818 13. COLUBRID 
Eutenia elegans elegans Brown, Proc. Acad. Nat. Sci. Phila., 1903, p. 
288 (part). 
Eutenia elegans Ditmars, Reptile Book, 1907, p. 225, pls. LXVI, figs. 
By b>) Llp LOCUS hips Te 
Eutenia elegans infernalis Drrmars, Reptile Book, 1907, p. 227, pl. 
TOXGEX, figs 2. 
Thamnophis ordinoides elegans RutTHVEN, Bull. U. S. Nat. Mus., No. 61, 
1908, p. 138 (part); SreyNEGER & Barzour, Check List N. Amer. 
Amph. Rept., 1917, p. 102 (part); GrinneLL & Camp, Univ. Cal. 
Publ. Zool., Vol. 17, No. 10, 1917, p. 180 (part). 
Thamnophis ordinoides atratus Van DenBurGH & Stevin, Proc. Cal. 
Acad. Sci., Ser. 4, Vol. VIII, No. 6, 1918, p. 224, pl. 9. 
Description —Head distinct from neck, flat-topped, with 
rather narrow, rounded snout, and temporal regions some- 
times swollen. Eye of moderate size. Rostral large, 
bounded behind by internasal, anterior nasal, and first labial 
plates. Plates on top of head: a pair of internasals, a pair 
of prefrontals, supraocular of each side, a frontal, and a 
pair of parietals. Anterior and posterior nasals distinct. One 
loreal. One or rarely two preoculars and from two to five 
(normally three) postoculars. Temporals normally one 
followed by two, sometimes 1+1, 1+3, or 2+2. Eight, 
or rarely seven, nine, or 10, superior and 10, or rarely eight, 
nine or 11 inferior labials, fifth or sixth superior and fifth, 
sixth or seventh inferior usually largest, fourth and fifth or 
third and fourth superior usually reaching eye, first pair 
of inferior meeting on median line. Two pairs of genials, 
posterior equal to or little longer than anterior. Scales on 
body in 19 or 21 rows. Anal plate undivided. Gastrosteges 
varying in number from 140 to 172, males having from 146 
to 172, females from 140 to 168. Urosteges in two series of 
from 52 to 93, males having from 63 to 93, females from 
52 to 86. 
The head is brown or olive above, never red. The 
labials are yellow or olive. The chin and throat are yellow 
