23t) COLPBRID^. 



p. 133 (1876) ; Boetig. Ahh. Senck. Ges. xiii. 1883, p. 101 ; Be 



Betta, Atti 1st. Ve7i. (7) i. 1883, p. 934 ; Bedriaga, Atnph. et Rept. 



de Portug. p. 71 (1890) ; Camerano, Mon. Ofid. Itnl., Coluhr. p. 30 



(1891) ; Bouleng. Tr. Zool. 8oc. xiii. 1891, p. 149. 

 Fropidonotus oppelii, Boie, I. c. 



tessellatus, part., Wagl. Syst. Amph. p. 179 (1830). 



Natrix viperina, Bonctp. Faun. Ital. (1834) ; Gene. Mem. Ace. Torin. 



(2) i. 1839, p. 269, pis. ii. & iii. 

 Coluber viperinus, var. aurolineatus, Gervais, Ann. Sc. Nat. (2) vi. 



1836, p. 312. 

 Tropidonotu.s viperinus, part., ScJileg. Phys. Serp. ii. p. 325 (1837) ; 



Diim. ^- Bihr. vii. p. 560 (1854). 



(Corouella) tesselatus, JEichiv. N. Mim. Soc. Nat. Moscou, ix. 



1851, p. 440. 



chersoides vel ocellatus, Dtim. Sf Bibr. t. c. p. 562 ; Lataste, 



CR. Soc. Linn. Bord. 1874, p. clxxiii. 



Eye rather small. Eostral broader than deep, visible from above ; 

 nasal usually semidivided ; internasals as long as broad or longer, 

 subtriaugular, truncate in front, as long as the praefrontals ; 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 prseoculars ; two postoculars ; 

 temporals 1 -(- 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 ; subcaudals 47-72. 

 Grey, brown, or reddish above, with a black zigzag dorsal band and 

 a lateral series of black ocellar spots with a yeUow 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 yeUow 

 or red, checkered with black, or entirely black. 



Total length 850 millim. ; tail 170. 



Prance, Switzerland, Italy, Spain and Portugal, Barbary. 



A. Typical form. 



a-i. c? (V. 148; C. 69) & Tanaro Valley, Pied- Count M. G. Peracca 



yg. (V. 150 ; C. 58). mont. [P.]. 



c-d. Hgr. S (V. 151 ; C. ?) Sardinia. Count M. G. Peracca 



& $ (V. 156; 0.54). [P.]. 



e. Yg. (V. 148 ; C. 53). Albufera de Valeu- Lord Lilford [P.]. 



cia, Spain. 

 /. S (V. 151 ; C. 64). SeviUe. M. V. L. Seoane [P.]. 



g-i. S (V. 155 ; C. 56), $ Alemtejo, Portugal. Dr. H. Gadow [CI. 



(V. 151;C.47),&yg.(V. 



158 ; C. 58). 

 K-l. 6 (V. 157,151; C.61, Serra de Gerez, S. Dr. H. Gadow [C.]. 



61). Portugal. 



OT-«. Hgr. S (V. 152 ; C. Tangier. Mr. Eraser [CI. 



62) & hgr. § (V. 154; 



C53). 

 o-p. $ (V. 154 ; C 57) & Tangier. M. H. Vaucher TC]. 



yg. (V.157; C 51). 



