13. COLUBRIDM 



Zamenis lateralis futiginosus Cope, Amer. Naturalist, Vol. XXIX, 1895, 

 p. 679 (type locality, Santa Margarita Island, Lower Calif- 

 ornia, Mexico); Cope, Report U. S. Nat. Mus., for 1898, 1900, 

 p. 809. 



Bascanion piceum Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, Vol. 5, 

 1896, p. 1006; Van Denburgh, Proc. Cal. Acad. Sci., Ser. 2, Vol. 

 6, 1896, p. 347; RuTHVEN, Bull. Amer. Mus. Nat. Hist., Vol. XXIII, 

 1907, p. 574; Van Denburgh & Slevin, Proc. Cal. Acad. Sci., 

 Ser. 4, Vol. 3, 1913, p. 416. 



Zamenis flagellum Mocquard, Nouv. Arch. Mus. Hist. Nat., Paris, Ser. 

 4, Vol. I, 1899, p. 323. 



Zamenis ftagellum ftagellum Cope, Report U. S. Nat. Mus., for 1898, 

 1900, p. 799 (part); Terron, Mem. y Rev. Soc. Cient., Antonio 

 Alzate, Vol. 39, 1921, pp. 165, 170. 



Zamenis ftagellum Jrenatus Brown, Proc. Acad. Nat. Sci. Phila., 1901, 

 p. 60. 



Bascanium ftagellum Meek, Field Columbian Mus., Zool. Ser., Vol. VII, 

 No. I, 1906, p. 15. 



Zamenis ftagelliformis Jrenatus Ditmars, Reptile Book, 1907, p. 288. 



Zamenis ftagellijormis piceus Ditmars, Reptile Book, 1907, p. 288. 



Bascanion ftagellum Stone, Proc. Acad. Nat. Sci. Phila., 191 1, p. 231. 



Bascanion laterale fuliginosum Van Denburgh & Slevin, Proc. Cal. 

 Acad. Sci., Ser. 4, Vol. 4, 1914, pp. 133, 145. 



Zamenis ftagetliformus Jrenatus Ruthling, Copeia, No. 15, 191 5. 



Coluber ftagellum Jrenatus Grinnell & Camp, Univ. Cal. Publ. Zool., 

 Vol. 17, No. 10, 1917, p. 190; Cowles, Journ. Entomol. & Zool., 

 Pomona College, Vol. XII, No. 3, 1920, pp. 65, 66; Stephens, 

 Trans. San Diego Soc. Nat. Hist., Vol. Ill, No. 4, 1921, p. 64. 



Coluber ftagellum piceus Stejneger & Barbour, Check List N. Amer. 

 Amph. Rept., 1917, p. 79; Van Denburgh & Slevin, Proc. Cal. 

 Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 28, 36, 52, 64. 



Description. — Head rather long, with flattened top, and 

 narrow rounded snout. Rostral plate large, high, hollowed 

 below, and bounded behind by internasal, anterior nasal, and 

 first labial plates. Plates on top of head are a pair of inter- 

 nasals, a pair of prefrontals, supraocular and part of upper 

 preocular of each side, a long frontal, and a pair of large 

 parietals. Anterior and posterior nasals distinct. Loreal 

 well developed. Preoculars normally two, but sometimes 



