Caudal mucous pit on some species included: Caudal mucous pit The caudal mucous pit, or caudal mucous horn, is an anatomical structure on the tail end of the foot of various land snails and slugs, terrestrial pulmonate gastropod mollusks. The function of this pit is the resorption of mucus when the gastropod is moving (see also Muratov 1999). An incorrect and yet often-used term for this structure is the "caudal gland". This area also used to be referred to by the term "caudal pore". Families of snails and slug where a caudal mucous pit exists in every species included: Families/subfamilies where is caudal
Ide (fish) German "orf", through the Latin "orphus" meaning a "sea fish" or "sea perch" which in turn derives from the Greek "orphōs". The generic name "Leuciscus" is derived from the Greek word "leykiskos" which means "white mullet". There are two recognised subspecies of the ide: The ide is a rather plump, sturdily built fish with a deep body, although not especially so. The peduncle of the caudal fin is thick. When they are small ide have dark backs and silvery sides but older fish develop a golden sheen along the flanks. At all ages the eye is yellow and the pectoral