1889.] NATURAL SCIENCES OF PHILADELPHIA. 163 



3. Priacanthus bonariensis. 



Priacanthus bonariensis Guv. & Val. Ill, 1829, 105 (Buenos 

 Ayres) ; Giinther, I, 1859, 216. (South America.) 



Habitat. Atlantic Coast of South America. 



Etymology, from Buenos Ayres. 



This species is known to me from descriptions only. 



PSEUDOPRIACANTHUS. 



Pseudopriacanthus Bleeker, Versl. Ak. Wet. Amsterd., 1869, 

 241 (niphonius). 



Type Priacanthus niphonius C. & V., from Japan. 



Etymology, pseudos, false; Priacanthus. 



This genus is distinguished from Priacanthus by its deeper form, 

 its larger and rougher scales, its shorter anal fin, and by several 

 peculiarities of form. Two species are known, the one West Indian, 

 the other from Japan. 



Analysis of the American species of Pseudop? iaeanthus. 

 a. Head, 3 in length to base of caudal ; 1J in depth ; depth 2 in 

 length to base of caudal ; eye 2 in head, placed very high ; chin 

 very rough ; profile from*first dorsal spine to chin straight ; snout 

 extremely short and blunt ; mouth large and very oblique. Maxil- 

 laries reaching almost to the middle of eye, If in head; spines 

 striated, not serrated ; preopercle serrated ; an embedded spine at 

 angle of opercle ; preorbital roughly serrated ; scales large and very 

 rough; base of dorsal 2? times base of anal; tips of soft dorsal 

 reaching beyond base of caudal ; soft rays of dorsal, anal and ventrals 

 rough or serrated throughout ; caudal truncate ; ventrals large, ex- 

 tending to first ray of anal ; pectorals small, about as long as eye ; 

 fourth and last dorsal spines of equal length, second H times the 

 first, sixth the longest. Color scarlet red ; ventrals tipped with 

 black ; D. X, 12 ; A. Ill, 9 ; lateral line 40 to 50. altus. 4. 



4. Pseudopriacanthus altus. 



Priacanthus altus Gill, Proc. Acad. Nat. Sci. Phil., 1862, 132 

 (very young specimen from Narragansett Bay) ; Jordan & Gilbert, 

 Syn. Fishes X. A., 1883, 545 (from original type). 



Pseudopriacanthus altus, Jordan & Eigenmann, Proc. U. S. Nat. 

 Mus. 1887, 269 (Charleston). 



Pseydopriaeanthus ? Poey, Enumeratio, 1875, 40 (Havana). ' 



Habitat. Atlantic Coast of U. S. and West Indies, in deep water 

 (Rhode Island, Charleston, Pensacola, Havana). 



Of this rare species I have examined two adult examples 8 and 10 



inches in length from Charleston and Pensacola. 



