33. PITUOPHIS 



160. Pituophis catenifer annectens (Baird & Girard) 



San Diegan Gopher Snake 



Plate 16 



Pituophis annectens Baird & Girard, Cat. N. Amer. Rept., Pt. I, 1853, 



p. 72 (type locality, San Diego, California). 

 Pityophis sayi sayi Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, p. 



105 (part). 

 Pityophis sayi bellona Streets, Bull. U. S. Nat. Mus., No. 7, 1877, 



p. 40; Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, p. 106 (part); 



Cope, Report U. S. Nat. Mus., for 1898, 1900, p. 872 (part). 

 Pityophis catenifer Cope, Proc. Acad. Nat. Sci. Phila., 1883, p. 29; Cope, 



Report U. S. Nat. Mus., for 1898, 1900, p. 876 (part). 

 Pituophis catenifer Van Denburch, Occas. Papers Cal. Acad. Sci., V, 



1897, p. 195 (part); Grinnell & Grinnell, Throop Inst. Bull., 



No. XXXV, 1907, p. 46, fig. 20; Grinnell, Univ. Cal. Publ. Zool. 



Vol. 5, No. I, 1908, p. 165; Van Denburch, Proc. Cal. Acad. 



Sci., Ser. 4, Vol. Ill, 1912, pp. 149, 150; Atsatt, Univ. Cal. Publ. 



Zool., Vol. 12, No. 3, 1913, p. 43; Van Denburch & Slevin, Proc. 



Cal. Acad. Sci., Ser. 4, Vol. IV, 1914, p. 141; Ruthlinc, Copeia, 



1916, No. 37, p. 91; Stephens, Trans. San Diego Soc. Nat. Hist., 



Vol. Ill, No. 4, 1921, p. 64. 

 Pituophis catenifer deserticola Van Denburch & Slevin, Proc. Cal. 



Acad. Sci., Ser. 4, Vol. IV, 1914, p. 142. 

 Pituophis catenifer catenifer Grinnell & Camp, Univ. Cal. Publ., Zoo!., 



Vol. 17, No. 10, 1917, p. 193 (part); Cowles, Journ. Entomol. & 



Zool., Pomona College, Vol. XII, No. 3, 1920, p. 66. 

 Pituophis catenifer annectens Van Denburch & Slevin, Proc. Cal. Acad. 



Sci., Ser. 4, Vol. IX, 1919, p. 216 (part); Van Denburch, Proc. 



Cal. Acad. Sci., Ser. 4, Vol. X, No. i, 1920, p. 17, pi. i, fig. 2; Van 



Denburch & Slevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, 



pp. 52, 67; Nelson, Mem. Nat. Acad. Sci., Vol. XVI, 1921, pp. 



114, 130. 



Descriftion. — Head somewhat flat-topped, with snout 

 projecting and rather narrow. Temporal regions not swol- 

 len. Rostral plate very large, prominent, not very narrow, 

 often recurved between internasals on top of snout j bounded 

 behind by internasal, anterior nasal, and first labial plates. 

 Plates on top of head are a pair of internasals, a variable 



