LIST OF ILLUSTRATIONS. 



Page. 

 Fio. 1. Lampropeltis getulus splendida, fihowing normal arrangement of head 



plates from above 5 



2. Everted penis of Lampropeltis calligaster 7 



3. Lampropeltis getulus splendida, showing normal arrangement of head 



plates from the side 12 



4. Lampropeltis getulus getulus, shovang extra supralabial scute inter- 



polated l)etween normal second and third 12 



5. Lampropeltis pyrrhomelaena, showing an extra labial in each series.. 13 



6. Lampropeltis calligaster, showing position of the added labial in each 



series 13 



7. Lampropeltis elapsoides elapsoides, showing reduction of lower labials 



from 9 to 8 13 



8. Map showing locality records for Lampropeltis getulus splendida 28 



9. Map showing locality records for Lampropeltis getulus holbrooki 37 



10. Map showing locality records for Lampropeltis getulus niger 45 



11. Diagram showing geographic variation in number of ventral plates in 



Lampropeltis getulus getiilus 55 



12. Map showing locality records for Lampropeltis getulus getulus 56 



13. Map showing locality records for Lampropeltis getulus floridana 63 



14. Diagram for comparison of numbers of ventral plates in Lampropeltis 



'getulus boylii, L. g. yumensis, and L. g. splendida 70 



15. Diagram for comparison of numbers of cross bands or rings in Lampro- 



peltis getulus boylii, L. g. yumensis, and L. g. splendida 71 



16. Map showing locality records for Lampropeltis getulus yumensis 72 



17. Diagram showing geographic variation in numbers of ventral plates 



in Lampropeltis getuhis yumensis and L. g. boylii 81 



18. Diagram showing geographic variation in numbers of annuli in Lam- 



propeltis getulus yumensis, and L. g. boylii 82 



19. Diagram showing geographic variation in numbers of labial plates in 



Lampropeltis getulus boylii, L. g. yumensis, and L. g. conjuncta... 84 



20. Map showing locality records for Lampropeltis getulus boylii 85 



21. Color pattern of Lampropeltis getulus conjuncta 90 



22. Color pattern of Lampropeltis californiae cahfomiae from San Diego 



County, California 96 



23. Map showing locality records for I>ampropeltis californiae californiae. . 97 



24. Map showing the distribution of the various forms of the getulus 



group. 



104 



25. Diagram showing geographic variation in numbers of ventral plates 



in the forms of the getulus group 106 



26. Diagram showing geographic variation in numbers of rings or cross 



bands in the various forms of the getulus group Ill 



27. Typical color pattern of Lampropeltis getulus boylii To face 112 



28. Typical color pattern of Lampropeltis getulus yumensis To face 112 



29. Color pattern of Lampropeltis getulus splendida, showing approach 



to the pattern of L. g. yumensis in the widened dark areas. . To face 112 



30. Color pattern of Lampropeltis getulus splendida, showing the theo- 



retically most primitive type of pattern in the getulus group. To face 112 



31. Color pattern of Lampropeltis gelulus splendida, showing the common 



pattern of this form To face 112 



32. Typical color pattern of Lampropeltis getulus holbrooki To face 112 



33. Typical color pattern of Lampropeltis getulus niger To face 112 



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