. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. No. 5.] THE CESTODE MOXIEZIA EXPANSA. 223 --C. FIG. 6. the remainder of the proglottid. At d a triangular depression appears in consequence of the fact that the contours of the portions a, b, and c are somewhat rounded at this point where all three meet. The same con- ditions are present in some degree on the lower surface also, so that the thickness of the body at d is very slight. Inter-proglottidal glands appear just anterior to the extra trans- verse furrow, thus showing the same relation to it as to the normal complete
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. No. 5.] THE CESTODE MOXIEZIA EXPANSA. 223 --C. FIG. 6. the remainder of the proglottid. At d a triangular depression appears in consequence of the fact that the contours of the portions a, b, and c are somewhat rounded at this point where all three meet. The same con- ditions are present in some degree on the lower surface also, so that the thickness of the body at d is very slight. Inter-proglottidal glands appear just anterior to the extra trans- verse furrow, thus showing the same relation to it as to the normal complete furrow. This is usually the case, provided the abnormal furrow attains a certain degree of depth. Figure J. This is a case of partial division seen from the ventral side. The segment is undivided at the left, and one genital mass appears. To the right of the middle, however, a short partial furrow appears on each surface, the two corresponding closely in position. The right edge shows clearly a division into two segments, and a very short furrow extends from it on to the ventral surface. In accordance with these indications of division in the right half two genital masses appear. The fact that the two partial furrows correspond so closely on the two surfaces indicates that they are distinctly the result of internal conditions. Judging from the existence of the two geni- tal masses and the short furrow at the right edge, it appears probable that division or separation exists in a cer- tain degree between the two regions, even where the actual furrows do not appear. Many other cases support this view. It would appear that the individuality of the segment must attain a certain degree of development in order to cause the formation of furrows, and that, where only partial furrows exist, the division may be in many cases more complete than the furrows indicate. The short furrows on the two surfaces bear inter-proglottidal glands like the complete Please note that these imag
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
