4S3 



1. Waited or rugose operculum. 



E. alpina (figs. 2a, 4a, Plate 41) (the E. elceopJior.a (fig. 16, Plate 83). 



rugosity often in parallel ridges). 

 E. capitellata (fig. 126, Plate 37). 

 E. coccifera (fig. 46, Plate 28). 

 E. coriacea (tuberculate-corrugate). 



(See also Part VIII, p. 217, under E. capitellata, Part IX, p. 259, under E. alpina.) 



E. erythrocorys. 



E. globulus (fig. 3, Plate 79). 



E. stricta (fig. 13a, Plate 43). 



2. Operculum ribbed as well as calyx-tube. 



E. albens. 



E. alpina (fig. 2a, Plate 41). 



E. Clelandi. 



E. corrugata. 



E. diptera. 



E. goniantha (Plate 18). 



E. FlocJdonice. 



E. Griffithsii. 



E. Lehmanni. 



E. incrassata. 



E. pachyphylla var. sessilis. 



E. pyriformis (fig. la", Plate 76). 



E. pyriformis var. Kingsmillii. 



E. Shirleyi. 



E. Le Souefti (fig. 66, Plate 69). 



E. torquata (fig. 6a, Plate 13). 



E. tetrodonta. 



E. de Beuzevillei. 



E. Planchoniana. 



E. miniata. 



E. ptycliocarpa. 



(Under Calyx-tube, p. 474, will be found a list of species in which the ribbing is 

 confined to the calyx-tube.) 



3. Ribbing confined to operculum. 

 E. dumosa (fig. 6a, Plate 16). 



Comparative Length of Operculum and Calyx-tube. 



" The second character generally made use of in books, the comparative length of the operculum 

 and calyx-tube, is too indefinite for practical use." (B. Fl. iii, 186.) 



" The opercula of the flowers sometimes show good characteristics, distinctive of the species or 

 the group of species by their shape, and especially by their length, compared to that of the calyx-tube. 

 In a large number of species they are sensibly of the same length as the latter ; in others they are much 

 longer or much shorter. The operculum is from two to four or five times longer than in — 



E. Lehmanni. E. cornuia. 



E. occidentalis. E. tereticornis. 



E. amplifolia. E. redunca. 



It is much shorter, often rounded in the shape of a hemispherical cap, or even almost flat in — ■ 

 E. coccifera. E. amygialina, 



E. Andreana. E. calophylla. 



(Naudin, 2nd Mem., 18, 1883.) 



