. " I II III IV V Fig. 19. Second Furcilia (continued). a, lateral view of bases of thoracic limb VI and pleopod I with, between them, thoracic limb VII, a Th. VII seen from behind ( x 83); b, gills on thoracic limbs II-VI in larva with 4 setose, i non-setose pleopods ( x 83); c, gills on thoracic limbs II-VI in larva with 5 setose pleopods ( x 83); d, pleopods I-V in larva with 3 setose, 2 non-setose pleopods ( x 35); e, pleopods I-V in larva with 4 setose, i non-setose pleopods ( x 35); /, pleopods I-V in larva with 5 setose pleopods (x 35); g, appendix interna ( x 360); h, setae within
. " I II III IV V Fig. 19. Second Furcilia (continued). a, lateral view of bases of thoracic limb VI and pleopod I with, between them, thoracic limb VII, a Th. VII seen from behind ( x 83); b, gills on thoracic limbs II-VI in larva with 4 setose, i non-setose pleopods ( x 83); c, gills on thoracic limbs II-VI in larva with 5 setose pleopods ( x 83); d, pleopods I-V in larva with 3 setose, 2 non-setose pleopods ( x 35); e, pleopods I-V in larva with 4 setose, i non-setose pleopods ( x 35); /, pleopods I-V in larva with 5 setose pleopods (x 35); g, appendix interna ( x 360); h, setae within the integument of a non-setose pleopod ( x 165). Gills. In the smaller larvae included in this stage the gills are at much the same stage of development as in the larva having five pairs of non-setose pleopods, the only ad- vance noted in the larva having three pairs of setose pleopods is that the gill of Th. V is now bilobed. In the larva with four pairs of setose pleopods the branchiae of Th. II-VI are all distinctly bilobed (Fig. 19 b). The gills of Th. II-VI in the larva with all pleopods
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
