Greenback. Heckscher's Frog. River-swamp 



Frog. Wright's Bull-frog. 





Plate LXVIII. i, 4. Fe- 

 males (xf). 2. Tadpole (x |). 

 3. Male (xf). 5. Hind foot 

 (xf). 6. Young tadpole (xi). 



Rana heckscheri Wright. 



Range: Coastal South 

 Carolina to Callahan, Florida, 

 west to Biloxi, Miss., (Allen) 

 and possibly to Louisiana. 



Habitat: Swampy edges of 

 rivers and streams, a truly 

 fluviatile species. 



Size: Adults, 3 1/4-5 

 inches. (Males, 82-131 mm. 

 Females, 102-131 mm.). 



General appearance: This is 

 a large greenish black, rough 

 skinned frog with the venter 

 very heavily mottled with 

 black. The throat of the male 

 has a wash of yellow on a 

 light gray background. The 

 edge of lower jaw with light 

 spots of white, yellow or buff, 

 is similar to the green frog. 

 The center of the ear drum is 

 rough, light brown or green- 

 ish buff, with the remainder 

 very dark, almost black. The 

 webbing on the foot does not 

 extend to the tip of the 

 fourth toe, leaving about 

 1 1/2 joints free. 



Structure: Upper parts 

 sometimes very warty; no 

 lateral fold; center of ear 

 drum granular and light in 

 color; 1st, 2nd, 3rd, and 5th 

 toes shorter than correspond- 

 ing toes of R. gryiio and R. 

 catesbeiana; 3rd toe con- 



170 



