10 THE CANADIAN ENTOMOLOGIST. 



A quarter of an hour's walk southeast brings us to our favorite 

 lunching ground — a huge pine tree surrounded by glacial boulders- 

 right at the top of a steep slope facing south ; for we are on a table- 

 land here, some 300 feet above Lake Ontario, with a magnificent 

 view, east, west and south. This is probably the old shore line ot 

 Lake Ontario — indeed, a few miles west there are clear traces ot 

 an old beach five or six miles north of the Lake's present boundary 

 The top of this hypothetical cliff overlooking an ancient Lake 

 Ontario is clearly marked east and west by its fringe of white pine. 

 East of us there must have been a magnificent bay, for the edge ot 

 the tableland recedes in a sharp curve for nearly a mile north, and 

 then comes forward again with a sinuous sweep to the east. Out ot 

 the two corners of this bay now proceed southwest and southeast 

 two little trout streams whose union half-way down the sloping 

 valley results in Gage's Creek, a stream that meanders along through 

 five or six miles of level farm land and at last reaches the lake just 

 east of Trinity College School. 



After lunch we descend the slope to a rough meadow at the 

 foot on the edge of a tamarack swamp. Here we can examine some 

 genera of Tribe IX of Chrysomelians; on the golden-rod, which 

 earlier in the year was badly eaten by the larva of Trirhabda 

 canadensis, we see the mature insect — a large soft-winged beetle ot 

 a yellowish colour with a black or dark grey line on the outside ot 

 its wing covers and a sutural stripe of the same down the centre ot 

 the back. Later in the year you will find two species of Diahrotica, 

 commonly known as the spotted and the striped kind, respectively, 

 of Squash beetle, their favorite food (especially in the larval state 

 being cucumber and melon vines. A third genus of this tribe I got 

 two speciriiens of, on the edge of the swamp south of this meadow, 

 but I only once have found it abundant, and that was in the Al- 

 gonquin Park, in a marshy bay at the shore of Cache Lake. It i.> 

 said to be rare, and Blatchley states its food-plant to be Arrow 

 Arum (Peltandra) . I found hundreds of it, feeding on a small 

 species of the Skull Cap or Scutellaria; it is oblong, soft-winged, 

 light yellow-brown in colour, with two black patches on each wing- 

 cover — a small one at the base and a large one near the apex — it* 

 name is Phyllobrotica discoidea. One more genus is represented 

 here- Galerucella decora — on the willow, and htteola on elm shoots 



