14 OPHIDIANS. 
SYSTEMATIC TABLE OF WELL-ASCERTAINED SPECIES 
OF NORTH AMERICAN SERPENTS.* 
First GEnus—CROTALUS, Lina. 
. Crotalus durissus, Zinn. Penna., Louisiana, Miss. 
“  adamantus, Beauv. South Carolina. 
“ — atrox, B. & G. Texas. 
lucifer, B. & G. Oregon. 
“  confluentus, Say. Arkansas, Texas. 
“  molossus, B. & G. Sonora. 
“ — Oregonus, Holbr. Columbia River. 
TID oR oO 
Seconp Gexts—CROTALOPHORUS, Gray. 
1. Crotalophorus miliarius, Holbr. Georgia, S. Carolina. 
2. ie consors, B. & G. Texas. 
3. i tergeminus, Holbr. Wis., Mich., Ohio. 
4. ne Edwardsii, B. & G. Mexico, Sonora. 
5. se Kirtlandii, Holbr. Ohio. 
Tuirp Genus—AGKISTRODON, Beauv. 
1. Agkistrodon contortrix, B. & G. Ohio, Pa., 8. C., La. 
FourtH GENus—TOXICOPHIS, Troost. 
1. Toxicophis piscivorus, B. & G. Louisiana. 
2. af pugnax, B.&d G. Texas. 
Firrh Gexus—ELAPS. Fitz. 
1. Elaps fulvius, Cuv. South Carolina. 
2. “ tenere, B. d& G. Texas. 
3. “  tristis, B. & G. Mississippi, Texas. 
* Catalogue of North American Reptiles, by Baird and Girard. Pub- 
lications by the Smithsonian Institute, Washington, 1853. 
