TRIGONOCEPHALUS PISCIVORUS. 37 



Water Viper. Why he should also have referred to Plate xliv. is inconceivable, 

 as that is the Black Viper, an animal entirely distinct; and the same may be said 

 of the specific name tisiphone, for which he refers to Shaw, whose Coluber 

 tisiphone is neither the xliii. nor the xliv., but the xlv. plate of Catesby, which is 

 his Brown Viper, and is probably only a dark Tropidonotus fasciatus before it has 

 shed its skin; for it is like no other snake in Carolina. 



As to the Toxicophis leucostoma of my friend Professor Troost, of Nashville, J. 

 was from the first disposed to regard it as a variety of the Trigonocephalus 

 piscivorus, from the general correspondence in the number of plates and scales, 

 as well as from the habits of his animal; and, the examination of a specimen sent 

 me from Tennessee, proves it to be identical with our animal. 



