1884.] NATURAL SCIENCES OP PHILADELPHIA. 313 



? Seserinus xanthurus Quoy & Gaimard, "Voy. Freyc. Zool., 384, 

 1824." 



? Rhombus xanthurus Cuvier & Valenciennes, Hist. Nat. Poiss., ix, 405 

 (Brazil). 



? Bhomhus argentipinnis Cuvier & Valenciennes, Hist. Nat. Poiss., ix, 

 405, 1833 (Montevideo). 



? Rhombus crenulatus Cuvier & Valenciennes, Hist. Nat. Poiss., ix, 410, 

 1833 (Cayenne). 



? Rhombus orbicularis Guichenot, "Mem. Soc. Imp. So. Natur. Cher- 

 bourg, xii, 245, 1866" (Cayenne). 



Habitat. — New York to Jamaica, also probably southward to 

 Brazil. 



As Dr. Bean has shown the identity of the northern fish with 

 that found in Jamaica, there seems to be no doubt of the pro- 

 priety of retaining the name paru for this species. 



Possibly the South American species (xanthurus) is different, 

 the number of fin rays being given as D. lY, 40 ; A. Ill, 39. 



2. Stromateus triaoanthas. 



Stromateus triacanthus Peck, "Mem. Amer. Acad., ii, pt. 48, pi. 2, f. 

 2, 1804" (New Hampshire); Giinther, Cat. Fish. Brit. Mus., ii, 398, 

 1860 (Boston ; New York); Jordan & Gilbert, Proc. U. S. Nat. Mus., 

 1882, 597 (Charleston, S, C); Jordan & Gilbert, Syn. Fish. N. A., 

 451, 1882. 



Peprilus triacanthus Storer, Fish. Mass., 60, 1839 (Massachusetts). 



Rhombiis triacanthus Dekay, New York Fauna, Fish, 137, pi. 26, 1842 

 (New York Harbor). 



Poronotus triacanthus Gill, Cat. Fish. East Coast N. A., 1861, 35 ; 

 Jordan & Gilbert, Proc. U. S. Nat. Mus., 1878, 377 (Beaufort, N. C); 

 Bean, Proc, U. S. Nat. Mus., 1880, 91 (Wood's Holl, Mass.; Noank, 

 Conn. ; Eastport, Me. ; Portland, Me. ; Norfolk, Va. ; Tompkinsville, 

 N. Y.; Banquereau; Vineyard Sound ; Gloucester, Mass.). 



Stromateus cryptosus Mitchill, Trans. Lit. Phil. Soc. New York, i, 365, 

 pi. 1, f. 2, 1814 (New York Bay); Cuvier & Valenciennes, Hist. 

 Poiss., ix, 408, 1833. 



Habitat. — Nova Scotia to Charleston. 



The nomenclature of this species offers no difficulties. The 

 generic name Poronotus proposed for it by Dr. Gill, seems unnec- 

 essary, as the species is evidently very closely related to S. 

 simillimus^ which lacks the series of pores, on which Poronotus 

 was based. 



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