. Advances in marine biology: volume 17. Coral fisheries. ECOLOGY AND TAXONOMY OF Hdlimeda 133. Fig. 39. H. gigas. Holotype, Marshall Islands, Enewetak Atoll, Taylor 46-419. Actual width of specnnen is 14-3 cm. (Photograph courtesy of the Division of Biological Sciences, University of Michigan.) Nodal medullary filaments fusing completely in twos and threes, although occasionally and most particularly towards the periphery of the node uniting for only a short distance (incomplete fusion); fused groups entangled but at most adhering only slightly. Type specimen. Marshall Islands, Enewetak Atoll
. Advances in marine biology: volume 17. Coral fisheries. ECOLOGY AND TAXONOMY OF Hdlimeda 133. Fig. 39. H. gigas. Holotype, Marshall Islands, Enewetak Atoll, Taylor 46-419. Actual width of specnnen is 14-3 cm. (Photograph courtesy of the Division of Biological Sciences, University of Michigan.) Nodal medullary filaments fusing completely in twos and threes, although occasionally and most particularly towards the periphery of the node uniting for only a short distance (incomplete fusion); fused groups entangled but at most adhering only slightly. Type specimen. Marshall Islands, Enewetak Atoll, Taylor 46-419, 6 June, 1946 (MICH). Habitat. Pendant on rocks in relatively quiet water, and growing from approximately — l-5m to —46 m. In shallow water it is sometimes relatively common and at some sites it is associated with H. macrophysa. Geographic distribution. North-western Pacific Ocean. This species may initially be mistaken for a large segmented tuna or discoidea. Microscopic differences with tuna include the large surface diameters of the peripheral utricles, these averaging 115 [xm in gigas as compared to 70 [j,m in tuna and a less extensive development of the cortex in gigas as opposed to Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hillis-Colinvaux, Liewellya. London : Academic Press ; Toronto
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