536 
Dr. W. H. Haevey’s Account of the Marine Botany of 
25. Dictyota Kunthii, Ag. Key West and Kottnest (81 and 225). 
26. T>icrYOTAfastigiata, Send. Abundant at Cape Eiche and Fremantle (167). K truB Dictyota. 
27. Dictyota radicans, n. sp. ; fronde estuposa stipitata basi fibris crassis sparsis e stipite et lamina 
emissis radicante dicliotomo-pinnatifida, segmentis cuneatis, lateralibus erectis, sinubus 
angustis, apicibus obtusissimis ; soris effusis in medio parte frondis collectis. Eottnest and 
Garden Island (184). This species is readily marked by its rooting by a few rope-like fila- 
ments. 
28. Dictyota pamculata, J. A.g. Common (14). If I rightly understand this plant it varies much 
in breadth and degree of ramification. 
29 . Dictyota yiiTccIlcttaj A.g,? D, fninov^ Sond. Excessively common in Princess Eoyal Harbour, 
King George’s Sound, and elsewhere. In summer it comes ashore in vast banks, and is often 
the only plant raised from the bottom, by the dredge or hooks, in shallow water (24). 
30. Dictyota dichotoma. King George’s Sound and Eottnest (15). 
31. Dictyota ciliata, J. Ag. ? Carnac and Eottnest Islands, on shallow reefs, growing with D. 
dichotoma, from which its greener colour and ciliate margins best distinguish it (154). 
32. Stilophoka Lynghycei, J. Ag. Princess Eoyal Harbour in summer, very common (25). 
33. Hydeoclatiieus cancellatus, Bory. Cape Eiche, Fremantle, and Eottnest (183). 
34. Asperococcus sinuosus, Ag. King George’s Sound and Eottnest, &c. (27). 
3o. Asperococcus Turneri, Hook. A, bidlosus, Auct. King George’s Sound and Fremantle (26). 
36. Asperococcus echinatus, Lx. King George’s Sound ( ). 
Order V.— CHOEDAEIACEiE. 
37. Cladosipiion? sp. . . . King George’s Sound (17). This has the habit oi Mesogloia virescens^ 
and I should so name it, but that the frond is certainly hollow, which character would put 
it in Cladosipiion. I am by no means, however, satisfied that this is a character of any generic 
importance in these plants. 
38. MEsoGLOiAyi/wTO, n. sp.; fronde simplici v. ramo uno v. altero donata, basi et apice attenuata. 
King George’s Sound (82). 
Order VI ECTOCAEPACEiE. 
39- SpHACELARiAyiawfcMtoa, Suhr. Cape Eiche (297). 
40. Sphacelaeia Novas Ilollandm, Sond. Cape Eiche, on rocks and shells in shallow water, com- 
mon. Dredged at Fremantle (296). 
41. Sphacelaeia cirrhosa, Ag. On Zostera leaves, Fremantle, common (153). 
42. Ectocarpus siliculosus, Lyngb. Very abundant at King George’s Sound, in winter. Just 
commencing at Kottnest in June; and at Cape Eiche in March (322). 
