10. TEOPIDONOTUS. 239 



Natrix usta, Cope, Proc. U.S. Nat. Mm. xi. 1889, p. 392. 



compressicauda, Cope, I. c, and xiv, 1892, p. 669. 



compressicauda bivittata, Cope, II. cc. 



Allied to T. validus and T, clarkii. Frontal aliield broad ; loreal 

 longer than deep ; one prae- and two or three postoculars ; a single 

 anterior temporal ; eight upper labials, fourth and fifth entering 

 the eye. Scales in 19 or 21 rows, strongly keeled, outer row feebly 

 keeled. Ventrals 126-137 ; anal divided ; subcaudals 66-81. Tail 

 compressed at the base. Dark greyish brown above, much spotted 

 and dotted with yellowish, or with blackish markings ; belly brown 

 or rod, with yellow spots, or yellow with two lines of black blotches. 



Florida. 



40. Tropidonotus septemvittatus. 



Coluber septemvittatus, Say, Joum. Ac. Philad. iv. 1825, p. 240; 

 Harl. Med. Phys. Res. p. 118 (1835). 



Tropidonotus leberis, Holhr. N. Am. Herp. iv. p. 49, pi. xiii. (1 842) ; 

 Dehay, N. Y. Faun., Rept. p. 45, pi. xi. fig. 23 (1842) ; Bum. * 

 Bibr. vii. p. 579 (1854) ; Oiintk. Cat. p. 78 (1858) ; Jan, Arch. 

 Zool. An. Phys. iii. 1865, p. 229, and Icon. Gen. 27, pi. v. fig. 2 

 (1868) ; Garm. N. Am. Rept. p. 27, pi. ii. fig. 1 (1883). 



Kegina leberis, Baird ^ Gir. Cat. N. Am. Uept. p. 45 (1853) ; H. 

 Garm. BiiU. Illin. Lab. iii. 1892, p. 272. 



Natrix leberis. Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 668. 



Head small, scarcely distinct from neck. Eye rather small. 

 Eostral broader than deep, visible from above ; nasal semidivided ; 

 internasals small, as long as broad, as long as or a little shorter than 

 the praefrontals ; frontal hardly once and a half as long as broad, as 

 long as or a little longer than its distance from the end of the snout, 

 shorter than the parietals ; loreal as long as deep or a little longer ; 

 two prse- and two postoculars ; temporals 1+2; seven upper labials, 

 third and fourth entering the eye ; five lower labials in contact 

 with the anterior chin-shields, which are shorter than the posterior. 

 Scales in 19 rows, all- strongly keeled. Ventrals 140-151 ; anal 

 divided ; subcaudals 64-86. Olive-brown above, with or without 

 three darker dorsal stripes ; a yellowish lateral streak along the 

 first and second rows of scales ; upper lip yellowish ; belly yellowish, 

 with four brown stripes, the two median of which may be broken 

 up into spots. 



Total length 690 millim. ; tail 160. 



United States east of the Mississippi and Texas. 



a-h Hgr S (V. 143 ; 0. 77) Bloomington, Indiana. C. Bollman, Esq. 



& $ (V. 146; C. 67). [0.]. 



e-q. S (V. 140, 146, 145 ; 0. N. America. 



79, 73, ?), S (V. 151 ; 0. 



73), & yg. (V. 141 ; C. 67). 



