808 13. COLUBRIDZ 
When disturbed, they swam boldly out into open water or 
sought the bottom and hid themselves under the rocks. 
Though not in the true sense of the word water snakes, the 
various Euteni@ are all thus quite aquatic in their habits.* 
183. Thamnophis eques (Reuss) 
WHITE-BELLIED GARTER SNAKE 
Coluber eques Reuss, Mus. Senckenberg. Abh., Vol. I, 1834, p. 152, 
pl. 8, fig. 2 (type locality, Mexico). 
Eutainia dorsalis Barrp & Girarp, Cat. N. Amer. Rept., Pt. 1, Serpents, 
1853, p- 31 (type locality, Rio Grande, Texas). 
Eutenia dorsalis Core, Bull. U. S. Nat. Mus., No. 1, 1875, p. 41; Cope, 
Proc. U. S. Nat. Mus., Vol. XIV, 1892, p. 663. 
Eutenia ornata Yarrow, Rept. U. S. Expl. Surv. W. rooth Merid., 
Vol. V, 1875, pp. 550, 553; YARROW, Bull. U. S. Nat. Mus., No. 
24, 1883, p. 122 (part). 
Eutenia cyrtopsis Kennicort, Proc. Acad. Nat. Sci. Phila., 1860, p. 
333 (type localities, Rinconada, Coahuila, Mexico, Durango, 
Gila River); Cope, Proc. Acad. Nat. Sci. Phila., 1866, p. 306; 
Core, Rept. U. S. Expl. Surv. W. tooth Merid., Vol. V, 1875, 
p- 546; Cope, Bull. U. S. Nat. Mus., No. 1, 1875, p. 41; Core, 
Bull. U. S. Nat. Mus., No. 17, 1880, p. 23; Cracin, Bull. Wash- 
burn Laborat., Vol. I, 1884, p. 8; Core, Bull. U. S. Nat. Mus., 
No. 32, 1887, p. 73; Cope, Proc. U. S. Nat. Mus., Vol. XIV, 1892, 
p- 656; Core, Report U. S. Nat. Mus., for 1898, 1900, p. 1049; 
Bailey, N. Amer. Fauna, No. 25, 1905, pp. 35, 48. 
Thamnophis cyrtopsis var. cyclides Cope, Proc. Acad. Nat. Sci. Phila., 
1861, p. 299 (type locality, “Cape St. Lucas,” very improbable). 
Tropidonotus collaris Jan, Arch. Zool. Anat. Phys., Vol. II, 1865, p, 
209; JAN, Iconographia degli Ofid., Vol. II, 25, 1867, pl. V, fig. 2. 
Eutenia cyrtopsis ocellata Core, Bull. U. S. Nat. Mus., No. 17, 1880. 
p- 22 (type locality, Helodes, Texas); Cope, Proc. U. S. Nat. 
Mus., Vol. XIV, 1892, p. 657. 
Eutenia pulchrilatus Cope, Proc. Am. Philos. Soc., 1885, p. 174 (type 
locality, “uncertain but probably Guanajuato,” Mexico); 
Cope, Bull. U. S. Nat. Mus., No. 32, 1887, p. 73; Cope, Report 
U. S. Nat. Mus. for 1898, 1900, p. 1062. 
*Yarrow and Henshaw, Ann. Rep. Chief of Engineers, Surv. W. 1ooth Merid., Append, 
NN, 1878, p. 217. 
