60. COLUBER. 65 
neck with four interrupted black stripes; a dorsal series of O0- 
shaped black markings, and a series of smaller markings on each 
side ; lower parts yellow, posteriorly with squarish black blotches. 
Total length 1500 millim.; tail 230. 
Mexico and Guatemala. 
a. 3 (V. 244; C. 69). Duenias, Guatemala. O. Salvin, Esq. [C.]. 
41. Coluber scalaris. 
Coluber scalaris, Schinz, Cuv. Thierr. ii. p. 123 (1822) ; ore, Isis, 
1827, p- 536. 
he rmanni, Desmarest, Faune Franc., Rept. pl. xix. (1826) ; 
Lesson, Act. ‘Soc. Linn. Bord. xii. 1841, p. 58. 
Rhinechis agassizii, Michahelles, in Wa cugl. Icon. Amph. pl. xxv. 
(1833). 
Coluber agassizii, Dugés, Ann. Se. Nat. (2) iii. 1835, p. 159. 
Xenodon michahelles, Schley. Phys. Serp. 1. p. 92 (1837). 
Rhinechis scalaris, Bonap. Icon. Faun, Ital. (1838) ; Dum. § Bibr. 
Vii. r 227 (1854) ; Giinth. Cat. p. 85 (1858) ; Jan, Icon. Gién. 20, 
pl. 1. (1867) ; De Betta, Faun. Ital., Rett. Anf. p. 89 (1874) 
Schreib. Herp. Eur. p. 290 (1875) ; ” Bedria ga, Amph. § Rept. 
Portug. p. 73 (1889). 
Snout strongly projecting ; rostral deeper than broad, forming an 
acute angle posteriorly, wedged in between the internasals, the 
pertion visible from above nearly as long as its distance from the 
frontal; internasals shorter than the prefrontals; frontal about 
once and one third as long as broad, as long as or shorter than its 
distance from the end of the snout, nearly as long as the parietals ; 
loreal longer than deep; one prie- and two or three postoculars ; 
temporals 2+3 or 2+4; seven or eight upper labials, fourth or 
fourth and fifth entering the eye: four or five lower labials in 
contact with the anterior chin-shields, which may be either longer 
or shorter than the posterior. Scales smooth, in 27 (rarely 25 or 29) 
rows. Ventrals 201-220; anal divided (rarely entire) ; subcaudals 
48-68. Young yellowish or pale brown above, with a series of 
regular #4-shaped black or blackish-brown markings along the 
back, and small black spots on the sides; a Y-shaped black marking 
on the snout, a black streak from the eye to the angle of the mouth, 
and a black spot below the eye; belly yellow, spotted or checkered 
with black, or nearly entirely black. These dorsal markings dis- 
appearing in the adult, and replaced by a pair of brown stripes 
running along the back ; the belly uniform yellow. 
Total length 925 millim.; tail 160. 
South of France, Pyrenean Peninsula. 
@ 6 (Se..275. Vu 2005) C. Near Niece. Dr, F. Werner [E. ] 
62). 
b. Yg. (Sc. 27; V. 310; Montpellier. 
Cc. 68). 
GO (Ser 2h Moos Spain. Lord Lilford [P.]. 
Cre) 
VOL. II. hy 
