. Elementary lessons on insects . Fig. 32.—The lace-wing fly, Chrysopa. Two adults, a larva below on the stem and a cocoon containing a pupa under the leaf (from Kellogg.) together, channelled and closely united and pointed at the tip to make this grasping, puncturing and sucking pair. If living larvae, swept from the vegetation, be placed with a colony of aphids, the use of these jaws will be quickly demon- strated.

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Keywords: ., bookcentury1900, bookcollecti, bookdecade1920, booksubjectinsects