34. LAMPROPELTIS 



169. Lampropeltis getulus yumensis Blanchard 



Desert Milk. Snake 



Ophibolus boylii B.^ird, U. S. Mex. Bound. Surv., Vol. II, 1859, p. 20. 



Lampropeltis boylii conjuncta Cope, Proc. Acad. Nat. Sci. Phila., 1 86 1, 

 p. 301 (part). 



Coronella getulus splendida Jan, Iconog. Gener. Ophid., livr. 12, 1865, 

 pi. 6, fig. I. 



Ophibolus getulus boylii Yarrow, Surv. W. looth Merid., Vol. V, 1875, 

 p. SZ^ (part); Yarrow, Bull. U. S. Nat. Mus., No. 24, 1883, 

 p. 92 (part); Cope, Report U. S. Nat. Mus. for 1898, 1900, p. 919 

 (part); Brown, Proc. Acad. Nat. Sci. Phila., 1901, p. 78 (part). 



Lampropeltis conjuncta Van Denburgh, Proc. Cal. Acad. Sci., Ser. 4, 

 Vol. 3, 191 2, p. 154; Grinnell & Camp, Univ. Cal. Pubis. Zool., 

 Vol. 17, No. 10, 1917, p. 187; Hall & Grinnell, Proc. Cal. Acad. 

 Sci., Ser. 4, Vol. 9, No. 2, 1919, p. 48. 



Lampropeltis boylii conjuncta Stejneger & Barbour, Check Li<?t N. 

 Amer. Amph. Rept., 1917, p. 87 (part). 



Lampropeltis getulus yumensis Blanchard, Occas. Papers Mus. Zool. 

 Univ. Michigan, No. 70, 1919, p. 6 (type locahty, 27 miles west 

 of Indian Oasis, Pima County, Arizona); Blanchard, Occas. 

 Papers Mus. Zool. Univ. Michigan, No. 87, 1920, pp. 4, -; Van 

 Denburgh & Slevin, Proc. Cal. Acad. Sci., Ser. 4, Vol. XI, 1921, 

 p. 52; Blanchard, Bull. U. S. Nat. Mus., No. 114, p. 66, fig. 28. 



Description. — Similar to L. g. boylii. Top of head 

 slightly flattened posteriorly, curving downward to the 

 broad rounded snout. Temporal regions rarely if ever 

 swollen. Rostral plate large, little broader than high, hol- 

 lowed 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 

 frontal, supraocular of each side, and a pair of large parie- 

 tals. Anterior and posterior nasals distinct. Loreal a little 

 longer than high. One preocular and two (rarely one) post- 

 oculars. Temporals normally two followed by three, but 

 may be 1 +3, 2+4, or 3+4. Seven, or rarely eight, superior 

 and nine, or rarely 1 0, inferior labials 5 fifth and sixth super- 



