^ 34. LAMPROPELTIS 753 



Sci. Phila., 1901, p. 78; Ditmars, Reptile Book, 1917, pp. 341, 363, 

 pis. cm, fig. 9, CVIII, fig; Ditmars, Reptiles World, 1910, p. 271; 

 RuTHLiNG, Copeia, 191 5, No. 15. 



Coronella gelula Boulenger, Cat. Snakes Brit. Mus., Vol. II, 1894, pi. 97 

 (part). 



Lampropehis boylii boylii Stejneger & Barbour, Check List N. Amer. 

 Amph. Rept., 1917, p. 87. 



Lampropeltis getulus boylii Blanchard, Occas. Papers Mus. Zool. Univ. 

 Michigan, No. 87, 1920, pp. 3, -; Stephens, Trans. San Diego 

 See. Nat. Hist., Vol. Ill, No. 4, 1921, p. 64; Van Denburqh & 

 Slevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, pp. 28, 52; 

 Nelson Mem. Nat. Acad. Sci., Vol. XVI, 1921, p. 1 14; Blanchard, 

 Bull. U. S. Nat. Mus., No. 114, 1921, p. 75, fig. 27. 



Descripion. — A larger and stouter snake than L. zonal*. 

 Top of head slightly flattened posteriorly, curving down- 

 ward to the broad rounded snout. Temporal regions rarely 

 if ever swollen. Rostral plate large, little broader than high, 

 hollowed below, and bounded behind 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, 

 irregularly wedge-shaped frontal, supraocular of each side, 

 and a pair of large parietals. Anterior and posterior nasals 

 distinct. A small loreal present, but very rarely united with 

 posterior nasal. One preocular and two (rarely one) post- 

 oculars. Temporals normally two followed by three, but 

 may be 2+2, 2+4, or 3+4. Seven or rarely eight superior 

 and nine, rarely eight or 10, inferior labials, fifth and sixth 

 superior and fifth or fourth inferior largest, third and fourth 

 superior reaching eye, first pair of inferior meeting on 

 median line. Genials in two pairs, anterior much larger 

 than posterior. Scales smooth, thin, imbricate, in 23 or 

 rarely 25 rows. Anal plate not divided. Gastrosteges vary- 

 ing in number from 206 to 254. Urosteges in two series 

 of from 41 to 62, a few of the first sometimes undivided. 



The snout and sides of the head are yellow or white, 



