20 UNITED STATES AND MEXICAN BOUNDARY. 



86. OPHIBOLUS BOYLII, B. & G 



Ophibolus boylii, B. & G. Catal. N. A. Serp. Jan. 1853, 82. 

 Coronella balteata, Hallowell, Pr. A. N. Sc. Jan. 1853, 236 



Gila desert. A. Schott. 



87. OPHIBOLUS SPLEXDIDUS, B. & G 



Plate XIV. 



Ophibolus splendidus, B. & G. Catal. N. A. Serp. Jan. 1853, 83 



Sonora. J. H. Clark. — 1851. Tucson, Sonora. A. Schott. 



88. OPHIBOLUS SAYI, B. & G 



Coronella sayi, Holbrook, N. Am. Herp. Ill, 1842, 99. 

 Ophibolus sayi, B. &, G. Catal. N. Am. Serp. 1853, 84. 



1699. Indianola, Texas. J. H. Clark. 



89. GEORGIA OBSOLETA, B. & G 



Plate XV. 







Georgia obsoleta, B. & G. Catal. 1ST. Am. Serp. Jan. 1853, 158. (Not Coluber obsoletus, of Say.) 



1862, 1864. Eagle Pass and Lower Rio Grande, Texas. A. Schott and J. H. Clark. 





90. BASCANION FLAVIVENTRIS, B. & G. 



Coluber flaviventris, Say, Long's Exped 

 B asc anion Jlaviventris, B. & G. Catal. IS 



Indianola to San Antonio. J. H. Clark. 



91. MASTICOPHIS SCHOTTI, B. & G. 



Plate XVIII. 



3fasticophis schotti, B. & G. Catal. N. Am. Serp. 1853, 160 



1972. Eagle Pass, Texas. A. Schott. 





92. MASTICOPHIS ORNATUS, B. & G. 



Plate XVII. 



Masticophis ornatus, B. & G. Catal. N. Am. Serp. Jan. 1853, 102. 



1971. San Antonio to El Paso. J. H. Clark.— 1970. Howard Serines, Texas. A. Schott 



93. MASTICOPHIS TESTACEUS, B. & G 



Plate XVI. 









Coluber testaceus 

 Psa mmophis Jlav 

 Masticophis fla vi 









