744 13. COLUBRIDX 



Coronclla gentilis BOULENGER, Cat. Snakes Brit. Mus., Vol. II, 1894, 



p. 20 1 (part?). 

 Ophibolus doliatut sysputus COPE, Proc. Acad. Nat. Sci. Phila., 1893, 



p. 387 (Hennessy, Oklahoma). 

 Osceola doliata gentilis COPE, Rep. U. S. Nat. Mus., for 1898, 1900, 



p. 894, fig. 218. 

 Lampropeltis pyrrhomelana celtenops STEJNEGER, Proc. U. S. Nat. Mus., 



Vol. XXV, 1902, p. 153 (type locality, Mesilla Valley, New 



Mexico); STEJNEGER & BARBOUR, Check List N. Amer. Amph. 



Kept., 1917, p. 89. 

 Lampropeltis doiatus gentilis BRANSON, Kan as Univ. Sci. Bull., Vol. 



II, No. 13, 1904, p. 402, figs. 25, 253. 

 Lampropeltis triangulum gentilis STEJNEGER & BARBOUR, Check List 



N. Amer. Amph. Rept., 1917, p. 90; BLANCHARD, Occas. Papers 



Mus. Zool. Univ. Michigan, No. 87, 1920, pp. 6, ; BLANCHARD 



Bull. U. S. Nat. Mus., No. 114, 1921, p. 165, fig. 72. 



3 



Description. Top of head slightly flattened posteriorly, 



curving downward to broad, rounded snout. Rostral plate 

 large, broader than high, hollowed below, and bounded be- 

 hind by internasal, anterior nasal, and first labial plates. 

 Plates on top of head are a pair of internasals, a pair of 

 prefrontals, a short, broad frontal between two supraoculars, 

 and a pair of large parietals. Anterior and posterior nasals 

 distinct. Loreal present. One preocular. Two (or rarely 

 one) post oculars. Temporals normally two followed by 

 three. Seven or eight superior and nine, eight or ten in- 

 ferior labials, fifth and sixth superior and fifth inferior 

 usually largest, third and fourth superior reaching eye, first 

 pair of inferior meeting on median line. Genials in two 

 pairs, anterior larger than posterior. Scales on body smooth, 

 thin, imbricate, usually in 2 1 , or sometimes 23 or 1 9, rows. 

 Anal plate not divided. Gastrosteges varying in number 

 from 176 to 212. Urosteges in two series of from 31 to 53. 

 The snout is blackish, sometimes more or less relieved 

 with gray or white markings. A white spot may be present 

 on the parietal plate anteriorly and the posterior edges of 



