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
Western school whiting sides of the fish, often overlapping a distinct silvery white laterally positioned band. This band begins behind the operculum and continues to the caudal fin base. The spinous dorsal fin is whitish below grading to yellow above, with brown spots and black dusting apically. The second dorsal fin is white basally, becoming lemon yellow above with 3 rows of black blotches forming longitudinal lines across the fin. The anal fin is bright yellow with white margins, the ventrals have a pale yellow center with white margins and the caudal is yellow. The pectoral fin is pale lemon yellow to hyaline