534 CONTRIBUTIONS TO NOBTII AMERICAN ICHTHYOLOGY IV. 



.-strong:, not filamentous, the middle ones rather higher than the poste- 

 rior, which are considerably lower than the soft ra\ s. the highest spine 

 as ln- as from snout to middle of rye. Anal short and high, its spines 

 graduated. IVrtoral very long, 1J in head, reaching vent. Yentrals 

 long, nearly reaching vent, inserted below front of base of pectorals. 

 ( 'andal slightly double concave ; fins little scaly, except at base ; a rudi- 

 mentary groove at base of spinous dorsal, over which scales do not 

 pass. Head 2;< ; depth 2. D. X, 11 ; A. Ill, 7; Lat, 1. 50 j coeca 4-7. 

 L. 12 inches. Cape Cod to Florida ; generally abundant. 



(Ptrca airarta L. Syst. Nat.: Centroprixti* nii/rimns Cuv. & Val. iii, 37: Centropristi* 

 atrariua GUnther, i, 86: Centropristis atrarius Holbrook, Ich. S. Car. 42.) 



tt Dorsal spines produced in long filaments. (Trlloburus* Gill.) 



837. S. trafurcus (Linn.) J. & G. 



Grayish, with purple reflections; sides with G dusky gray vertical 

 bars meeting across the back; silvery below; head bronze, with blue 

 streaks in front of eye; dorsal shaded with olive, a large irregular 

 black spot near its middle; dorsal filaments red. Body slender, little 

 elevated, subfusiform. Mouth large, nearly horizontal, maxillary reach- 

 ing to opposite middle of orbit. Preopercle finely and evenly serrated. 

 Most of the dorsal spines and the three lobes of the caudal produced 

 and filamentous. Head 3 ; depth about 4. D. X, 11 ; A, III, 8 ; Lat. 1. 

 about 55. South Atlantic coast ; not very common. 



(Pcrca tnfurcn Linn. Syst. Nat. i, 489: CeHtrttprixtix trifurca Holbrook, Ich. S. Car. 

 18(50, 49: AnthiasJ'itrcattut Giiiither, i, 91.) 



** Caudal lunate <>r truncate. 



t Seme on lower limb of preopcrcle small, not autrorse. 

 a. Canine teeth small. 



b. Dorsal fin continuous, none of tin- spines elevated. 



C. Seme ;it the anjjle of the preopercle forming <"ic '"' two groups of 

 radiating spines; soft dorsal rather short. (D'n>lcctntm t Hollir.) 



838. S. fascicailaris Cnv. & Val. %um7 n*lt : S,rnm<>. 



Ilrownish al>ove, silvery below, sides marked with 7 or S longitudinal 

 dark lilue line.>: head marked with blote'.ies and lilies of dark blue; 

 three or four disiinei llnc st ripes across top of head ; two across pre- 

 mliital, the h\\cr forked ; iins barred with blue and pale \ellow. Body 

 elnii-ale, not ele\ated. Head naket 1 above ; month rather large, maxil- 

 lary narrow, nearly reaching posterior margin of orbit. Dorsal and 



Gill, < 'at. TishcN Kasi ( ,,;isi N. Am. I ,-:'.! . ::ii ; not < -luiractrri/. -.1 : type I'crca trifurt 

 L. (r/jf/f, three ; ;..!,,, -, .'.r/j<!. tail.) 



Ilii Hi KM. k, Ich. S. C. ril. 1, ::.', I -.V.i : i\|- .v, rra nun faxc ini Juris C. & V. (5??, 

 : nXf/Hrpor, spur.) 



