. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 326 DONALD M. MAYNARD mdEm. FIGURE 7. Second maxilla of Callinectes, showing muscles of coxopodite. AcIIm, musculus adductor coxopoditis II maxillae (no. 60, Cochran) ; aellm, musculus adductor endopoditis II maxillae (no. 61, Cochran) ; end 1, first endite of coxopodite; end 2, second endite of coxopodite; dcllm, musculus distalis coxopoditis II maxillae; mdllm, musculus depressor II maxillae (no. 59, Cochran) ; pcllm, musculus proximalis coxopoditis II maxillae; scg, scaphognathite. contains secretory granules and will be
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 326 DONALD M. MAYNARD mdEm. FIGURE 7. Second maxilla of Callinectes, showing muscles of coxopodite. AcIIm, musculus adductor coxopoditis II maxillae (no. 60, Cochran) ; aellm, musculus adductor endopoditis II maxillae (no. 61, Cochran) ; end 1, first endite of coxopodite; end 2, second endite of coxopodite; dcllm, musculus distalis coxopoditis II maxillae; mdllm, musculus depressor II maxillae (no. 59, Cochran) ; pcllm, musculus proximalis coxopoditis II maxillae; scg, scaphognathite. contains secretory granules and will be considered the post-commissure organ. The second branch of the post-commissural nerve innervates a muscle tentatively identi- fied as the musculus dorsoventralis anterior (mda). This is possibly homologous with the "moulting muscle" in shrimp (Knowles, 1953). In general, the entire anterior-ventral portion of the crab thorax is filled with stomach, hepatopancreas, or ramifications of the bladder. Venous haemolymph flow must therefore be largely confined to channels or spaces among the various viscera. The anterior third of the post-commissure organ is located across such a channel, outlined with dashes in Figure 6, which passes dorsoventrally between bladder protuberances beneath the stomach. Like the other neurohaemal structures of the thorax, the post-commissure organ is in a position to be continually bathed by flowing, venous 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
