632 12. BOIDA 
Nat. Mus., No. 1, 1875, p. 43; Core, Bull. U.S. Nat. Mus., No. 
32, 1887, p. 65; STEJNEGER, Proc. U. S. Nat. Mus., Vol. XII, 1889, 
p- 98; STEJNEGER, Proc. U. S. Nat. Mus., 1891, p. 512-515. 
Charina trivirgata Garman, Mem. Mus. Compr. Zool. Cambr., Vol. 
VIII, No. 3, 1883, p. 131 (part); BoutencEr, Cat. Snakes Brit. 
Mus., Vol. 1, 1893, p. 129 (part). 
Lichanura orcutti STEJNEGER, Proc. U. S. Nat. Mus., Vol. XII, 1889, 
p- 96, fig. 1 (type locality, Colorado Desert, San Diego County, 
California); Sreynecer, West Amer. Scientist, Vol. VI, No. 46, 
1889, p. 83; STEJNEGER, Proc. U. S. Nat. Mus., Vol. XIV, 1891, 
P- 513-515; Cope, Proc. U. S. Nat. Mus., Vol. XIV, 1892, p. 592; 
Core, Report U. S. Nat. Mus., for 1898, 1900, p. 726, fig. 147; 
Werner, Archiv fur Naturgeschichte, Vol. 87, 1921, Abt. A, 
Heft 7, p. 260. 
Lichanura simplex SYEJNEGER, Proc. U. S. Nat. Mus., Vol. XII, 1889, 
Pp. 97, fig. 2 (type locality, San Diego, Cal.) 
Lichanura trivirgata Werner, Archiv fur Naturgeschichte, Vol. 87, 
1921, Abt. A, Heft 7, p. 259 (part). 
Description.—Top of head nearly flat, covered with small 
smooth scales. Snout long, with a more or less prominent 
high rostral plate. Superior labials 13 or 14, high anter- 
iorly, but with tips sometimes cut off and appearing as small 
scales below loreals. Inferior labials 15 to 17. Loreals 
usually three, but their number not at all constant. About 
seven to 10 scales encircling eye. Scales on body smooth, 
imbricate, nearly as wide as long, and arranged in from 35 
to 43 longitudinal rows, lowest row on each side formed of 
larger scales. Gastrosteges narrow, varying in number from 
220 to 242. Urosteges varying in number from 38 to 48; 
in a single series. Spurs small, but easily seen at each side 
a little in front of anus. 
The color above is light bluish or brownish gray or deep 
drab, with or without three more or less indefinite reddish 
or yellowish brown longitudinal bands. The middle one of 
these bands originates between the eyes, while the others 
arise on the temples. All or none of these bands may extend 
