CHECKLIST OF THE SNAKES OF MEXICO 43 



KEY TO MEXICAN FORMS OF CONOPHIS 



1. First scale row not pigmented on any part of body ; chin and labial border 



white; nsually seven supralabials 2 



First scale row pigmented on part or all of body; chin and labial border 

 pigmented ; nsually eight supralabials 3 



2. Four dark stripes posteriorly, median pair separated by one and two half 



scale rows vittatus vittatus 



Three dark stripes posteriorly ; if a light median area is present in median 

 dark stripe, it is less than one scale row in width vittatus viduus 



3. Dorsolateral dark stripe that passes through eye involving upper half of 



second scale row ; a dark stripe on paravertebral scale rows at least 

 posteriorly ; stripes spotted in appearance ; markings on chin and labial 



borders dim ; ventrals completely unpigmented pulcher similis 



Dorsolateral dark stripe that passes through eye becoming indistinct on 

 body, or restricted to third and fourth or fourth rows, not involving 

 second row ; no stripes on paravertebral rows on any part of body 4 



4. Stripes disappearing on nape, not or but faintly visible posteriorly. 



lineatus concolor 

 Stripes visible throughout length of body lineatus lineatus 



CONOPHIS LINEATUS LINEATUS (Dumeril, Bibron, and Diimeril) ="> 



Tomodon Imeatus Dumeril, Bibeon, and DuMltBix, Erpetologie geu'^rale, vol. 7, 

 pt. 2, 1854, pp. 930-938, pi. 73. — Bocoukt, Mission scientifique au Mexique 

 et dans I'Amerique centrale, Rept., livr. 10, 1886, p. 643, pi. 38, fig. 5. 



Conophis Imeatus lineatus Smith, Journ. Washington Acad. Sci., vol. 31, 1941, 

 p. 122. 



Type. — Mus. Hist. Nat. Paris. 



Type locality. — Mexico. 



Range. — Atlantic coast of Mexico, from central Veracruz southward 

 (definitely recorded only from Paso del Macho and Veracruz, 

 Veracrniz). 



CONOPHIS LINEATUS CONCOLOR Cope 



Conophis concolor Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 18, 1866 (1867), 



pp. 318-319. 

 Conophis lineatus concolor Smith, Journ. "Washington Acad. Sci., vol. 31, 1941, 



p. 122. 



Type.—V.S.IS^.M. No. 12368, two cotypes. 



Type locality. — Yucatan. 



Range. — Yucatan Peninsula and southward in Central America to 

 Honduras (known in Mexico only from several localities in Yucatan^ 

 and Champoton, Campeche). 



CONOPHIS PULCHER SIMILIS Bocourt 



Conophis pulcher similis Bocourt, Mission scientifique au Mexique et dans 

 I'Amerique centrale, Rept., livr. 10, 1886, pp. 647-648.— Smith, Proc. U. S. 

 Nat. Mus., vol. 92, 1942, p. 395. 



*» The related Central American subspecies, Conophis lineatus dvnni Smith, is well 

 illustrated on pi. 20 (lower fig.) of Ditmars's "Snakes of the World," 1931, under the name 

 Liophis decoratus. Another Central American species, Conophis pulcher pulcher Cope, is 

 shown on pis. 26 (lower fig.) and 27 of the same work, under the name Conophis lineatus. 



