. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. THE ANATOMY OF THE CAPE ROCK LOBSTER lOI of the latter may be repeated in describing the remaining muscles of the pleo- pod. Abduction and adduction of the lamella, however, are effected by muscles which have no homologues in either Astactis or Pandalus. The exopodite lamella is moved forward and outward by a very small abductor flagelli exopoditis, which is attached laterally in the exopodite ventral to the insertion of the abductor exopoditis. It tapers rapidly towards its dorsal insertion by a str
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. THE ANATOMY OF THE CAPE ROCK LOBSTER lOI of the latter may be repeated in describing the remaining muscles of the pleo- pod. Abduction and adduction of the lamella, however, are effected by muscles which have no homologues in either Astactis or Pandalus. The exopodite lamella is moved forward and outward by a very small abductor flagelli exopoditis, which is attached laterally in the exopodite ventral to the insertion of the abductor exopoditis. It tapers rapidly towards its dorsal insertion by a strong tendon in the middle of the proximal region of the lamella. Adductor flagelli exopoditis Inward movement of the exopodite lamella is accomplished by this rather thicker and more obvious muscle, which arises dorsally in the exopodite and spreads out ventro-laterally in the proximal part of the lamella. Flagellaris exopoditis In both sexes the thin exopodite lamella is provided with a number of strong fibres which are attached dorsally at its proximal margin. They fan out into the medial part of the lamella and cause it to bend in various directions. (b) Additional muscles in the female pleopod The endopodite is a conspicuous ramus of the female pleopod and its movements are produced by several intrinsic muscles, all of which are repeti- tions of the musculature of the exopodite. adductor basipoditis remotor redactor endopoditis, adductor exopoditis abductor endopoditis abduct end appendix i. flagei laris endopoditi s promotor dorsal rotator abductor basipod. redactor exopod. productor exopod. J, —abductor exopoditis abductor flagelli exopod iti s adductor flagei 11 exopod 1 ti s flagellaris exopoditis Fig. 29. Ventral view of muscles of left first pleopod of female. Productor and reductor endopoditis The connexion between the basipodite and the endopodite is largely membranous, but obvious medial bundles in line with the productor and. Please note that these images are ext
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
