Also known as epiploic appendages, these are little fat-filled pouches of peritoneum projecting from the visceral peritoneum found along the free surface of the colon (large intestine) usually near the teniae
Sources:
http://www.med.umich.edu/lrc/coursepages/M1/anatomy/peritoneum_tables.html
http://www.uthscsa.edu/anatomy/Glossary.html