COLUBER. 65 



neck with four interrupted black strips ; a dorsal series of 00- 

 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. c? (V. I'M : C. GO). Duenas, Guatemala. 0. Salvin, Esq. [C.]. 



41. Coluber scalaris. 



Coluber scalaris, Schinz, Cuv. Thierr. ii. p. 123 (1822) ; Boie, Isis, 



1 -27, p. 530. 



heramnni, Desmarest, Faune Fran^., Kept. pi. sir. (1826) ; 



Lesson, Act. Soc. Linn. Bord. xii. 1841, p. 58. 

 Rhinechis agassizii, Michahelles, in Wayl. Icon. Amph. pi. xxv. 



(1833). 



( 'oluber agassizii, Dugh, Ann. Sc. Nat. (2) iii. 1835, p. 139. 

 \--nodon mickahelles, Schleg. Phys. Serp. ii. p. 92 (1837). 

 Rhinechis scalaris, Bonap. Icon. Faun. Ital. (1838) ; Dum. 3f Bibr. 



vii. p. -2-27 (1854) ; Giinth. Cat. p. 85 (1858) ; Jan, Icon. Gen. 20, 



pi. I. (18C>7) ; De Betta, Faun. Ital., Rett. Anf. p. 39 (1874) 

 'eib. Herp. Eur. p. 290 (1875); Bedriaga, Amph. $ Eept. 



Portug. p. 73 (1889). 



Snout strongly projecting ; rostral deeper than broad, forming an 

 acute angle posteriorly, wedged in between the internasals, the 

 portion, visible from above nearly as long as its distance from the 

 frontal ; internasals shorter than the pncfrontals ; 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 prae- 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 2i) 

 rows. Ventrals 201-220; anal divided (rarely entire); subcaudals 

 48-68. Young yellowish or pale brown above, with a series of 

 regular |-| -shaped black or blackish- brown markings along the 

 back, and small black spots on the sides ; a V-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. 



a. J (Sc. 27 ; V. 207 ; C. Near Xicr. Dr. F. Werner [E.1 



en. 



. (Sc. 27; V. 210; Montpellier. 



e. $ V. 213 ; Spain. Lord Lilford [P.l 



C.?). 



VOL. II. f 



