Voice: The call is a loud resonant trill, ending abruptly, ten or 

 eleven calls in half a minute. About the middle of May, at Ithaca, 

 they are in the chorus stage. In the evening, all over the University 

 hill and the hills nearby, along the wooded ravines, in the thickety 

 edges and woods of our marshes, we may stumble upon the noisy 

 tree toads slowly approaching the nearest breeding place. In one 

 instance their resort is a pond at the end of a long hedge. Here, at the 

 breeding season, every evening and sometimes after a thunder shower 

 by day, the males can be heard all along its length, slowly bound for 

 the one objective pool, where some have already arrived. 



Breeding: They breed from the end of April to August 1 1 . The 

 brown and cream or yellow eggs are laid in small scattered masses or 

 packets of not more than 30 to 40 eggs on the surface of quiet pools, 

 the packets loosely attached to vegetation. The egg is 1/25-1/20 

 inch (1.1-1.2 mm.), the outer envelope indistinct 1/6-1/3 inch 

 (4-8 mm.) merging in the jelly mass, the inner envelope 1/16-1/ 11 

 inch (1.4-2 mm.). They hatch in 4 to 5 days. The tadpole is medium 

 up to 2 inches (50 mm.), tail long, scarlet or orange vermillion with 

 black blotches around the edges of the crests and with a long tip. 

 The tooth ridges are 2/3. After a tadpole period of 45 to 65 days, 

 they transform from June 27 to August, at 1/2-4/5 i ncn (13-20 mm.). 



Notes: Ithaca, N. Y. June 19, 1907. This evening at 8:45 P- m -? I 

 reached the Veterinary College pond. Tree toads were in chorus. In 

 fifteen minutes I had captured twenty individuals (including a mated 

 pair). I found them also in the grass near by, migrating to the pond, 

 one in the road just west. Toads were singing here also. 



I went out to Cross Roads pond. Here they were just as common. 

 The log in the southwest corner had four perched on it. To show how 

 tame and how dazed they were by the light, I stroked a croaking 

 male with the lighted end of my "Ever-Ready," 91 times without his 

 stirring. He croaked just the same. I could have repeated the opera- 

 tion. ... In a tree on the north edge of the pond were four males, 

 two on one limb facing each other. 



June 21, 1907. Cross Roads pond — 11 a. m. All around the pond 

 were tree toad eggs. I staked out about six or seven areas of them. 

 The packets, each an emission of eggs, may be 6-12 inches apart or 

 only an inch or less. Sometimes from groups of eggs at more or less 

 definite intervals one can determine the path of the pair. The eggs 

 are almost invariably at the surface. 



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