CHRONOLOGICAL CATALOGUE. 23 



Baird, Spencer F., oHfi Charles Girard— Continued. 



John Varden. District of Columbia and Louisiana. 



Dr. J. B. Barratt. Western Soutli Carolina. 



Miss Charlotte Paine and Mr.s. M. E. Daniel. "Western S. Carolina. 



Dr. S. B. Barker. Charleston, S. C. 



Prof. F. S. Holmes and Dr. W. J. Burnett. South Carolina. 



E. E. Cuyler and Dr. W. L. Jones. Georgia. 



D. C. Lloyd. Eastern Mississippi. 



Dr. B. F. Shumard and Col. B. L. C. "Wailes. Mississippi. 



James Fairie. Mexico and "Western Louisiana. 



Capts. R. B. Marcy and G. B. McClellan, U. S. A. Red River, Ark. 



Ferdinand Lindheimer. Central Texas. 



Col. J. D. Graham, U. S. A. The speqimens collected while on the U. S. and Hex. Bound- 

 ary Survey, by Mr. J. H. Clark, viz., in Texas, New Mexico, and Sonora. 



Maj. "W. H. Emory. Specimens collected on the U. S. and Mexican Boundary Survey, by 

 Arthur Schott, at Eagle Pass, Tex., and by J. H. Clark, in Texas and New Mexico. 



Gen. S. Churchill, U. S. A. Valley of the Rio Grande. 



Dr. L. Edwards, TJ. S. A. Northern Mexico. 



Dr. "Wm. Gambel. New Mexico and California. 



Dr. John L. Le Conte. Littoral California. 



Dr. C. C. Boyle and J. S. Bowman. Central California. 



Dr. A. J. Skilton. Species collected in California by Henry Moores, Esq. 



U. S. Exploring Expedition. Littoral California and Oregon. 



Academy of Natural Sciences of Philad. Various unique specimens described by Dr. Hol- 

 brook. 



Boston Society of Natural History. California. 



"Smithsonian Institution, January 5, 1853." 



SYSTEMATIC INDEX OF "WELL- ASCERTAINED SPECIES OF NORTH AMBRI- 

 CAN SERPENTS. 



Ckotalus, Linn. 



Page. 



1. Crotalus durissus, Linn Penna., Louisiana, Mississippi 1 



2. " adamanteus, Bea.uv South Carolina 3 



3. " flirox, B. &G.,n. s Texas 6 



4. '' lucifer, B. & G Oregon 6 



5. " confluentus, Say Arkansas, Texas 8 



6. '• molossus.B. ScG.,11.3 Sonora 10 



7. " oregonus, Hoihv Columbia River 145 



CROTALOPHORUS, Geay. 



1. Crotalophorus miliarius, Holbr Georgia, South Carolina 11 



2. " consors,B. &G.,n. 8 Texas 12 



3. " lergeminus, HOLBK Wise, Mich., Ohio 14 



4. " Edwardsii, B. ifc G.,n. 8 Mexico, Sonora 15 



5. " Kirtlandii, HOLBK Ohio 16 



Agkistrodon, Beauv. 

 1. Agkistrodon contortrix, B. & G Ohio, Penna., S. C, La 17 



ToxicopHis, Troost. 



1. Toxicophis piscivorug, B. <fc G Louisiana . 



2. " pugnax, B. &.G.,n. a Texas 



ELAPS, Fitz. 



21 



1. Elaps fulvius , Cuv South Carolina 



2. " tenere, B. & G., n. 8 Texas 22 



3. " tristis, B. &G.,n. 8 Mississippi, Texas 28 



EUTADflA, B. & G. 



1. Eutainia saurita, B. & G Mass., Penna., N. Y.,Md.,Va 24 



2. " faireyi, B. &G.,n. s Louisiana 25 



