NATURAL HISTORY, TORONTO REGION 
Libellula quadrimaculata, Linn. Ponds, very com- 
mon. 
Plathemis lydia, Dru. Ponds and ditches, abundant. 
Erythemis simplicicollis, Say. Ponds, common. 
Pachydiplax longipennis, Burm. Abundant, espe- 
cially at Grenadier Pond. 
Sympetrum costiferum, Hag. Don Valley and Is- 
land lagoons, common. 
vicinum, Hag. Ponds and marshes, 
common. 
semicinctum, Say. Ponds, rare. 
rubicundulum, Say. Abundant. 
obtrusum, Hag. Abundant. 
corruptum, Hag. Humber River, one 
specimen. 
Leucorrhinia intacta, Hag. Very abundant, espe- 
cially at Grenadier Pond. 
Celithemis eponina, Dru. Grenadier Pond. 
ce elisa, Hag. Grenadier Pond. 
Tramea carolina, Linn. High Park, one specimen. 
“  lacerata, Hag. Grenadier Pond. 
ce 
Order HEMIPTERA. 
Suborder Parasiti1ca. 
Pediculidae (Lice). 
Phthirius inguinalis, Leach. 
Pediculus capitis, De G. 
. vestimenti, Leach. 
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