COLUBRIDA, — CX. 195 
rough bark. Var. confinis Baird & Girard is ashy gray, with 45 
dark chocolate blotches on back, their edges faintly darker; two 
smaller series on side; a dark band between eyes; belly blotched. 
8. Ind. (Brookville, E. R. Quick) to 8. C. and 8S. W. 
ce. Vertical plate broader than long. 
558. C. vulpinus (Baird & Girard). Fox Swaxz. Light 
brown, with quadrate, chocolate-colored blotches; vertical plate 
broader than long. Scales 25. V. P. 200 to 210. L. 60. Mass. 
to Kan. and N. (Lat., fox-like.) 
6b. Scales in 29 rows. 
d. Vertical plate longer than broad. 
559. C. emoryi (Baird & Girard). Ashy gray with transverse 
brown blotches ; vertical plate elongated; 6 or 8 median rows of 
scales only keeled. Scales 29. V. P. 210 to 220. L. 40 to 50. 
Kan. to Texas (extralimital). 
dd. Vertical plate as broad as long. 
560. C. lindheimeri (Baird & Girard). Back and sides with 
black blotches, the interspaces paler; scales edged with white; 
greenish white below; centres of shields slate color ; about 9 rows 
of scales obscurely keeled. Scales 29. V. P. 225 to 235. S, II. 
to Texas. (This is identical with C. obsoletus.) 
aa. Body with 4 longitudinal brown stripes. 
561. C. quadrivittatus (Holbrook). CHIcKEN SNAKE. Green- 
ish yellow, with two brownish stripes on each side; straw-color ~ 
below. Scales 27, only 5 to 8 rows keeled. V. P. 230 to 245. 
Va. to Fla. (Lat., four-striped.) 
280. OPHEODRYS Fitzinger. (é¢us, snake; dpis, oak.) , 
562. O. estivus (L.). Green Snake. Head conical, neck 
very small; bright clear green, yellowish below. Scales 17. V. P. 
150 to 165 ; tail more than 4 of body. L. 30. Southern N. J. to 
Ind. and §., abundant S.; a most exquisite little creature, often 
climbing bushes over water. 
281. LIOPELTIS Fitzinger. (Aeios, smooth; wéAry, shield.) 
médtm, shield.) 
568. L. vernalis (DeKay.) Grass Snake. Head elongate, 
neck slender; eyes very large; uniform deep green (bluish in 
spirits), yellowish below; tail not quite $ of length. Scales 15. 
V. P. 125 to 140. L, 20. E, U. S., chiefly N.; @ beautiful 
species. 
282. BASCANION Baird & Girard. (Sacxavos, malignant.) 
564, B. constrictor (L.). Buacx Snake. Buive Racer. 
Lustrous pitch black, greenish below, chin and throat white; young 
