High Quality Content by WIKIPEDIA articles! Saccolaimus is a genus of sac-winged bat in the Emballonuridae family. It contains the following species: Yellow-Bellied Pouched Bat (Saccolaimus flaviventris); Troughton's Pouched Bat (Saccolaimus mixtus); Pel's Pouched Bat (Saccolaimus peli); Naked-Rumped Pouched Bat (Saccolaimus saccolaimus). These polychates are usually between 2 and 10 mm in length and 500 m wide. They have reduced parapodia and are considered a true interstitial species, incapable of burrowing through finer sediments.