List of Half-tone Illustrations 



PLATB FACING PAGE 



Ixix. WESTERN GARTER SNAKE, Eutcenia elegans . . 228 

 ONE-STRIPED GARTERSNAKE, Eutcenia elegans; phase 



infernalis ....... 228 



Ixx. GRAY GARTER SNAKE, Eutcenia elegans vagrans . 229 

 MARCY'S GARTER SNAKE, Eutcenia elegans marciana 229 



Ixxi. BROWN GARTER SNAKE, Eutcenia eques . . 236 

 Phases of the COMMON GARTER SNAKE, Eutcenia 



sirtalis . . . . . 236 



Ixxii. RED-BARRED GARTER SNAKE, Eutcenia sirtalis pari- 



etalis ....... 237 



PICKERING'S GARTER SNAKE, Eutcenia sirtalis pick- 



eringii. This is the blackest of the varieties 237 

 of E. sirtalis ...... 



SPOTTED GARTER SNAKE, Eutcenia sirtalis ordinata 237 

 Ixxiii. HEADS OF THE WATER SNAKES. Tropidonotusleberis, 

 Ohio. Tropidonotus fasciatus, Florida; Tropi- 

 donotus grahami, Missouri; Tropidonotus tax- 

 ispilotus, Georgia; Tropidonotus rhombifer, 

 Illinois; Tropidonotus validus, Mexico: Semi- 

 natrix pygcea, Florida ..... 240 



Ixxiv. QUEEN SNAKE, Tropidonotus leberis. (Young) . 241 



QUEEN SNAKE, Tropidonotus leberis. (Adult) . 241 



GRAHAM'S WATER SNAKE, Tropidonotus grabami 241 



Ixxv. BANDED WATER SNAKE, Tropidonotus fasciatus 244 



RED-BELLIED WATER SNAKE, Tropidonotus fasciatus 



erytbrogaster. ... . . 244 



Ixxvi. COMMON WATER SNAKE, Tropidonotus fasciatus 



sipedon ....... 245 



BLOTCHED WATER SNAKE, Tropidonotus fasciatus 



transversus . . . . . . . 245 



Ixxvii. FLAT-TAILED WATER SNAKE, Tropidonotus compr&ssi- 



caudus . . . . . . . 252 



DIAMOND-BACK WATER SNAKE, Tropidonotus rbomb- 



ifer ........ 252 



Ixxviii. GREEN WATER SNAKE, Tropidonotus cydopium 253 

 BROWN WATER SNAKE, Tropidonotus taxispilotus. 

 Largest of the North American Water Snakes, 

 Reaching a Length of Five Feet . . . 253 

 xxviii 



