from C. plumaris, as well by its trifarious, not distichous, ramenta, 
as by the prominent, sharp points or aculei that roughen its 
surculus. ‘The nearest affinity, among Australian species, seems 
to be with C. Harveyi, from which it differs in the rough surcu- 
lus, and the trifarious, not five-ranked, and comparatively much 
shorter ramenta. 
C. trifaria appears to be rare; I collected but few specimens 
at Port Philip Heads, and have not yet received it from Dr. 
Miller, or any other Victorian botanist. 
Fig. 1. CavLerpa Trirarta,—the natural size. 2. Portion of the surculus, 
and of the base of a frond. 3. Section through a frond. 4. Apex of one 
of the ramenta :—maguified. 
