REDESCRIPTION OF ANCHIPHIMEDIA-DORSALIS (CRUSTACEA, AMPHIPODA, IPHIMEDIIDAE) FROM THE ANTARCTIC, AND FUNCTIONAL-MORPHOLOGY OF MOUTHPARTS

For the first time a full description of Anchiphimedia dorsalis K. H. Barnard, 1930 is given. The functional morphology of the mouthparts and the anatomy of the digestive canal exhibit several unique features. Maxilla 1 has a short palp; the distal endite bears 45-60 setae. which might be used for scraping particles together. The laterodistal margins of the distal maxillipedal endites are curved anteriorly and could be used for brushing particles towards the other mouthparts. The midgut-gland has four caeca; the ventral cacca are very short. The gut of the examined specimens contained only fine detritus and sand grains.