This fucoid, so far as known, is limited to Western Australia, 

 but found from one end of the colony to the other. A glance 

 at the figure is sufficient to show how readily it may be known 

 from C. quercifolium (Plate XLIIL), the only other West Austra- 

 lian species ; and it is still less like C. confluens, the East Austra- 

 lian species. As already noticed under Plate XLIIL, the genus 

 Carpoglossum is scarcely distinct, on the one side from Myrio- 

 desma, and on the other from Fucodiimi ; or indeed from Fucus. 



Pig. 1. Carpoglossum angustifolium, — the natural size. 3. A receptacle, 

 or fertile pinnule. 3. Cross section, showing two spore-cavities {scaphidia), 

 and spores in situ. 4. A spore : — the latter figures variously magnified. 



