Caudal mucous pit 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 mucous pit exists only
Ozark madtom Ozark madtom The Ozark madtom ("Noturus albater") is a freshwater fish endemic to the United States. It is one of 29 species of madtom. The Ozark madtom has a stout body and small head. A dark bar can be found at the base of the caudal fin, and the caudal fin is usually straight or slightly rounded. The pectoral fin has 9 rays, and the anal fin has 13 to 16 rays. The fish has a total length of 120 mm (4 in). The Ozark madtom are found around the upper White River and the Little Red River in the