54. ZAMENIS. 387 



5. Zamenis constrictor. 



Coluber constrictor, Linn. S. N. i. p. 385 (17t)6) ; Cateshy, Nat. 



Hist. Carol, ii. pi. xlviii. (1771) ; Dand. Rept. vi. p. 402 (1803) ; 



Marl. Joum. Ac. Phi/ad. v. 1827, p. 348, and Med. Phys. lies. p. 112 



(1835) ; Schleg. Phi/s. 8erp. ii. p. 133 (1837) ; Storer, liej). Fi.sh. ^ 



Rept. Mass. p. 225 (1839) ; Holhr. N. Am. Her}), iii. p, 55, pi. xi. 



(1842) ; De Kaij, Faun. N. York, Rept. p. 35, pi. x. fi^. 20 (1842) ; 



Garm. N. Am. Rept. p. 41, pi. iv. lig. 3 (1883) ; //. Garm. Bull. 



Illin. Lab. iii. 1892, p. 285. 

 flaviventris. Say, in Irony's F.vped. Rocky Mount, ii. p. 185 



(1823) ; Hart. II. re. ; Garm. Bull. Fssex Inst. xxiv. 1892, p. 107. 

 mormon, Baird 4" Gir. in Stansbury's Exped. Great Salt Lake, 



p. 351 (1852). 

 Bascanion constrictor, Baird Sf Gir. Cat. N. Am. Rept. p. 93 (1853) ; 



Bocourt, Mi.ss. Sc. Me.r., Rept. pi. xlviii. fig. 5 (1890) ; Cope, Proc. 



U.S. Nat. Mas. xiv. 1892, p. 623. 



fremontii, Baird ^- Gir. I. c. p. 95. 



foxii, Baird c^ Gir. I. c. p. 96. 



flaviventris, Bnird Si Gir. I. c. p. 96 ; Bocourt, Miss. Sc. Me.i:, 



Rept. p. 697, pi. xlviii. fig. 3 (1890). 

 vetustus, Baird S,- Gir. I. c. p. 97 ; Gir. U.S. E.iplor. Exped., 



Herp. p. 127, pi. viii. figs. 12-19 (1858). 

 Masticopbis mormon. Baird Sf Gir. I. c. p. 101. 

 Corvphodon constrictor, Dam. S)- Bibr. vii. p. 183 (1854) ; Halloiv. 



Proc. Ac. Philad. 1850, p. 242 ; Giinth. Cat. p. 108 (1858) ; Jan, 



Icon. Gen. 22, pi. iii. & pi. iv. figs. 1 & 2 (1867). 



flaviventris, Halloic. Proc. Ac. Philad. 1856, p. 241. 



testaceus, part., Giinth. I. c. p. 108. 



constrictor flaviventris, Ja7i, op. cit. 48, pi. vi. fig. 2 (1876). 



Snout moderately prominent. Eostral as deep as broad or a 

 little broader, tbe portion visible from above measuring one tbird 

 to one half its distance from the frontal ; internasals shorter than 

 the praefrontals ; frontal once and a half to once and three fourths 

 as long as broad, anteriorly a little broader than the supraocular, as 

 long as or a little longer than its distance from the end of the 

 snout, nearly as long as the parietals ; loreal as long as deep or a 

 little longer ; one pneocular (rarely divided), with a small sub- 

 ocular below it ; two postoculai's ; temporals 2 + -; seven (rarely 

 eight) upper labials, third aiid fourth (or fourth and fifth) entering 

 the eye ; four lower labials in contact with the anterior chin- 

 shields ; posterior chin-shields as long as or a little shorter than 

 the anterior, and separated from each other by scales. Scales 

 smooth, in 17 rows. Ventrals not distinctly angulate laterally, 

 160-190 ; anal divided ; subcaudals 74-104. Olive to black 

 above ; young with transversely oval, dark, black-edged spots. 



Totd length 1580 millim. ; tail 370. 



North America, North Mexico. 



A. Black above and below ; lips and throat yellowish. 

 ((?. constrictor.) 



a. 2 (V. 175 ; C. 97). New Orleans. 



h. $ (V. 180 ; C. 88). N. America. 



''. Skull. N. America. 



2c2 



