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a.

View in Quinnipiac Marsh, New Haven, before ditching.

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b. Larva of apple twig miner. Enlarged twelve times.

C.

Mines in bark of apple twigs. Natural size.

MOSQUITO ELIMINATION WORK AND APPLE TWIG MINER.

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a. Larval nests of spiræa leaf roller. Natural size.

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d. Stems of evening primrose tunneled by weevils. Natural size. SPIRAEA LEAF ROLLER: LARGER PINE WEEVIL: INFESTED STEMS OF EVENING PRIMROSE.

WORK OF THE LARGER PINE WEEVIL.

Young stone pine, Pinus cembra, from nursery, injured by weevils.

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a.

Pupal cells in trunk of red pine.

b.

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