oY PREFACE. 
J. Hammron Covrrr, Esq., of St. Simon’s Island, Georgia, has also furnished 
me with several Serpents of that state; and to him I owe a knowledge of the 
Gopher Snake, perhaps the largest and most beautiful of our Serpents. 
Professor Troost of Nashville, to whom I owe so much in other departments 
of Herpetology, has sent me several Serpents, and furnished we with a drawing 
of his Trigonocephalus atrofuscus. 
My friend Dr. Dexay has also procured me a good many Serpents, and 
furnished me with some excellent remarks on their habits. 
To Professor Kirttanp of Ohio, I give my thanks for a beautiful undescribed 
Rattlesnake of the western country. 
JOHN EDWARDS HOLBROOK. 
Medical College, Charleston, South Carolina, 1842. 
