TRIGONOCEPHALUS ATRO-FUSCUS. 45 
Generat Remarks. I have never seen the Trigonocephalus atro-fuscus, and 
have therefore given the above description of the animal entirely from notes 
furnished me by my friend Dr. Troost, of Nashville. It seems, however, closely 
allied to the Trigonocephalus contortrix in its habits, and in the arrangement 
of scales not carinated on the neck, and is in fact called in Tennessee Highland 
Moccassin. 
