824 AUSTRALIAN FRESHWATER PLANKTON, 



VOLVOCACE^. 



Genus C A r t e r i a Diesing. 

 Carteria multifilis (Fresen.) Dill, forma. 



Cellular globosa? (formfe immaturfe subglobospe, oblongse, vel 

 ovales) apicibus plerumque leviter deplaiiatis (interduni niediana 

 papilla iiistructis) vel indentatis; meinbrana teiiiii, hyalina, vel 

 dilute rufescente. 



Cell, (sphaji'ic.) diam. 22-26; (oval., oblong., vel subglob.) long. 

 24-25, lat. 22-23/x. 



Parramatta Park (97). (PI. Ivi., figs. 1-4). 



Cf. France, Der Algengatt. Carteria^ Tei'iiieszetrajzi Fiisetek, 

 xix., liS96, T. iii., t'.l-5, etc. Obtained in quantity from rain- 

 water-pools in Parramatta Park, where it showed as a pale yellow 

 cloud in the water. France found it in a somewhat similar 

 habitat ("aus dem Wasser einer grossen Strassenlache"). I 

 have hesitated, for long, to identify our specimens with the 

 European type, as they do not seem to agree very well in general 

 appearance with France's excellent, coloured figures. Apart 

 from the finely developed chloroplasts and red spot of the Hun- 

 garian specimens, ours difi'er chiefly in the shape of the cell, and 

 the indented or flattened apex, the latter usually furnished with 

 a minute papilla (alt. ca. 1/a). When full-grown, the cell is 

 spherical, but more or less irregular subglobose; oblong or oval 

 forms are common. The membrane, at first hyaline (or very 

 slightly coloured) and very thin, later becomes somewhat stouter, 

 and pale brown in colour, without markings. France gives 

 dimensions, long. 19-25, lat. 12-15/x. 



Carteria scrobiculata, n.sp. (PL Ivi., f.5-7). 



Cellulse, fronte vispe, circulatse, subcirculatas, vel oblongaj, 

 ubique rotundatse, apicibus levissime indentatis; a latere com- 

 pressie, membrana crassa, rufescente, dense scrobiculata. 



Cell. long. 18-22, lat. 18-20/x. 



Guildford (45); Lismore (263, 290). 



This form diff'ers from all the other species of Carteria, of 

 which I have any knowledge, in having a closely scrobiculate 



