Land Snails and Slugs of the Pacific Northwest
Publication Year: 2013
Published by: Oregon State University Press
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My study of the inland mollusks of the Pacific northwest over the past 35 years has been incidental to my employment as a wildlife biologist. during that time, i have communicated with many individuals regarding the molluscan taxa and have con-sulted with many agency personnel and consultants regarding specific questions. every question and every specimen sent to me has provided a learning experi-...
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...this work is intended as a guide for the identification of land snails and slugs of the Pacific northwest, for use by biologists and other interested individuals who wish to identify most species in the field or laboratory without the necessity of dissecting the animals or sending them to a genetics laboratory. while not all species can be positively identified without the aid of dissection or molecular analysis, with this ...
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...this is a list of the land snail and slug species of the Pacific northwest (Pnw) region of the united States. following standard zoological nomenclature, the gen-era and species are italicised. Many subspecies are included, but subgenera are included only if so doing aids in species identification (i.e., by grouping species that share similar recognizable characteristics). the authority follows the species or ...
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...gastropods that breathe through gills and have an operculum that closes the aperture Littorina subrotundata (carpenter, 1864) Newcomb’s Littorine SnailSynonyms: Algamorda subrotundata; Algamorda newcombiana (Hemphill, 1877) Description: a snail of intertidal salt marshes, the shell is higher than wide, turbinate, with a rather globose body whorl and a conical spire tapering to an acute apex. the aper-...
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...the following taxa are those commonly known as slugs, the shells of which are reduced and completely enclosed within the mantle or, if visible, are too small for the animal to withdraw into. Vitrina is usually thought of as a snail, having a shell that covers most of the body, but it is included in the same superfamily as many of the old-world slugs; with its large aperture and body whorl, and small early whorls, the animal is not completely ...
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Page Count: 344
Publication Year: 2013