. The Canadian field-naturalist. 1991 GlLKINSON AND METHVEN: SUBTIDAL DISTRIBUTION OF PERIWINKLES 523 Littorina littorea Littorina saxatilis. o "'"'â "â⢠0) -D 10 ⢠E c D <D 0 40 m Jh. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ottawa Field-Naturalists' Club. Ottawa, Ottawa Field-Naturalists' Club

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Keywords: ., bookauthorottawafi, bookcentury1900, bookdecade1910, bookyear1919