Australian Fucoids. In external habit it not a little resembles one 

 of the Gorgonioid corals, but examination at once shows its strict 

 relationship to several Fucoids. In the peltate leaves there is a 

 manifest affinity with Turbinaria, and in the fructification with 

 Carpoglosmm, ; to neither of which genera does Scaberia bear 

 much external resemblance. Among the Algse perhaps that are 

 externally similar none approach nearer than Polypliacum and 

 Thamnodoniuvi, both genera of " Bhoclospermece," and therefore 

 widely removed in affinity, however similar they may be in de- 

 velopment of the frond, or processes of the surface. 



This is one of the Algse which appears to be always in fruit ; 

 at least, in the many specimens which have passed through my 

 hands, I have never failed to find spore-cavities, either filled 

 with spores and antheridia, or having just discharged their con- 

 tents. 



Fig. 1. Scaberia Agakdhii, — the natural size. 2. Eront view of a peltate 

 leaf. 3. Back view of the same. 4. Section through the upper surface of 

 a fertile leaf. 5. A spore. 6. Some autheridia, — variously magnified. 



