12, 1878,36; Bull. Hayden's Geol. Surv., iv, 1878, 437; Man. Vert^ 



1678, 246. 

 Xoi»ru« irideus, (Boso M88.) Lacbpbdk, Hist. Nat: Poiss., iv, p. 716, pi. 5, f. 3. 



