206 COLTTBEID^. 



No vertebral stripe H. hammondii. 



A narrow yellow dorsal stripe ; belly yellowish 



white I. marcianus. 



II. Lateral stripe running along the third, or third and fourth 



rows of scales ; scales in 21 rows. 



Usually seven upper labials K. radix. 



Eight upper labials L. macrostemma. 



III. Lateral stripe running along the second, third, and fourth 

 rows of scales ; scales in 19 rows . M. butleri. 



A. Forma typica. 



Coluber ordinatus, Li7m. S. N'. i. p. 379 (1766) ; Cntesby, ^,'at. Hist. 

 Carolina, ii. pi. liii. (1771) ; Marl. Med. Phys. lies. p. 113 (1835). 



ibibe, Latr. liept. iv. p. 70 (1802) ; Daud. Rept. vii. p. 181 



(1803). 



bipimctatus, Latr. t. c. p. 85. 



Tropidonotus ordinatus, Bote, Isis, 1827, p. 535; Holbr. N. Am. 



Eept. iv. p. 45, pi. xii. (1842). 

 bipunctatus, part., Schley. P/iys. Serp. ii. p. 320 (1837) ; Dum. ^ 



Bibr.YU.-p. 582 (1854). 

 Eutaiiiia ordinata, Baird 4' Gir. Cat. N. Am. Rept. p. 32 (1853) 

 ? Ti'opidonotus jauresi, Dvni,. ^- Bibr. t. c. p. 00(3. 

 Tropidonotus ordinatus, part., Gi'inth. Cat. p. 73 (1858). 

 Eutsenia sirtalis, subsp. ordinata. Cope, Wheeler^s Rep. U.S. Surv. 



W. 100th Mer. v. p. 546 (1875). 

 sirtalis graminea, Cope, Proc. U.S. Nat. Mus. xi. 1889, p. 399 



Seven upper labials, third and fourth entering the eye. Scales 

 in 19 rows, outer row keeled. Ventrals 137-152; subcaudals 54- 

 79. Olive or green above, uniform or with black spots disposed 

 quincuncially ; stripes absent or very indistinct ; greenish white 

 interiorly, with a more or less distinct black spot at the outer end 

 of the ventrals. 



United States east of the Mississippi. 



a. $ (V. 137 ; C. ?). Georaia. Smithsonian Instit. [P.]. 



b-f, y. 6 (V. 150 ; C. 68) & N. America. 



2 (V. 147, 142, 142, 142, 



141 ; 0. 63, 54, 53, 54, 71). 



B. Yar. sirtalis. 



Cokber sirtalis, Linn. S. N. i. p. 383 (1766) ; Catesby, Nat. Hist. 

 Carol, ii. pi. Ii. (1771) ; Daud. Re^yt. vii. p. 146 (1803) ; Harl. 

 Med. Phys. Res. p. 116 (1835) ; Storer, Rejj. Fish. ^- Rept. Mass. 

 p. 221 (1839). 



parietalis, Say, Lonys E.vped. Rocky M. i, p. 186 (1823) ; 



Harl. I. c. 



Tropidonotus parietalis, Boie, Isis, 1827, p. 535 ; Ilalloxo. Sityreave's 



Exped. ZuniSi- Color. R. p. 139, pi. xvii. (1853). 

 bipunctatus, part., Schley. Phys. Serp. ii. p. 320 (1837); Bum. 



8,- Bibr. vii. p. 582 (1854). 

 sirtaUs, Holbr. N Atn. Herp. iv. p. 41, pi. xi. (1842) ; Wied, 



N. Acta Ac. Leop. Carol, xxxii. i. 1865, p. 87; Garm, N.Am. 



Rept. p. 25, pi. iii. iig. 3 (1883). 



