236 COLUBRID, 
eg (1876); Boettg. Abh. Senck, Ges, xiii..1883, p. 101; De 
etta, Atti Ist. Ven. (7) i. 1883, p. 934; Bedriaga, Amph. et Rept. 
de Portug. p.71 (1890) ; Camerano, Mon, Ofid. Ital., Colubr. p. 30 
(1891); Bouleng. Tr. Zool. Soe, xiii, 1891, p. 149. 
Tropidonotus oppelii, Bote, 1. ¢. 
tessellatus, Eats Wagl, Syst. Amph. p. 179 (1830). 
Natrix viperina, Bonap. Faun. Ital. (1834) ; Gené, Mem. Ace. Torin. 
(2) i. 1839, p. 269, pls. ii. & iii. 
parte Phi ger var, aurolineatus, Gervais, Ann. Sc. Nat. (2) vi. 
836, p 
To idonotus viperinus, part., Schley. Phys. Serp. ii. p. 325 (1887) ; 
Fe § Bibr. vii. p. 560 (1854 leg her: 
—_— Gcronella) ret "Biche. N. Mém. Soc, Nat. Moscou, ix. 
1851, p. 440. 
—— chersoides vel ocellatus, Dum. § Bibr. t. c. p. 562; Lataste, 
CR. Soc, Linn. Bord. 1874, p. elxxiii. 
Eye rather small. Rostral broader than deep, visible from above ; 
nasal usually semidivided ; internasals as long as broad or longer, 
subtriangular, truncate in front, as long as the prefrontals; frontal 
once and a half to twice as long as broad, as long as its distance from 
the end of the snout, shorter than the parietals; loreal as deep as 
long, or a little deeper; one or two preoculars; two postoculars ; 
temporals 14+2 or 1+3; seven upper labials, third and fourth 
entering the eye; four (rarely five) lower labials in contact with the 
anterior chin-shields, which are shorter than the posterior. Scales 
strongly keeled, of outer row smooth or feebly keeled, in 21 (rarely 
23) rows. Ventrals 147-160; anal divided ; subcandals 47-72. 
Grey, brown, or reddish above, with a black zigzag dorsal band and 
a lateral series of black ocellar spots with a yellow centre; a more or 
less distinct oblique dark band on the temple, and another on each 
side of the nape; labials yellow, with black sutures; belly yellow 
or red, checkered with black, or entirely black. 
Total length 850 millim.; tail 170. 
* France, Switzerland, Italy, Spain and Portugal, Barbary. 
A. Typical form. 
a-b. 3 (V. 148; C. 59) & Tanaro Valley,Pied- Count M.G, Peracea 
yg. (V. 150; . O 58). mont. [PA. 
e-d. Hgr. d (V.151; C.?) Sardinia. Count M. G. Peracca 
& 9 (V. 186; 0. 54). (P.} 
e. Yg. (V. 148; Oo. 53). Albufera de Valen- Lord Lilford [P.]. 
cia, Spain. 
f 3 (V. 151; C.'64), Seville. e M. V.L. Seen 
i. 5 (V. 155; C. 56), 2 Alemtejo, Portugal. Dr. H. Gadow [C.), 
V. 151; C. 47), & yg. (V. 
58; C. 58 
kl. 3 (V. 167, 151; C.61, Serra de Gerez, 8. Dr. H. Gadow [C.]. 
61). Portugal. 
m-n. Hgr. dg (V. 152; OC. Tangier. Mr. Fraser [€.]. 
ne 5), her. 2 (V. 154; ; 
o-p. 9 (V. ag C. 57) & Tangier. M. H. Vaucher [C.). 
ye. (V. 157; O. 51). 
= — _— 
