15 14 
Fig. 12 Cross section of the same near tip, at level 12, showing the spatula cut 
off to the right. 2. A. 
Fig. 13 Cross section of the very tip of the stylet, at the level 13, of figs. 5 and 
6, showing the groove coming to the surface of the horny canula. 2. D. 
Fig. 14 Enlarged view of section across the tubule, between the levels 8 and 9 
of fig. 6 showing the sperm cells enveloped in a secretion and shut in by the shelf 
above. 2. D. 
Fig. 15 Enlarged view of section of tubule and bottom of groove, about the 
level 10 of fig. 6 showing the fewer sperm and little secretion in the tubule, sur- 
rounded by a thick horny layer. The calcified skeleton is represented as black. 
ee): 
