Scientific Illustration

Catalogo iconografico y descriptivo de los moluscos terrestres de España, Portugal y las Baleares by BioDivLibrary on Flickr.

Madrid,[1875?]..
biodiversitylibrary.org/page/14394459

davethebad:

(via Snail 3D Anatomy Model)

danhallett:

Sketch book. Dan Hallett.

Thanks for the submission Dan!

rhamphotheca:

Strombus galeatus (Eastern pacific Giant Conch)

from:  Kiener, L. C. (1843). Spécies général et iconographie des coquilles vivantes : comprenant la collection du Muséum d’histoire naturelle de Paris, la collection Lamarck, celle du Prince Masséna … et les déecouvertes réecentes des voyageurs / par L.-C. Kiener. Vol. 4, p. 153.

lindsayholladay:

Apple snail shell study in graphite and carbon dust- actual size

biomedicalephemera:

Reproduction of the Edible Snail (Helix pomatia)

Like most gastropods, Helix pomatia is hermaphroditic - that is, they have the reproductive organs of both genders. They still engage in sexual reproduction, and the mating rituals of some land snails are truly bizarre.

When two sexually mature snails meet and determine that they’re going to mate, “love darts” will often be exchanged in a pre-mating ritual. However, these darts are not part of the insemination process; mating takes place after this exchange.

Darts don’t always hit their target (the other snail), and snails don’t always go into this “battle” with a dart prepared - snails who have never mated previously cannot create a dart, as the dart sac is not yet primed to lay down the chitin that the darts are comprised of. However, a snail who manages to hit their mate with a dart prior to mating have been shown to cause their mate to create a significantly higher number of eggs, and of those eggs, a higher percentage successfully hatch.

The Naturalists Miscellany. George Shaw, 1790.

factstofigures:

Sterrer, W. (Ed.) (1986). Marine Fauna and Flora of Bermuda. New York: John Wiley & Sons.

wallacegardens:

Common Garden Snail, Georgius Shaw, The Naturalist’s Miscellany (1790-1801). 

factstofigures:

Caption: Parasitic pyramidellids. (a) Odostomia eulimoides sucking on mantle margin of Turritella communis; (b) two individuals of O. scalaris feeding on Hydrobia ulvae.

Artist (a): Ankel, 1959

Artist (b): Ankel and Moller Christensen, 1963

Kinne, O. (Ed.). (1980). Diseases of Marine Animals. Chicester: John Wiley & Sons, Ltd.

factstofigures:

Caption: Menestho diaphana from Phascolion strombi. (a) Shell; (b) two individuals in feeding position on host; (c) egg mass of M. diaphana from siphonal canal of Nassarius sp. shell inhabited by P. strombi. Eggs are embedded in colourless, sticky mucus with adhering mud particles; (d) eggs at higher magnification.

Artist: Hylleberg Kristensen, 1970

Kinne, O. (Ed.). (1980). Diseases of Marine Animals. Chicester: John Wiley & Sons, Ltd.