INDEX. 



[The black-faced numbers indicate specific headings.) 



Page. 



Adder, spotted, checkered 188, 193 



alterna. 5, 6, 7, 17, 234, 247, 249, 250, 251 



alternus 247 



amaxira 162,169,172,179,181, 



184,185,202,210,211,212,237 et seq., 252,254 



amaurus — , 172 



annulata 142, 



146, 155,156, 157,159, 169, 172, 175, 

 176,223,233,237 et seq., 250,251,252 



annulatus 159, 165 



anomala 6, 139 



arcifera 140 



Arizona ringed snake 231 



baiteata 75 



Bastard horn snake 49 



Beilophis 4 



zonatus 4 



Black and white king snake 75 



Black moccasin 49 



boylei 75 



Boyle's king snake 75 



boylii 12,66,68,69,73,75, 89 et seq., 103, 



104 et seq., 163, 222, 223, 240, 241, 250 et seq. 



brooksi 4, 57, 58, 66, 105, 113, 115, 251 



Bro^^Ti king snake 128 



calif orniae 6, 58, 94, 103, 105, 115, 163, 253 



califomica 94 



calligaster 5,7,10,15,115,128, 



132, 133, 134, 138, 139, 250, 252, 254 



calligaster group 6, 



17, 107, 108, 138, 241, 247, 249 et seq. 



Caudals, variation of, in genus 15, 24 



celaenops 165 



Cemophora coccinea 207 



Centers of dispersal, criteria for 250 



Chain snake 49 



Checkered adder 188 



elerica 190 



clerieus 188, 190, 201 



coccinea 172, 206 



Goccinea, Coronella 4 



coccineus 140, 155, 172, 1 79, 206, 207 



collaris 179, 201 



Color pattern (see also description of each form). 16, 24 



Coluber constrictor 240 



Colubridae 5 



con juncta 5, 12, 15, 66, 73, 76, 77, 89,95, 103 , 



114, 115, 159, 163, 240 et seq., 251 



conjunctus 89, 159 



constrictor, Coluber 240 



Coral king snake 222, 223 



Corallilo 139,142 



Coral snake 206 



Coronella 5, 254 



coccinea 4 



186550— 21— Bull. 114 18 



Page. 



Cow sucker 49 



Dental characters, value of 16 



Dentition {see also description of each form) ... 7, 25 



dohata 139,165,179,189,206 



dohatus 172, 173, 179, 189, 190, 202, 206 



Drymobius margaritiferus 240 



eiseni 94 



Elaphe: 



guttata 10 



laeta 10, 116, 117, 122 



obsoleta 10 



elapsoidea 173,206 



elapsoides 5, 6, 8, 10, 11, 12, 15, 16, 163, 172, 173, 



176, 200, 206,219, 237, 250, 251, 263, 254 



elapsoideus 206 



evansii 116, 117 



Evans king snake 115 



Evolution in scutellation 11 



eximia 188 



eximius 116, 188 



jioridana 5, 11 . 15, 51, 55, 57, 58, 62, 



66,105,113,114,115,240,251 



formosa 139, 110, 149 



Formulae of scale rows 10-12 



gentilis. 7, 159, 161, 162, 163,165,172, 174, 175, 170, 181, 

 184, 185, 223, 227, 233, 234, 237 et seq., 251, 252, 253 



getula 33, 49, 75, 94 



getulus 12, 33, 36, 38, 43, 44, 45, 46, 49, 



62, 64, 80, 104 et seq., 226, 243 



getulus group 6, 11, 13, 16, 17, 26, 119, 



241, 243, 249 et seq. 



map of 104 



relationships of 115, 132 



summary of 104-115 



getulus, Herpetodryas 4 



Groups ofkingsnakes 17 



Guinea snake 33 



guttata, Elaphe 10 



Harlequin snake 222 



Herpetodryas getulus 4 



holbrooki 7, 12, 28, 29, 30, 83,43, 44, 46, 51, 



57, 80, 104 et seq., 163, 240, 241, 252 



Horse racer 49 



House moccasin 188 



House snake 188 



Key to forms of Lampropeltis 18 



King snake 26,33,36,49,66 



Labials, variation of, in genus 13-15, 24 



laeta, Elaphe 116,117 



Lampropeltis 4 



leonis 138, 249, 250 



Loreal, variation of, in genus 15 



figure of 5 



Maps. See under description of each form, 

 margaritiferus, Drymobius 240 



259 



