By Thomas E. Burke
Primarily an id consultant, this richly illustrated quantity bargains entire info at the variety of terrestrial mollusk shapes, sizes, and features. It offers an outline in their habitat standards in addition to information of land snail and slug ecology, assortment and maintenance tools, and biogeography.
Land Snails and Slugs of the Pacific Northwest is an important reference for biologists, horticulturalists, gardeners, and naturalists, and somebody wishing to spot species within the field.
• id keys and species money owed for many of the 245 taxa of terrestrial slugs and snails within the region
• 280 full-color images of one hundred fifty five species and subspecies
• diversity maps for many species
Read or Download Land Snails and Slugs of the Pacific Northwest PDF
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Additional info for Land Snails and Slugs of the Pacific Northwest
F/ff] (b) Apertural lip thin, not flared or reflected; expanded only at the columellar margin. 8 to 3 mm high with 5½ to 7 whorls. No crest or sinulus. . . . . . . . . . . . . . . . . . . Genus: Columella, p. 97 (bb) Apertural lip flared or reflected. . . . . . . . . . . . . . [c/cc] (c) Shell of about 4½ rapidly enlarging whorls, about 2 mm high, and strongly ovately-conic. . . . . . . . . . . Nearctula dalliana, p. 75 to 4 mm high. Apertural lip reflected following a constriction of the whorl .
19] 18b Shell diameters less than 30 mm. Colored spiral bands lacking. Aperture lip may or may not be well reflected. . . . . . . . .  19a Imperforate as adults, or if greater than 40 mm wide then may be rimately umbilicate; or immature Cepaea may be perforate. Shells more or less globose, moderately large to quite large. Usually with colored spiral bands (sometimes lacking). Aperture lip narrowly or not at all reflected in fully adult specimens. Introduced garden pests in North America.
Sculpture of either microscopic spiral striae, or low ribs extending around the whorls and cut into beaded sculpture by coarser spiral striae. . . . . . . . . . . . . . . Family: Haplotrematidae, p. 122 Key to the Genera of Haplotrematidae (a Shell larger, to 29 mm wide in 5 to 5½ whorls (specimens from the eastern part of its range may be smaller). Color light greenish, greenish-brown, or yellowish-brown. Upper (palatal) lip margin flattened or slightly deflected. Sculpturing of growth-wrinkles and very fine, microscopic spiral striae.