4G4 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



finely serrate ; 5 or 6 rows of scales on clieek. Fins liigb ; ventral spine 

 reachinfj beyond the vent. Mandible about half the length of the head. 

 Color green, with series of dark-brown spots on sides, below lateral line, 

 forming interrupted longitudinal lines; belly yellowish; a dusky oper- 

 cular spot; fins with reddish or brownish markings; the dark colors 

 on vertical fins forming reticulations around paler spots; conspicuous 

 ocellated black spot usually present on last rays of dorsal fin, especially 

 distinct in the young, disappearing with age. Head 3|; depth 2. D. 

 XI or Xir, 12; A. YII or VIII, 15; scales 5-44-14. L. 6 inches. 

 North Carolina to South Illinois and southward; abundant in lowland 

 streams. 



{Ldbrus macropterus Lac^pcde, Hist. Nat. Poiss. iii, 447, 1802; Jordan, Bull. U. S. 

 Nat. Mus. X, 30: Lahrus irideits Lac6peile, Hist. Nat. Poiss. iv, 716, 1802: Centrarclms 

 irideus Holbr. Iclitli. S. C. 18G0, 18: Centrarclms irideus Giinther, i, 257: Centrarelius 

 irideus Jordan, Bull. U. S. Nat. Mus. s, 30.) 



243.— POMOXYS Rafinesque. 

 Cra/ppies. 



(Pomoxis Rafinesque, Joui'n. Acad. Nat. Sci. Phila. i, 417, 1818: type Pomoxis annularis 

 Raf.) 



Body more or less elongate, strongly compressed, the snout projecting. 

 Mouth large, oblique ; maxillary broad, with a well-developed supple- 

 mental bone. Teeth on vomer and palatines ; few or none on tongue. 

 Lower pharyngeals narrow, with sharp teeth. Gill-rakers long and 

 slender, numerous. Opercle emarginate; preopercle slightly dentate. 

 Scales large, moderately ctenoid. Fins large, the anal larger than the 

 dorsal, of 6 spines and about 17 rays ; dorsal with 6-8 graduated spines, 

 the spinous dorsal shorter than the soft part; caudal fin emarginate. 

 Branchiostegals 7. (-«),aa, opercle ; o^tj?, sharp; the opercle ending in 

 two flat points instead of an " ear-flap.") 



a. Dorsal spines G. {Pomoxijs.) 



'724. P. aBiBiuBaris Raf.— Crfljjjne; Bachelor; Xeiv Light; CamphelUie. 



Body elongate. Head long, the profile more or less strongly S shaped, 

 owing to the projecting snout, depressed occipital region, and very 

 prominent thickened ante-dorsal area. Mouth very wide, the maxillary 

 reaching past the pupil. Scales on cheeks in 4-5 rows. Eye large, 4 

 in head. Color silvery olive, mottled with dark green, the dark marks 

 chiefly on the upper part of the body and having a tendency to form 

 narrow vertical bars; dorsal and caudal fins marked with green; anal 

 fin pale, nearly plain. Fins very high, but lower than in P. sparoides. 

 Head 3 ; depth 2^. D. YI, 15 ; A. VI, 18 ; Lat. 1. 36-48. L. 12 inches. 



