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. 
ANURA. 
Common Toad, Bufo lentiginosus, var. americanus, 
Cope. Occurs everywhere, in woods, along hedges 
and fences, in gardens. The spawn is in coiled 
strings, submerged at the edges of quiet waters. 
April-July. Tadpole black. Metamorphosis occurs 
after about eight weeks. 
Swamp Tree Frog, Chorophilus triseriatus, Wied. 
Low and marshy land, Humber and Don valleys. 
Spawn in masses containing 20 to 100 eggs, sub- 
merged on grasses and twigs in pools in open mea- 
dows, ditches, ete. April 1-20. Tadpole black and 
sluggish. Metamorphosis occurs in ten to twelve 
weeks. , 
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