PROC. ENTOMOL. SOC. WASH. 84(3). 1982. pp. 513-520 AN ANNOTATED CHECKLIST OF THE CADDISFLIES (TRICHOPTERA) OF MISSISSIPPI AND SOUTHEASTERN LOUISIANA. PART III: LIMNEPHILOIDEA AND CONCLUSIONS' Ralph W. Holzenthal, Steven C. Harris, and Paul K. Lago-(RWH) Department of Entomology, Fisheries and Wildlife, Clemson Uni-versity, Clemson, South Carolina 29631; (SCH) Environmental Division, Geological Survey of Alabama and Department of Biology, University of Alabama, University, Alabama 35486; (PKL) Department of Biology, Uni-versity of Mississippi, University, Mississippi 38677. Abstract. — Distributional records for 63 species of caddisflies in the su-perfamily Limnephiloidea (Phryganeidae, Brachycentridae, Limnephilidae, Lepidostomatidae, Sericostomatidae, Odontoceridae, Molannidae, Helico-psychidae. Calamoceratidae, Leptoceridae) from Mississippi and southeast-ern Louisiana are presented and seasonal occurrence of each is indicated. Annotations for many species include notes on habitat and relative abun-dance. Of the species reported, 58 represent new state records for Missis-sippi and 60 are newly recorded from Louisiana. Faunal composition and distribution of the order in the study area are discussed. This is the third and final contribution in a three part series on the cad-disflies of Mississippi and southeastern Louisiana. In this section records are presented for 63 species in 22 genera from the families Phryganeidae, Brachycentridae, Limnephilidae, Lepidostomatidae, Sericostomatidae, Odontoceridae, Molannidae, Helicopsychidae. Calamoceratidae, and Lep-toceridae. Sixty-two percent of the species reported belong to the Lepto-ceridae. Literature records of Limnephiloidea from Mississippi and Louisiana are very few and scattered, and include the following: Hagen (1861) described Platycentropus amicus (as Hallesus) from New Orleans, Louisiana; Ross ' Technical Contribution No. 1997 of the South Carolina Agricultural Experiment Station. Clemson University. ^ Address reprint requests to junior author (PKL).