802 13. COLUBRIDJS 



182. Thamnophis sirtalis infernalis (Blainville) 



PACIFIC GARTER SNAKE 



Plate 86 



Coluber Infernalis BLAINVILLE, Nouv. Ann. du Mus., Vol. IV, 1835, p. 

 291, pi. XXVI, figs. 3-ja (type locality, California). 



Eutainia infernalis BAIRD & GIRARD, Cat. N. Amer. Kept., Pt. I, Serp., 

 1853, p. 26; GIRARD, U. S. Explor. Exped., Herp., 1858, p. 148, 

 pi. XIV, figs. 11-16; BOCOURT, Bull. Soc. Zool. Fr., 1892, p. 40 

 (part). 



Eutttnia sirtalis tetratttnia COPE, U. S. Explor. Surv. W. tooth Merid., 

 Vol. V, 1875, p. 546 (part) (no locality); TOWNSEND, Proc. U. S. 

 Nat. Mus., Vol. 10, 1887, p. 240; COPE, Proc. U. S. Nat. Mus., 

 Vol. XIV, 1892, p. 664 (Puget Sound, Wash., and Pitt River, 

 Cal.) (part); COPE, Report U. S. Nat. Mus. for 1898, 1900, p. 

 1080 (part). 



Eutttnia sirtalis parietalis YARROW & HENSHAW, Ann. Rep. Chief of 

 Engineers for 1878, Surv. W. icoth Merid., Appendix NN, 1878, 

 p. 216; COPE, Proc. U. S. Nat. Mus., Vol. XIV, 1892, p. 664 (part); 

 COPE, Report U. S. Nat. Mus., 1898, 1900, p. 1077 (part); DITMARS, 

 Reptile Book, 1907, p. 237 (part). 



Tropidonotus sirtalis var. parietalis CARMAN, Mem. Mus. Compr. Zool., 

 Vol. VIII, No. 3, 1883, pp. 25, 139 (part). 



Tropidonotus ordinatus var. infernalis BOULENGER, Cat. Snakes Brit. 

 Mus., Vol. I, 1893, p. 207 (part). 



Thamnophis parietalis STEJNEGER, N. Amer. Fauna, No. 7, 1893, p. 

 214; VAN DENBURGH, Occas. Papers Cal. Acad. Sci., Vol. V, 1897, 

 p. 200 (part); GRINNELL & GRINNELL, Throop Inst. Bull., No. 

 XXXV, 1907, p. 48. 



Thamnophis sirtalis parietalis RUTHVEN, Bull. U. S. Nat. Mus., No. 61, 

 1908, p. 166 (part); GRINNELL & CAMP, Univ. Cal. Publ. Zool., 

 Vol. 17, No. 10, p. 181 (part); STEJNEGER & BARBOUR, Check 

 List N. Amer. Amph. Rept., 1917, p. 103 (part). 



Jhamnophis sirtalis infernalis VAN DENBURGH & SLEVIN, Proc. Cal. 

 Acad. Sci., Ser. 4, Vol. VIII, No. 6, 1918, p. 198; VAN DENBURGH 

 & SLEVIN, Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, p. 29. 



Description. Head distinct from neck, flat-topped, 

 with narrow rounded snout, and temporal regions some- 

 times swollen. Eye large. Rostral plate large, bounded 



