medial line to the margin. In these latter individuals the colour is more 

 opaque, somewhat glaucous, with a cupreous lustre, and the surface is 

 more strongly striate. Intermediate forms may be found. Fruit, observed 

 only on the first noticed variety, consists of large, effuse, oblong or linear 

 sori, one or two, rarely more, bursting through the surface of each fertile 

 lamina, near its base; the spores are obovoid, and lie among closely set, 

 erect, jointed threads or paranemata. The colour is a deep greenish-olive, 

 sometimes glaucous, and somewhat foxy in age. The substance is rigid, 

 and the plant does not adhere to paper in drying. 



This pretty species was originally described from a few frag- 

 mentary specimens sent by Dr. Sinclair from New Zealand. It 

 is therefore satisfactory, on receiving more complete and nume- 

 rous specimens, to have but little to alter in our former descrip- 

 tion. The chief matter to add is to notice the laciniated variety 

 (fig. 2), which, if it came from a different locality, might pass for 

 another species. Having however seen both varieties growing 

 together in abundance, and observed intermediate forms between 

 them, I have no hesitation in regarding them as specifically the 

 same. 



Z. Sinclairii differs from its nearest allies in the elongated, 

 thread-like stems and branches, and in the very narrow seg- 

 ments ; which, though laterally fimbriated, are seldom vertically- 

 cloven. 



Fig. 1. Zonarla Sinclairii; normal form. 2. Lacerated variety: — both of 

 the natural size. 3. Upper portion of a lamina, with sori. 4. Small por- 

 tion, to show the surface-cells. 5. Section of frond, and sorus, showing 

 spores and paranemata in situ : — the latter figures more or less magnified. 



