566 
Dr. W. H. Harvey’s Account of the Marme Botany^ ^c. 
these specimens should be referred, but I fear that author has needlessly multiplied the 
names in this genus. 
346. Enteeomobpha compressa. Submerged rocks and woodwork, everywhere. 
Order IV OSCILLATORIACEiE. 
347. Rivularia australis, n. sp. ; fronde maxima (fronde 1-1 uncias diametro) solitaria hemisphse- 
rica solida lubrica olivaceo-viridi. On rocks near low-water mark. Cape Riche (298). I 
suppose this belongs to Kiitzing’s genus Euactis, but I have not minutely examined it. It 
is the largest of the genus known to me. 
348. Rivularia sp. Eeur B. plicata, Carm. Upper end of Princess Royal Harbour, on stones 
and wood in shallow water (19). 
349. Calotheix Harv.? Parasitical on AZy®, in tide-pools at Cape Riche (299). This 
requires to be compared with the European plant, to which, if not the same, it is closely 
related. 
350. Calotheix limbata, MS. Littoral rocks, Rottnest (277). 
351. Calotheix sp. Cape Riche (334). 
352. Calotheix sp. Cape Riche (335). I cannot at present identify these species; and have be- 
sides two others, collected in smaller quantity. 
At Sea, September 4, 1854. 
