OF FICUS ROXDUHGHII. 



4. Receptacle at a considerable period after the 



Diameter of area of ostiolar bracts 



ir 



access of insect 



Breadth of zone of male flowers ... • • • • # «S5x o» 2 



Breadth of peripheral prominent area of c fi n fl ( M 



_ flowors on the ostioL face of the cavity "^ "" ** 



Thickness of receptacular wall ... ^ ** to (**5I 



Depth of stratum of gall-flowers . ' * * ^ 7 



0* 





The cavity was full of fluid and the internal surface of the wall 



5. Receptacle almost mature ; weight 387 grammes- 

 Depth of stratum of gall-flowers in some parts 



O'Ci 



The cavity contained 20c.c. of a reddish-hrown alkaline fluid f 11 



particles almost transparent when filtered, and with a speci.ic frrav! , v °„f ii , «T" Jf 



stratum of ffa -flowprs was vpw rlilnV ««^ : , l fe 1 **"* <>i 11 10 3. h 



stratum of gall-flowers was very thick, and in some places contained 8 or 9 Z 



imposed 





6. Receptacle almost mature 



<• 



Depth of ostiolar plug 



Diameter of area of male flowers occupying the centre of' ostiolar face of 



the cavity 



Breadth of peripheral area of gall-flowers around the male flowers ! .' [ 

 Thickness of the receptacular wall ' 0* 



0* i 



8 



Cavity full of fluid. Ostiolar scales now all convergent, and no longer visible from the 

 interior unless after pushing outwards the convergent flowers of the now <c ntrallv tted 

 male area. Interior of the wall of the receptacle very uneven, being covered by a series of 

 elevations and depressions (Plate IV, fig. 26). 





Characters of mature gall-receptacles to which insects have gained access 



The following are the data regarding a specimen in this condition : 



External diameter . • , 3*-7 



Diameter of prominent mass of male flowers in the centre of the ostiolar 



face of the cavity 0*^7 



Diameter of ostiolar orifice internally 0"-4 



Breadth of area around it occupied by bases of male flowers .... 0*27 



Thickness of ostiolar plug of bracts 0*.^ 



Breadth of peripheral area of ostiolar face of the cavity occupied by gall- 

 flowers 0*: to T '6 



Thickness of receptacular walls 



Depth of stratum of gall-flowers • 



0*4' to «'58 

 0"/i 



The receptacular cavity was empty, and its walls very uneven. Tin male flowers 

 had their stamens widely expanded, and formed a conspicuous rounded elevation on the 

 centre of the ostiolar space. It was only on separating the central flowers that the 



ostiolar orifice became visible. It was firmly closed by ostiolar bract , even the superficial 



Ann. Roy. Bot. Gard. Calcutta, Vol. I. Appendix. 



* 



