CENTEARCHID^. 27 



depth 21; eye moderate, as loDg as snout, rather smaller than opercular 

 flap, about 4} in head. Mouth moderate, the lower jaw slightly longest, 

 the maxillary reaching middle of eye, with a strong supplemental bone; 

 snout short, projecting, an angle over eye. Gill-rakers very long ; flap 

 larger than in the other species of the genus. 



Scales on cheek in 7 rows ; on body G— 17-14. Mucous cavities strong. 



Dorsal spines short and strong, as long as from snout to middle of 

 eye; soft dorsal high, soft anal higher, both largely scaly; caudal fin 

 emarginate ; pectoral fins long, reaching anal. Dorsal X, 10. Anal 

 III, 9. 



Color in spirits uniform olive-green, paler lines along the rows of scales ; 

 soft fins somewhat mottled, but no black blotch on dorsal or anal. 



This species bears much more resemblance to Lepio]pomus and Xystro- 

 plites than to its congeners. From A. cyanellus, it diff'ers in the greater 

 depth and compression of the body, in the longer spines, longer opercu- 

 lar flap, smaller mouth, and larger scales. 



Type, two specimens about six inches long, in the Museum of the 

 Philadelphia Academy of Natural Sciences, collected at Beaseley's 

 Point, New Jersey, by Dr. Leidy. 



21. ENNEACANTHUS PINNIGER, Gill & Jordan, sp. nov. 



A very handsome species, rather larger than any other of this genus, 

 and with larger fins. 



Body rather short, deep, compressed, regularly ovate in form ; the 

 depth half the length (without caudal); the head one-third. Eye large, 

 3J in head. Mouth rather small, very oblique, the maxillary reaching 

 to just opposite the front of the orbit. 



Dorsal spines rather long, the soft rays greatly elevated ; iii the male 

 fish as long as the head, reaching, when depressed, to the middle of 

 the caudal; in the female fish considerably shorter; anal spines long, 

 not rapidly graduated, the longest soft rays as long as those of the 

 dorsal. 



Ventral fins elongate ; the filiform tips of the longest rays in the 

 males reaching the first soft rays of the anal, the spines falling short 

 of the anal spines. In the females, the ventral fins are shortened and 

 scarcely reach the anal. Pectoral fins moderate, reaching the soft rays 

 of the anal. Caudal fin elongate, nearly as long as head. Lateral line 

 complete. 



The female fish has all of the fins very much less elevated, the 



