405 REED-WRIGHT— THE VERTEBRATES OF [October i, 



80. Rana clamata Daudin. Green frog. 



Common. It appears from hibernation the middle of April. 

 The eggs are not laid until the first of June, through this month, 

 July and a part of August. The eggs are deposited in a frothy 

 film which floats at the surface of the water. The larval period is of 

 about thirteen months duration transformation beginning the middle 

 of the July of the following year in which the eggs are laid. The 

 latest fall record is November i, 1902. 



81. Rana catesbeiana Shaw. Bull frog. 



Common. This is the last one of the frogs to emerge from hiber- 

 nation, never appearing before the middle of May. The eggs are 

 laid the last of June and the first of July in an irregular sheet of 

 film attached to sticks or twigs near the surface of the water. The 

 larval stage lasts for a period of two years, the tadpoles transform- 

 ing in July and August of the second year following hatching. 



82. Rana sylvatica Le Conte. Wood frog. 



Common. It appears in the spring, the last of March or the first 

 of April. Egg-laying begins almost immediately. The young trans- 

 form the last of June about 90 days after the eggs are laid. The 

 latest fall record is November i, 1906. 



D. Class REPTILIA. 



XX. Order OPHIDIA. 



30. Family Colubrid^. The Harmless Snakes. 



83. Diadophis punctatus (Linnaeus). Ring-necked snake. 

 Common. The earliest date upon which it has been observed in 



the spring is April 19, 1900. The latest fall date is October 16, 1905. 



84. Liopeltis vernalis (Harlan). Smooth green snake. 



Not common. De Kay, however, records it as common at the 

 north end of the lake in the marshes. The latest fall record is Octo- 

 ber 20, 1906. 



85. Bascanion constrictor (Linnaeus). Black snake. 



Formerly common. Now confined to the region about New- 

 field and Danby in the southern portion of the basin. 



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