Plate 30 



Map 47. Grass Snakes. The symbols 

 in northeastern Ohio indicate locahlies for 

 the Eastern Grass Snake, Opheodrys ver- 

 na/i5 vernalis. TTie spots in the three south- 

 western ccuniies mark loca'ities for the 

 Western Gr^ss Snake, Opheodrvs vcrualis 

 hlancharJi. Specimens from withm the 

 stippled area are members of an mter- 

 grading populption. Opheodrvis vernalis 

 vernalis X hlanchardi. This population 

 may extend farther westwPrd than indi- 

 cated, or it may be that future collecting 

 will demonstrate the presence of hlan- 

 chardi in the northwestern counties. Grass 

 snakes must be at least rare or highly lo- 

 calized in that portion of the state. Agri- 

 cultural activities have obliterated or great- 

 ly altered the original habitats. (See pp. 

 219-222.) 



Map 48 R?cers. The sym.bols in south- 

 eastern Ohio indicate loc-iilies for the 

 Black Racer, Co/iifcer constrictor consiric- 

 lor ; those in northwestern Ohio mark 

 localities for the Blue Racer, Coluhzr con- 

 strictor flaviventris. Specimens from within 

 the stippled area are members of an inter- 

 grading population, Coluhsr constrictor 

 consiriclor X flavivenlns The limit of the 

 inlergrading area cannot be defined in the 

 extreme northeastern part of Ohio because 

 of the paucity of material from that part 

 of the state. (See pp. 222-224.) 



( 271 ) 



