802 13. COLUBRIDE 
182. Thamnophis sirtalis infernalis (Blainville) 
PaciFic GARTER SNAKE 
Plate 86 
Coluber infernalis Buatnvitte, Nouv. Ann. du Mus., Vol. IV, 1835, p. 
291, pl. XXVI, figs. 3-3a (type locality, California). 
Eutainia infernalis Barro & Girarp, Cat. N. Amer. Rept., Pt. 1, Serp., 
1853, p. 26; Girarp, U. S. Explor. Exped., Herp., 1858, p. 148, 
pl. XIV, figs. 11-16; Bocourr, Bull. Soc. Zool. Fr., 1892, p. 40 
(part). 
Eutenia sirtalis tetratenia Corr, U. S. Explor. Surv. W. tooth Merid., 
Vol. V, 1875, p. 546 (part) (no locality); Townsenp, 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). 
Eutenia sirtalis parietalis Yarrow & HensHaw, Ann. Rep. Chief of 
Engineers for 1878, Surv. W. 1ooth Merid., Appendix NN, 1878, 
p. 216; Cope, Proc. U. S. Nat. Mus., Vol. XIV, 1892, p. 664 (part); 
Core, Report U.S. Nat. Mus., 1898, 1900, p. 1077 (part); Dirmars, 
Reptile Book, 1907, p. 237 (part). 
Tropidonotus sirtalis var. parietalis GARMAN, Mem. Mus. Compr. Zool., 
Vol. VIII, No. 3, 1883, pp. 25, 139 (part). 
Tropidonotus ordinatus var. infernalis BouLeNceR, Cat. Snakes Brit. 
Mus., Vol. I, 1893, p. 207 (part). 
Thamnophis parietalis SrejNEGER, N. Amer. Fauna, No. 7, 1893, p. 
214; Van Densurcu, Occas. Papers Cal. Acad. Sci., Vol. V, 1897, 
p- 200 (part); Grinnett & Grinnett, Throop Inst. Bull., No. 
XXXV, 1907, p. 48. 
Thamnophis sirtalis parietalis RutHven, Bull. U. S. Nat. Mus., No. 61, 
1908, p. 166 (part); GrinneLt & Camp, Univ. Cal. Publ. Zool., 
Vol. 17, No. 10, p. 181 (part); Sreynecer & Barsour, Check 
List N. Amer. Amph. Rept., 1917, p. 103 (part). 
Thamnophis sirtalis infernalis Van DensurcH & S tevin, Proc. Cal. 
Acad. Sci., Ser. 4, Vol. VIII, No. 6, 1918, p. 198; Van DENBURGH 
& Sievin, 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 
