CROTAPHYTUS 105 



100th Merid., Vol. V, 1875, p. 565; Coues, Surv. W. 100th 

 Merid., Vol. V, 1875, p. 598; Yarrow & Henshaw, Ann. Rep. 

 Chief of Engineers for 1878, Surv. W. 100th Merid., Appendix 

 NN, 1878, p. 221 ; Yarrow, Bull. U. S. Nat. Mus., No. 2+, 1883, 

 p. 52 (part); Gunther, Biologia Central i-Amcric.ina, Rept., 1890, 

 p. 59 (part); Herrick, Terry & Herrick, Bull. Sci. Labor. 

 Denison Univ., Vol. XI, 1899, p. 141; Herrick, Terry & 

 Herrick, Bull. Univ. New Mexico, Vol. I, 1899, p. 141, pis. 

 XXII, XXIII; Cope, Report U. S. Nat. Mus. for 1898, 1900, p. 

 248, fig. 19 (part); Ditmars, Reptile Book, 1907, p. 113 (part); 

 Franklin, Copeia, 1913, No. 1, p. 2. 



Crotafhytus collaru var., Bocourt, Miss. Sci. Mex., Rept., 1874, p. 

 15 5, pi. XVII bis., figs. 5 and 6. 



CrotapAytus baileyi Stejneger, N. Amer. Fauna, No. 3, 1890, p. 103, 

 pi. XII, fig. I (type locality. Painted Desert, Little Colorado 

 River, Arizona); Stejneger, N. Araer. Fauna, No. 7, 1893, 

 p. 165; Van Denburch, Proc. Cal. Acad. Sci., Ser. 2, Vol. 6, 



1896, p. 339; Van Denburch, Occas. Papers Cal. Acad. Sci., V, 



1897, p. 53, fig.; Van Denburch, Proc. Acad. Nat. Sci. Phila., 

 1897, p. 461; McLain, Critical Notes, 1899, p. 2; Stejneger, 

 Proc. U. S. Nat. Mus., Vol. 25, 1902, p. 149; Grinnell, Univ. 

 Cal. Pubis. Zool., Vol. 5, No. 1, 1908, p. 160. 



Crotafhytus collaris baileyi Stone & Rehn, Proc. Acad. Nat. Sci. 

 Phila., 1903, p. 30; Bailey, N. Amer. Fauna, No. 25, 1905, pp. 

 35, 40; Meek, Field Columbian Mus., Zool. Ser., Vol. VII, No. 1, 



1906, p. 8; RuTHVEN, Bull. Amer. Mus. Nat. Hist., Vol. 23, 



1907, p. 512; Cockerell, Univ. Colorado Studies, Vol. VII, 

 No. 2, 1910, p. 131; Stone, Proc. Acad. Nat. Sci. Phila., 1911, 

 p. 224; Cary, N. Amer. Fauna, No. 33, 1911, p. 25; Van Den- 

 burgh, Proc. Cal. Acad. Sci., Ser. 4, Vol. 3, 1912, p. 147; Tay- 

 lor, Univ. Cal. Pubis. Zool., Vol. 7, No. 10, 1912, p. 346; Ellis 

 & Henderson, Univ. Colorado Studies, Vol. X, No. 2, 1913, p. 

 66, pi. I, figs. 3, 4; Van Denburch & Slevin, Proc. Cal. Acad. 

 Sci., Ser. 4, Vol. 3, 1913, p. 398; Atsatt, Univ. Cal. Pubis. Zool., 

 Vol. 12, No. 3, 1913, p. 33; Richardson, Proc. U. S. Nat. Mus., 

 Vol. 48, 1915, p. 406; Ruthven & Gaige, Occas. Papers, 

 Mus. Zool. Univ. Michigan, No. 8, 1915, p. 17; Van Denburch 

 & Slevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. 5, 1915, p. 102; 

 Strecker, Baylor Bulletin, Vol. XVIII, No. 4, 1915, p. 16; 

 Ellis & Henderson, Univ. Colorado Bull., Vol. XV, No. 6, 1915, 



