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Horizontal: Characterized by upper surface of pubic hair terminating in a horizontal line with no hair extending to the abdomen.; Sagittal: Resembles the first but with the addition of a narrow vertical band of hair extending from the pubic hair towards the navel, often slang called a 'Treasure Trail' or 'Happy Trail'.
The snail takes 30–40 days to hatch and is then considered young (before sexual maturity). Sexual maturity begins between 4 and 16 months after hatching. The snail is relatively fast moving at about 8 mm/s. [3] The snail has a light grey or brown body, with its lower tentacles being long and almost touching the ground.
In this family of snails, the male phase ends in December, followed by an egg maturation phase, and ends with oviposition, the act of laying eggs during May of the following year. Phylogenetic evidence for this is present based on the overall condition of the gonads especially in the degree of development of the genital ducts. [7]
Mucus is produced by a large gland located below the snail's mouth. [5] The foot of gastropods is covered with a thin layer of this mucus, which is used for a variety of functions, including locomotion, adherence, lubrication, repulsing predators, recognizing other snails, following a trail to a known destination and during reproduction.
The mating of gastropods is a vast and varied topic, because the taxonomic class Gastropoda is very large and diverse, a group comprising sea snails and sea slugs, freshwater snails and land snails and slugs. Gastropods are second only to the class Insecta in terms of total number of species.
Littoraria pintado is a species of snails in the family periwinkle. Individuals can grow to 10 mm. They have sexual reproduction. Length, 9 mm; diameter, 5 mm. Shell: conic-turbinate; with microscopic spiral striae; purple-gray freckled with red-brown. Spire: five to nine moderately convex whorls; suture moderately impressed.
The Hokusai Snail, designed by Fiona Blair. The Bellissimo snail at Old Steine, Brighton. Snailspace was an art installation and trail organised by hospice charity Martlets Hospice in cooperation with Wild in Art [1] from 15 September to 18 November 2018. [2] It featured 50 Fibreglass Snails scattered around the city of Brighton, East Sussex ...
Eye of a snail. 1 - anterior chamber, 2 - lens, 3 - retina, 4 - optic nerve. Drawing of cross section of the eye of Helix pomatia. 1 - lens 2 - olfactory epithelium 3 - corneal epithelium 4 - corneal endothelium 5 - retina 6 - layer with rod cells 7 - fibrous connective tissue layer 8 - nerve of the eye