. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 86 ANNALS OF THE SOUTH AFRICAN MUSEUM this structure. The abductor flagelli of the first maxiHiped is stouter than that of the other two maxilHpeds and pursues a straighter and more medial course through the peduncle, its insertion being mid-ventral, while that of the second and third maxillipeds tends to be ventro-lateral. Flagellar muscle In each of the three maxillipeds, the flagellum of the exopodite has an intrinsic muscle which is responsible for its active movements in various directions. It c
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 86 ANNALS OF THE SOUTH AFRICAN MUSEUM this structure. The abductor flagelli of the first maxiHiped is stouter than that of the other two maxilHpeds and pursues a straighter and more medial course through the peduncle, its insertion being mid-ventral, while that of the second and third maxillipeds tends to be ventro-lateral. Flagellar muscle In each of the three maxillipeds, the flagellum of the exopodite has an intrinsic muscle which is responsible for its active movements in various directions. It consists of thin muscle strands arising from the base and annula- tions of the flagellum and extending down its length to an insertion in the terminal segment. (g) The secotid maxilliped (Fig. 23) The second and third maxillipeds differ from the first in being pediform and in having the same number of segments in the well-developed endopodite as in the pereiopods. Because of the coalescence of the basipodite and ischio- podite, the latter is immobile and no muscles pass into it from the basipodite. Productor and reductor muscles have, however, been established in the ischio- podite for the slight forward and backward movements of the meropodite, and the arrangement of the whole system resembles that of other abductor flag abductor exopod propod i ti s ctor propoditi s uctor dactyl opoditis reductor dactyIopoditis uctor carpopoditis uctor carpopoditis oductor meropoditis eductor meropoditis dductor exopoditis epressor g. promoter b remotor a Fig. 23. Muscles of left second maxilliped, dorsal 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 South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
