on the tibia. There is considerable greenish yellow in the groin and 

 on the concealed portions of legs and feet. There is a prominent dark 

 bar on the brachium, a broad, fleshy, spotted band along the jaw, 

 and a light center to the tympanum. The light color on the arms and 

 jaw is quite grayish. There are several smaller, light rimmed, dark 

 spots on eyelids, between the eyes and on top of the snout. The legs 

 are prominently barred with brown and cream or gray. In this group, 

 the frogs have a few dark spots just forward of the arm insertion. 

 When cold and wet, the frogs were very dark. The vocal sacs of the 

 males are large and conspicuous when collapsed, and bluish gray green 

 in color. When expanded they form large balls on either side above 

 the arms. (When plowed out in early spring they are so dark as to be 

 almost blackish.) 



Structure: Large; skin warty on back and sides; head shorter, 

 mouth smaller and hind limbs longer than R. aesopus; males having 

 prominent, collapsed, pleated, vocal sacs resting outside like folds of 

 skin and continuing along the sides as folds past the axil; the middle 

 of the sac being back of the tympanum; thumb somewhat enlarged in 

 the male; eye conspicuous, but small in relation to snout; fourth toe 

 very long; a thickened or fleshy band along the edge of the jaw. On 

 the breast, the arm insertion with the pectoral girdle is conspicuously 

 indicated by a triangle of much thinner skin, the base at arm's inser- 

 tion, the point at the pectoral region; waist slightly broader, thus 

 making whole form less wedge-shaped than R. aesopus. 



Voice: "A loud trill, hoarser than that of the leopard frog and 

 pitched somewhat higher than that of Rana catesbeiana." — (C. 

 Thompson, 191 5, p. 6). To Mr. Ackert, the call sounds "half-stran- 

 gled" as if it had its mouth half out of water. "A deep gutteral snoring 

 sound with a slight upward crescendo at the end." — (Wright and 

 Myers, 1927). 



Breeding: They breed from March to April. The eggs are in large 

 masses. The tadpole is not yet described. Transformation takes 

 place the first week in July at 1 1/5 inches (30 mm.). 



Notes: "This species was much more common in this region than 

 is ordinarily supposed; its cry, if not the frog itself, being familiar to 

 almost everyone who listens to frog voices in the spring. It was much 

 more wary and difficult to catch than any other species of the vicinity, 

 and perhaps this habitual shyness, and the fact that it remains quiet 

 throughout the day and in or near its burrow all the year except dur- 

 ing the breeding season, may account for its being so little known. As 

 observed in Franklin County, Kansas, it began to sing about the 

 middle of March and continued to sing a relatively short time. It was 

 not heard after the middle of April."— (Howard K. Gloyd, 1928, p. 1 17). 



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