PLATE 6 
EXPLANATION OF FIGURES 
Diagrams showing the successive stages in the ejaculation of a spermatophore. 
For simplicity everything not necessary for understanding the process has been 
omitted from these figures. Thus the cap, the inner membrane and spiral fila- 
ment, and the inner tunic are not shown. 
37 Diagram of the spermatophore ready for ejaculation. 
38 Beginning of the process of ejaculation. The evagination of the ejac- 
ulatory apparatus, represented here by the middle and outer membranes. 
39 Near the end of the evagination of the ejaculatory apparatus, showing 
the position of cement, sperm reservoir membrane (represented here by the outer 
membrane), and spermatozoa. 
40 Sperm reservoir with filled spermatozoa, and the cement body ruptured. 
41 The end of the process. The separation of the discarded case and the 
filled reservoir. 
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