46 COPEIA 



Radcliffe refers to the small electric ray Narcine 

 from Beaufort as Narcine brasiliensis corallina a sub- 

 specific name used by Garman for the Florida speci- 

 mens apparently on account of their red color. I 

 doubt the taxonomic value of this color difference, 

 as specimens of Aetobatis which I have observed on 

 the west coast of Florida had a reddish color, differ- 

 ent from the clear black coloring of North Carolina 

 specimens. At any rate Beaufort Narcine, which I 

 have taken, have not been reddish. 



The large electric ray Tetronarce Occident alls 

 has been excluded from the Elasmobranchii of the 

 North Carolina coast by Mr. Radcliffe as the records 

 on which Dr. Smith included it in Fishes of North 

 Carolina were indefinite. When preparing my 

 paper on Sharks and Rays of Cape Lookout (Proc. 

 Biol. Soc, Wash., 1915, page 89) I was of the same 

 opinion, but recently I have taken two examples off 

 Cape Lookout, which are now in the American 

 Museum of Natural History, New York. 



Referring to Radcliffe's note on the feeding 

 habits of Mobula olfersi (page 280), 1 will say that 

 like most of the Elasmobranchii they have very 

 varied feeding habits, but I have often seen then^ 

 feeding on "minnows," have caught them on hook 

 baited with living "minnow" and have usually found 

 in the many that I have examined that they contained 

 "minnows" although occasionally I have found that 

 they contained substances just as described by Mr. 

 Radcliffe, and I saw the examination which he men- 

 tions as being made on July 10, 1913, on 9 examples 

 [which I had caught the night before, July 9th] by 

 Prof. W. P. Hay, and in fact opened several of their 

 stomachs for this examination and discussed their 

 unusual contents with Prof. Hay. 



