Mechanisms of capture and ingestion in dinoflagellates are quite diverse. Several dinoflagellates, both thecate (e.g. "Ceratium hirundinella", "Peridinium globulus") and nonthecate (e.g. "Oxyrrhis marina", "Gymnodinium" sp. and "Kofoidinium" spp.), draw prey to the sulcal region of the cell (either via water currents set up by the flagella or via pseudopodial extensions) and ingest the prey through the sulcus. In several "Protoperidinium" spp., e.g. "P. conicum", a large feeding veil — a pseudopod called the pallium — is extruded to capture prey which is subsequently digested extracellularly (= pallium-feeding). "Oblea", "Zygabikodinium", and "Diplopsalis" are the only other dinoflagellate genera known to use this particular feeding mechanism.