PLATE XXI 1. 



i''iii. 1. — Mt/xiUti ileceptii Kirkp. on Ijranch ol' l'olyy,(jon, nat. size, p. 27. 



Fi(i. ■>. — The s;iine encrusting a stone, nat. size. 



Fk;. ia. Surface of Fig. 2, enlarged. 



Kk;. ;i. HymediKmki areulata Thiele, % nat. size, p. 24. 



Fi(3. :!«. — Oscule of same (x 2) ; Fig. :\b, pore area (x •">) ; 'A<\ vertical section (x ri). 



Fk;. I. Hymexksmia ctigva Kirkp., nat. size, p. 24. 



Fic. ■). Hymnrhapliia rtifn Kirkp., nat. size, p. 25. 



Fk;. (>. — OjMitasponyia nldijicata Kirkp., nat. size, p, 25. 



Fig. 6ff. -Section of half of ecliiuated fibre ( X 20). 



Fki. 1 . Li^somyj-illa kanitschi Kirkp., nat. size, p. 26. 



Fk:. la. Vertical .section of same (X 20). 



Fio. X.- Axinflla siipratamescens Topsent, nat. size, p. 2;i. 



Vii\. 8a.- Longitudinal vertical section of same (x 20). 



