_ 54, zamenis, : 379 
54. ZAMENIS. 
Hemorrhois, Bote, Isis, 1826, p. 982, and 1827, p. 588 (nom. nud.) ; 
Eichw. Faun. Casp.-Caue. p. 113 (1841). 
Tyria, .» Fitzing. N. Class. Rept. p. 29 (1826). 
Zamenis, part., Wagl. Syst. Amph. p. Fas (1830) 
Periops, Wagl. l. c. p. 180, Dum. § Bibr. Erp. Gen. vit p- 674 (1854); 
Jan, pod sist. high 59 (1863), 
Coluber, ae 
Beasasoplls, § Bibr. t. p. “683; Giinth. Cat. Col. Sn. I 101 
1858) ; Jan, 1. c. p. 65: Gtinth. Rept. Brit. Ind. p. 252 (1864) ; 
ocourt, Miss. Sc. Mex., Rept. p. 663 (1888); ouleng. Faun. 
Ind., pees ()- 
Baird § Gir. Cat. N. Am. Rept. tg (1853) ; Bocourt, 
op. of 'p. 697 (1890) ; Cope, Proc. U.S. Nat. Mus. xiv. 1892, 
Mosticophis, Baird § Gir. 2. €. p. 98; Jan, 1. ¢. p. 64. 
Bee eo ely . 104; Jan, l. ce. p.58; Bocourt, 1. e. 
p- 660 (1888) ; ie 68 
Coryphodon, part. tbr. t.c. p. 180; Giinth. Cat. p. 107 ; 
lan, l. c. p. 3.” 
Herpetodryas, Dum. § Bibr. t.c. p. 203 ; Giinth. Cat. p. 113 ; 
Teche pe” % . 
Septal, part. Dum. § Bibr. t. c. p. 528. 
fag ag Cope, Proc. Ac. Philad. 1860, p. 563 ; Giinth. Rept. Brit. Ind. 
pilmothyre, Cope, 1.¢. p.568. 
re = iy, sae As. Soc. Beng. xxix. 1860, p. 114. 
sega Tate: Ac. Philad. 1862, p. 338. 
blabes, Giinth. Ann. & Mag. N.H. (3) xv. 1865, 
whet ar Jan, in De Filippi, Viagg. Pers. 356 (1865). 
chi Cope, Proc. Am. Philos. Soc. xxiii. 188 “ad 491. 
Tevue ius, part., Bocourt, op. cit. p.715 (1890). 
Maxillary teeth 12 to 20, increasing in size posteriorly, forming 
a continuous series or the two last separated from the others by a 
very narrow interspace; mandibular teeth subequal, or anterior 
slightly enlarged. Head elongate, distinct from neck; eye mode- 
rate or large, with round pupil; usually one or more suboculars. 
Body elongate, cylindrical; scales smooth or feebly keeled, with 
apical pits, in 13 to 43 rows; ventrals rounded or with an ohtase 
lateral keel. Tail moderate or long; subcaudals in two rows. 
Europe; Asia; North Africa; Senegambia; North and Central 
America. 
As observed by Dr. Giinther in 1864 (Rept. Brit. Ind. p. 252), 
the species of this genus xfford a complete transition from the 
“Corypbodont” dentition as exemplified by Z. korros or Z. con- 
strictor to the somewhat ill-defined “ Diacranterian ” type as shown 
by Z. gemonensis, the skull of which is here figured. 
