NATURAL HISTORY, TORONTO REGION 



Newt, Diemyctylus viridescens, Rafinesque. This 

 includes the terrestrial variety, miniatus, Raf. The 

 species occurs on all sides of the city, in pools, bays 

 of the larger bodies of water, (e.g., Howard Lake and 

 Island Lagoons), and in the quieter portions of 

 streams where there is considerable vegetation grow- 

 ing in water. The eggs are deposited singly on 

 water plants, almost daily for some weeks, April 15- 

 June 15, and the metamorphosis takes place in Sep- 

 tember of the same year. The terrestrial stage lasts 

 one or more years; it is first interrupted by the 

 return to water in breeding season, and as age 

 increases this aquatic phase is lengthened and at last 

 becomes permanent. 



ANTJEA. 



Common Toad, Bufo lentiginosus, var. americanus, 

 Cope. Occurs everywhere, in woods, along h 

 and fences, in gardens. The spawn is in coil 

 strings, submerged at the edges of quiet waters. 

 April-July. Tadpole black. Metamorphosis occurs 

 after about eight weeks. 



Swamp Tree Frog, Clioropliilus triseriatus, Wi( 

 Low and marshy land, Humber and Don valley 

 Spawn in masses containing 20 to 100 eggs, sul 

 merged on grasses and twigs in pools in open me 

 dows, ditches, etc. April 1-20. Tadpole black ai 

 sluggish. Metamorphosis occurs in ten to tweh 



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