. Carnegie Institution of Washington publication. . — B FIG. 12.—First abdominal appendage (right hand side) of Synalpheus brucei bearing external sacs of Thompsonia. X28. A. Cast skin showing external sacs (e. s.) containing nearly mature larvae. Only two sacs are still present, the others having been accidentally detached, but the round black rings (ped.) indicate their position. B. The same appendage 3 days after moulting, showing the new crop of external sacs. number of pink bodies much smaller than any observed hitherto, but with the characteristic structure of the external sac, were f
. Carnegie Institution of Washington publication. . — B FIG. 12.—First abdominal appendage (right hand side) of Synalpheus brucei bearing external sacs of Thompsonia. X28. A. Cast skin showing external sacs (e. s.) containing nearly mature larvae. Only two sacs are still present, the others having been accidentally detached, but the round black rings (ped.) indicate their position. B. The same appendage 3 days after moulting, showing the new crop of external sacs. number of pink bodies much smaller than any observed hitherto, but with the characteristic structure of the external sac, were found on the abdominal appendages. One of these was cut off and, after being examined alive, was fixed carefully. I give here two figures comparing the old external sacs on the cast skin and the new on the appendage after moulting (text-figure 12); they show that the distribution is roughly similar, but in no case are the positions identical. The new *"Diese Reduktion der Organe hangt offenbardamit zusammen, dass die Parasiten nur einmal fahig sind, Nachkommen zu produzieren, wie aus den Verhalten des Ovariums und Hodens geschlossen werden ;. 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 Carnegie Institution of Washington. Washington, Carnegie Institution of Washington
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