PLATE 5 



EXPLANATION OF FIGURES 



19 Section of an anemone (no. 73, table 7) composed of an older region con- 

 taining a white bar and five more widely separated orange stripes, and a newer 

 region with a slightly fainter white bar and seven less widely separated orange 

 stripes. (Cf. diagram, fig. 37.) A cinclis is visible at X. X 20. 



20 Section of a small specimen probably having undergone two regenerations 

 as indicated by the character of the incomplete mesenteries. Precise positions 

 of the division planes not certain. In the latest formed area (below), c- and c^ 

 on either side of the directive mesenteries are incomplete aborally. Possibly 

 on either side the mate to c^ is an old bounding mesentery; if new, the latest 

 division occurred in exocoels. X 40. 



21 and 22 Two sections of an anemone which showed, externally, slight 

 irregularities in the distribution of its twelve orange stripes. These may have 

 been due to unequal distention of different parts of the column wall. No certain 

 external evidence of a division was present. Internally, as shown in these two 

 figures, the greater development, in the upper region, of the incomplete mesen- 

 teries, especially those of the second grade, indicates that regeneration has 

 occurred, but does not give any assurance as to the exact position of the 

 boundary between new and old. Both figures X 25. 



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