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
Amblyceps Amblyceps Amblyceps is a genus of fish in the family Amblycipitidae. The genera "Amblyceps" and "Liobagrus" are sister group pair that is, in turn, sister to "Xiurenbagrus". These species are easily distinguished by the presence of pinnate processes along the median caudal-fin rays (although these processes may be poorly developed in some species), a prominent cup-like skin flap above the base of the pectoral spine and the adipose fin largely separate from the caudal fin. In most species the caudal fin is deeply forked; "A. apangi" and "A. murraystuarti" differ in having their caudal fin truncate. "Amblyceps" species may reach