APPENDIX C. 



Species collected by John H. Clark and Arthur Schott, 

 ON the U. S. and Mexican Boundary Survey, under Maj. 

 Wm. H. Emory, U. S, A., and received too late for inser- 

 tion IN their proper places. 



1. Crotalus atrox, B. & G Page 5 



Pecos, Tex. 15. 35. 2f . John H. Clark. 



Eagle Pass, Tex. 15. 29.2^. Arthur Schott. 



2. Toxlcopbis pu^nax, B. & G Page 20 



Eagle Pass, Tex. 138.43.25. 28.4^. Arthur Schott. 



3. Elaps tenere, B. &G Page 22 



The ground-color of the present specimen is red, the same as in 

 Elaps fulvms ; the fact of its being fawn-colored in the specimen de- 

 scribed above must be attributed to the action of the preserving 

 fluid. The specimens here referred to are of a greater size, but ex- 

 hibit all the other characters by which we have distinguished this 

 species from Elaps fulvius. 



San Felipe, Tex. John H. Clark. 



Eagle Pass, Tex. Arthur Schott. 



4. Eutainia Marciaua, B. & G Page 36 



Eagle Pass, Tex. Arthur Schott. 



156 



