42. CHILOMENISCUS 869 
There is a small posterior nasal, sometimes merged with 
the anterior. The loreal plate normally is absent, rarely 
present. The scales are in 13 rows, smooth and with apical 
pits. The anal plate is divided, and the urosteges are in two 
series. The eye is small, with round pupil. Maxillary 
teeth grooved, the last two larger. 
Our three snakes of this genus may be distinguished by 
the following. 
Synopsis OF SPECIES 
Back crossed by a series of dark bands or rings. 
b.—Scales of white dorsal area without central dark spots. 
C. cinctus.—p. 869. 
a. 
b.—Scales of dorsal white interspaces each with a central 
dark spot. 
C. punctatissimus.—p. 872. 
a.—No transverse dark bands or rings; brownish or yellow- 
ish with brown dots on individual scales. 
C. stramineus.—p. 874. 
197. Chilomeniscus cinctus Cope 
BanDED BurROWING SNAKE 
Chilomeniscus cinctus Cope, Proc. Acad. Nat. Sci. Phila., 1861, p. 303 
(type locality, Guaymas, Gulf of Cal fornia, Mexico); Corr, 
Bull. U. S. Nat. Mus., No. 1, 1875, p. 35; Yarrow, Bull. U. S. 
Nat. Mus., No. 24, 1883, p. 86; BeLtpinc, West Amer. Scientist, 
Vol. III, No. 24, p. 98; Cope Bull. U. S. Nat. Mus., No. 32, 1887, 
p- 82; Cope Report U.S. Nat. Mus. for 1898, 1900, p- 952; Brown, 
Proc. Acad. Nat. Sci. Phila., 1901, p. 85; Dirmars, Reptile Book, 
1907, p. 373; Van DensurcH & Stevin, Proc. Cal. Acad. Sci. 
Ser. 4, Vol. 3, 1913, p. 410; GrinneLt & Camp, Univ. Cal. Publ. 
Zool., Vol. 17, No. 10, 1917, p. 182; Van Denspurcu & SLeEvin, 
Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 52, 70. 
Chilomeniscus ephippicus Core, Proc. Acad. Nat. Sci. Phila., 1867, p. 
85 (type locality, Owen’s Valley, California); Covers, Surv. 
W. tooth Merid., Vol. V, 1875, p. 625, pl. XVIII, figs. 3, 3a; Cope, 
Bull. U. S. Nat. Mus., No. 1, 1875, p- 35; Yarrow, Bull. U. S. 
