. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Deep-Sea Protobranchs • Sanders and Allen 251 heart posterior. anterior kidney Figure 12. Dorsal, semidiagrammatic view of the body and mantle organs of Mkrogloma yongei. Shell minute, robust, with strong concen- tric lines particularly along the shell margin and with faint radiating striae; subovate in outline and extended anteriorly; dorsal margin straight; posterior margin short and smoothly rounded; anterior edge long, with the dorso-anterior margin weakly convex and slightly longer than the more convex venti'o-an
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Deep-Sea Protobranchs • Sanders and Allen 251 heart posterior. anterior kidney Figure 12. Dorsal, semidiagrammatic view of the body and mantle organs of Mkrogloma yongei. Shell minute, robust, with strong concen- tric lines particularly along the shell margin and with faint radiating striae; subovate in outline and extended anteriorly; dorsal margin straight; posterior margin short and smoothly rounded; anterior edge long, with the dorso-anterior margin weakly convex and slightly longer than the more convex venti'o-anterior edge; ventral margin weakly though evenly convex; umbos not promi- nent, low in profile, posterior in position and mediallv directed; neither lunule nor escutcheon present. Hinge plate moder- ately strong with a large, bean-shaped am- phidetic internal ligament; posterior hinge plate shorter and straighter than the slightly ventrally sloping anterior hinge plate. Three moderately stiong chevron-shaped ovum stomach digestive gland hind gut. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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