88. COEONELLA. 201 



Total length 760 miUim. ; tail 120. 

 North America east of the Mississippi. 



A. A light V- or Y-shaped marking on the occiput. ( C. tnangulum.) 



a. d (V. 207 ; 0. 50). Canada. Chatham Mus. 



*-c. 2 (V. 198; 0.52) & Bloomington, Indiana. 0. H. Bollman, Esq. 



yg.(V. 196; 0.43). [C.l. 



d-e. Hgr. (V. 197 ; C. 46) New York. Mr. J. Murray [P.!. 



&yg. (V. 190; 0.47). ^^ ^ 



/. Tfg. (V. 206; 0. 63). N.America. E. Douhleday, Esq. 



ff, h, t, k. d (V. 195 ; 0. N. America. 

 49), 2 (V.193; 0.49), 

 hgr. (V. 202 ; C. 61), & 

 yg. (V. 202; 0.51). 



B. A light transverse collar behind the parietals. 

 (Var. coUaris, Cope.) 



a. Hgr. (V. 195 ; 0. 45). N. America. G. Henshaw, Esq. 



[P.]. 



b. Hgr. (V. 198 ; C. 46). N. America. Dr. Jacob Green fP.!. 



c. Hgr. (V. 189; 0.51). N.America. 



This variety connects G. triangulum with C. gentilis and C. doliata. 



11. Coronella gentilis. 



Ophibolus doliatus, Baird f Gfir. Cat. iV. Am. Hepi. p. 89 (1853) ; 



Bughs, La Naturaleza, iii. 1875, p. 222, pi. — {?) ; Cope, Proe. 



U.S. Nat. Mus. xiv. 1892, p. 608. 

 gentilis, Baird 8f Gir. I. c. p. 90, and Marcy's Explor. Bed Biv. 



p. 229, pi. yiii. (1853). 

 Coronella doliata, part., Dimi. ^ Bibr. vii. p. 621 (1854) ; Gunth. Cat. 



p. 41 (1858). 



doliata, Sallow. Proc. Ac. Philad. 1856, p. 247; Wied, N, 



Acta Ac. Leop.-Carol. xxxii. i. 1865, p. 99. 



Lampropeltis doliata. Cope, Proc. Ac. Philad. 1860, p. 256. 

 annulata. Cope, I. c. p. 257. 



multistriata, Kenmcott, Proc. Ac. Philad. 1860, p. 328 ; 



Stejneger, Proc. U.S. Nat. Mus. xiv. 1891, p. 502. 



annulata, part., Kennicott, I. c. p. 329. 



Coronella doliata, var. gentilis, Jan, Arch. Zool. Anat. Phys. ii. 



1863, p. 241, and Icon. Gin. 17, pi. i. fig. 2 (1866) ; Bocourt, Miss. 



Sc. Mex., Bept. p. 610, pi. xxxix. iig. 5 (1886). 

 Ophibolus doliatus coccineus, gentilis, annulatus, et doliatus, Cope, 



Check-list N Am. Bept. pp. 4, 36 (1875), and Proc. U.S. Nat. 



Mus. xi. 1888, p. 381, and Am. Nat. 1893, p. 1067, pis. xxvi. & 



xxviii. 



multistratus. Cope, Check-list, p. 37. 



triangulus, vars. mexicanus {?), doliatus, et gentilis, Garman, 



N. Am. Bept. p. 66 (1883). 

 doliatus syspylus, Cope, Proc. U.S. Nat. Mus. xi. 1888, p. 383, 



and Am. Nat. 1893, p. 1067, pi. xxvii. fig. 1. 

 P Coronella mexicana, GUnth. Biol. C.-Am., Bept. p. 110 (1893). 



Snout slightly prominent; rostral about once and a half as broad 

 as deep, the portion visible from above measuring about one third 



