564 



EXPLANATION OF THE PLATES. 



AZOLlu* FIX NAT A. 



(Male Of gems and development and fecundation of the female Organs, 



(Ocula.) 



PI. CXIX. f. I., 4. Pair of organs (ovula,) with the involucruni 

 somewhat retlexed. 



„ £. V. Another pair rather more advanced ; involu- 

 crum removed. 



„ f. IN. One of these magnified, about 400 times 



„ f. IV. Ovuluin considerably more advanced, 2o0 times. 



„ f. IV. A pair of the same more advanced : under 

 slight pressure. 



„ f. VI. Fully developed ovulum, in this instance no 

 filaments were found connected with it, but 

 grume is represented projecting from the 

 foramen. 



„ f. VI. Fellow ovulum. burst accidentally ; about 300 

 times. The filaments passing out through 

 the rupture were noted to be appareutly 

 continuous with some of those projection 

 from the foramen. 

 PI. CXX. f. II. Another ovulum. the filaments are seen plainly 

 passing into the cavity, which was partly 

 filled with their disconnected joints, 300 

 times. 



PI, CXIX. f. I., 1. Confervoid filaments: undergoing certain 

 changes while attached to the axis. 550 

 times. 



PI. CXXI. f. 11. a. Pair of fully developed ovula. 



Right hand one of the same pair, more mag- 

 nified the space inside is filled with the dis- 

 jointed component parts of the protruding 

 filaments. 



PI. CXX. f. III. Pair of rather more developed ovula, the left 

 hand one burst accidentally ; both seen un- 

 der pressure. The protuberances round the 



