Scientific Illustration

Parmacella valenciennes by BioDivLibrary on Flickr.

Catalogo iconografico y descriptivo de los moluscos terrestres de España, Portugal y las Baleares..
Madrid,[1875?]..
biodiversitylibrary.org/page/14394455

Ariolimax columbianus - The Pacific Banana slug’s camouflage

rhamphotheca:

An illustration of various Pulmonata (and one predator arthropod in the lower right), an informal group of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. Pulmonata was previously a formal taxon but lost its status as one in 2010. The group includes many land and freshwater families, and several marine families. Most species have a shell, but no operculum, although the group does also include several shell-less slugs. Pulmonates are hermaphroditic, and some groups possess love darts.

(illustration by H. Morin, from The Royal Natural History, 1893)

(via: Wikipedia)

slug, revisited again by ~Cephalopodwaltz

Mollusca by BioDivLibrary on Flickr.

dendroica:

Slugs by BioDivLibrary on Flickr.

Les mollusques :.
Paris :J. B. Baillière,1868..
biodiversitylibrary.org/page/11652546

n17_w1150 by BioDivLibrary on Flickr.

Mollusca & shells..
Boston,Gould & Lincoln,1852..
biodiversitylibrary.org/page/32033199

rhamphotheca:

The Kerry Spotted Slug, (Geomalacus maculosus) is a rare species of medium-sized to large (7-8 cm) air-breathing land slug. Found on the Iberian Peninsula and Southern UK, The species appears to require environments that have high humidity and acidic soil (soil with no calcium carbonate in it). The slug is mostly nocturnal or crepuscular… (read more: Wikipedia)

(image from: Monograph of the land and freshwater Mollusca of the British Isles. Testacellidae. Limacidae. Arionidae (1907), by John William Taylor)

Slugs

From: ‘The collector’s manual of British land and freshwater shells’ Second Edition by L.E.Adams (1896)

n474_w1150 by BioDivLibrary on Flickr.