1919.] NATURAL SCIENCES OF PHILADELPHIA. 131 



46. C. parallelus Poey. 49. Cynoscion acoupa (Lacepede). 



(C. heringi Fowler, 1. c, 1906, 50. Nehrius microps Cuvier. 



p. 423, fig. 2.) 51. Plagioscion squamosissimus (Heck- 



47. C. undecimalis (Bloch). el). 



48. Anisotremus surinamensis (Bloch). 



52. Plagioscion monacanthus (Cope). 



(Corvina monacantha Cope, Trans. Amer. Philos. Soc. Phila., (2) XIII, 1866, 

 p. 402.) 



Head 3j; depth 3^; D. X, I, 33; A. 11,6; pores (enlarged scales) 

 in I. 1. to caudal base 50; 11 scales above 1. 1. to soft dorsal origin, 

 10 below to spinous anal origin; head width 2 in its length; snout 4; 

 eye 6|; maxillary 2; interorbital 3^; third dorsal spine 2|; second 

 anal spine 2; least depth of caudal peduncle 3|; caudal 1|; pectoral 

 Ij; ventral Ij. Body well compressed, back elevated. Head deep, 

 upper profile slightly concave above eye. Snout convex, length f 

 its ^^•idth. Eye center at first t in head. Mouth large lower jaw 

 slightly included. Maxillary reaches hind eye edge. Teeth in 

 bands in jaws, fine, with outer row enlarged, upper little more so. 

 Tongue free, smooth. Nostrils together, close before eye. Inter- 

 orbital convex. Hind preopercle edge entire, except 2 short points 

 at angle below. Rakers ii 4+10 v, lanceolate, 1| in eye or longer 

 than filaments. Scales finely ctenoid, in oblique rows on trunk. 

 Large scales on opercle and few behind eye. Of head only lips 

 naked. L. 1. of enlarged scales concurrent with dorsal profile to 

 anal, then midway or horizontal, and on caudal to its end. Dorsal 

 spines thin, fourth longest. Soft dorsal inserted slightly nearer 

 caudal base than snout tip, height about uniform. Anal inserted 

 about midway between ventral origin and caudal base, first spine 

 rudiment and second but little less than rays (damaged). Caudal 

 ends in median point behind. Pectoral 1^ to anal. Ventral in- 

 serted opposite pectoral origin, first ray ends in filament, spine 

 slightly less than half of fin. Vent well before anal, or at depressed 

 ventral tip. Color in alcohol dull uniform brownish, with brassy 

 and silvery reflections. Caudal and pectoral with three deep brown 

 cross-bars. Length 213 mm. No. 11,519, A. N. S. P., type of 

 Corvina monacanlha Cope. 



The above example has wrongly been referred to Plagioscion 

 squamosissimus (Heckel) by Jordan and Eigenmann,^ and allowed 

 to repose in its synonomy ever since. It appears identical vnih 

 Pseudosciaena surinamensis Bleeker,^ which name it replaces. In 

 the large anal spine it is allied with Plagioscion auraius (Castelnau). 



2 Rep. U. S. Fish Com., XIV, 1886 (1889), p. 382. 



3 Arch. Neerl. Sci. Nat. Harlem, VIII, 1873, p. 458, PI. 21. 



