— Plate 25. — 



Fig. I. — Utricularia Deightonii (Ms. name) aff. peltata. Sagittal section ) 



of trap. ■• j 



Fig. 2. — Sagittal section of entrance to trap of U. peltata. | 



Fig. 3. — The same, of trap of U. gibha showing very approximately the j 



normal (but not set) posture of the door and velum. I 



Fig. 4. — Profile of the door and velum in the set posture, in an entirely 

 whole trap of U. emarginata. The lens has, of necessity, to penetrate 

 a considerable thickness of tissues, and hence a sharp picture is unob- 

 tainable. The velum is seen as a bulbous mass just above the thresh- 

 old and in front of the lower door edge. 



Fig. 5. — Sagittal section of door and velum, U. gibha — the same as in j 



fig. 3, but at higher magnification to show details of structure. < 



Fig. 6. — View as from the inside of the trap of the middle reach of the ; 



velum in U. vulgaris. 



Fig. 7. — U. gibba. Transverse section of the threshold with the velum, j 



from which its origin can be discerned. . 



Fig. 8. — The same. View of the velum as one looks into the entrance. 



Fig. 9. — U. intermedia (or U. vulgaris). View looking down on the pave- , 



ment, showing, however, only a narrow middle fore and aft strip. 

 The velum is at the lower edge of the picture. The outer, middle and 

 inner zones are discernible. 



