On some maerid genera (Crustacea, Amphipoda, Maeridae) collected by the Hourglass Cruises (Florida). Part 1: Genera Anamaera, Ceradocus, Clessidra gen. nov., Jerbarnia, Maera, Meximaera, with a key to world Ceradocus. Journal of Natural History, 43(33-34) 2009: 2057-2086. 2075 [Zoological Record Volume 145]