874 13. COLUBRID 
199. Chilomeniscus stramineus (Cope) 
Dotrrep BuRROWING SNAKE 
Chilomeniscus stramineus Cope, Proc. Acad. Nat. Sci. Phila., 1860, p. 339 
(type locality, Cape St. Lucas, Lower California, Mexico); 
Cope, Proc. Acad. Nat. Sci. Phila., 1861, p. 302; Cope, Bull. U. S. 
Nat. Mus., No. 1, 1875, pp. 35, 92; Yarrow, Bull. U.S. Nat. Mus., 
No. 24, 1883, pp. 13, 86; Cope, Bull. U.S. Nat. Mus., No. 32, 1887, 
p-. 81; Bexpinc, West. Amer. Scientist, Vol. III, No. 24, p. 98; 
Cope, Proc. U. S. Nat. Mus., Vol. XIV, 1892, p. 594 (part); Bov- 
LENGER, Cat. Snakes Brit. Mus., Vol. II, 1894, p. 573 (part); VAN 
Densurcu, Proc. Cal. Acad. Sci., Ser. 2, Vol. §, 1895, p. 138; 
Mocauarp, Nouv. Arch. Mus. Hist. Nat., Ser. 4, Vol. 1, 1899, 
p- 316; Cope, Report U.S. Nat. Mus. for 1898, 1900, p. 949; STEJ- 
NEGER & Barsour, Check List N. Amer. Amph. Rept., 1917, 
p- 94, Wan DensurcH & Stevin, Proc. Cal. Acad. Sci., Ser. 4, 
Vol. XI, 1921, p. 52; Netson, Mem. Nat. Acad. Sci., Vol. XVI, 
1921, pp. 114, 115; Terron, Mem. y Rev. Soc. Cient. Antonio 
Alzate, Vol. 39, 1921, p. 164. 
Carphophis straminea Garman, Mem. Mus. Compr. Zool., Cambr., 
Vol. VIII, No. 3, 1883, pp. 99, 166; Garman, Bull. Essex Inst., 
Vol; XVI; Now1,\p. 32: 
Chilomeniscus stramineus stramineus Cope, Proc. U. S. Nat. Mus., 
Vol. XIV, 1902, p. 595. 
Description ——Head rather wide, little distinct from 
neck. Snout broad, rounded, greatly depressed, pointed in 
profile. Rostral plate very large, broad, prominent, exten- 
sively reverted on upper surface of snout, usually not reach- 
ing prefrontals, bounded behind by the first supralabial and 
a large plate corresponding to the internasal and _nasals 
merged. Plates on top of head are the naso-internasals, a 
pair of prefrontals, a frontal, supraocular of each side, and 
a pair of rather small parietals. Posterior nasal small, some- 
times merged with anterior nasal and internasal. No loreal. 
One preocular. Two postoculars. Temporals one followed 
by one or two. Supralabials seven, third and fourth reach- 
ing eye. Inferior labials usually eight, sometimes seven, 
