PLatTe 13. 
Zygophylax chazaliei, page 15. 
well the mode of origin of the peripheral tubules. x 60. 
Fig. 2. The branching of a peripheral tube. 
7 Fig. 3. The distal end of one of the pinnae. x 60. - 
Figs. 4 and 5. Nematothecae. x 300. 
Fig. 6. Two adjoining peripheral tubes through which the hydrothecae p 
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