CHE \l-«. i. OF < u\l\|u.\\VKA]/NI WW U I \- 



17 



studied the Victoria Land forms, and in their description enumerated eleven lull v- 

 named species, while Foslie described a calcareous alga. The lisl includes 



Geminocarpus geminatus (Hook, and Harv. ) Skottsb. 



Desmarestia compressa (Reinsch.) Skottsb. 



Lessonia simulans < repp. 



Phyllogigas grandifolius (Gepp) Skottsb. 



Iridcea cordata (Turn.) J.Ag. 



Phyllophora autarch at (Jcpp. 



Gracilaria simplex Gepp. 



G. dumontioides ( I [arv. ) ( repp. 



Plocamium coccineum Lyngb. 



Delesseria quercifolia Bory. 



Spongoclonium orthocladum Gepp. 



Lithothamnion coulmanicum Fosl. 



A Zonaria and a third Gracilaria were ao1 definitely identified. Thus eighl 

 species are known as common to both Victoria Land and Commonwealth Bay. Six 

 species were found in Commonwealth Bay which were not noted in Victoria Land, 

 and as many, including the not fully determined forms, were found on the coasts "I 

 Victoria Land and were not noted in Commonwealth Bay. It sect--.. n presenl 

 evidence, that the algal flora in both regions is very limited in number of species. 

 The majority of species are common to the two; others may really be so, but it seems 

 not unlikely that the prevailing currents flowing east have aided in the conveyance 

 of more kinds to the more westerly region. 



DESCRIPTION OF THE PLATES. 



Plate 1. 



Fig. 1. Phyllogigas grandifolius. Stage 1. 



Fig. 2. Phyllogigas grandifolius. Young 



plant showing attachment. 



Plate 2. 

 Phyllogigas (jut ndifol ins. Stage '1. 



Plate 3. 



Phyllogigas grandifolius. Forms of the 

 terminal segment. 



Plate 4. 



( 'hcetomorpha Mawsoni. 



Fig. 1. Single filament, natural size. 

 Figs. •_'. 3. Upper and lower cells. 



Platk 5. 



Iridcea Mawsoni. 



Plate 6. 



( 'allymenia antarctic i. 



Fig. 1. Sterile plant, natural size. 



Plate 6. — continued. 

 Pig. 'I. Frond bearing cystocarps, natu- 

 ral size. 

 Fig. 3. Cross-section of frond. 



Plate 7. 

 Plocamium voce on um. 



Pigs, a, b, from ( ommonwealth Lav. 

 Figs, c, (1, from Eden, New South 

 Wales. 



Platk 8. 



Figs. 1. 2. Schizoneura quercifolia, natu- 

 ral size. 



Figs. •*>, 4. Prasiola crispa, much magni- 

 fied. 



Plate 9. 



Fig. 1. Gracilaria simplex, natural size. 

 Fig. l'. ( !ross-sed ion of frond of I • 



laria simpU x. 

 Fig. 3. Cross-section of frond of Iridcea 



Mawson , 



