BY G. I. PLAYFAIR. 333 



Chi. pulvisculus stein {no7i Ehr.), Flagellaten, PI. xiv., f. vii.; 

 Chi. Pertyi Goroschankin, Chlamydomonaden, PL ii,, f. 13. 

 Spherical, generally without anterior papilla, pyrenoid circular, 

 quadrate or transversely oblong. Occasionally, the enveloping 

 membrane grows faster than the body, and shows as a rim all 

 round. Mother-cells with 4, more rarely 8, autospores ob- 

 served. Goroschankin, quoting Rabenhorst, gives the diameter 

 as 32-42 ii; the dimensions of our specimens are just half these 

 figures. Wille, Gatt, Chlamyd., p. 1*50, gives diam. 9-22 jot, 

 generally 1 4 /x. 



Chf.amydomonas monadina (Ehr.) Stein. (PI. xlii., f.13.) 



Diam. 26 fx. 



Lismore (248). With Chi. glohuLosa (258). 



Syn., Chi. Braunii Gorosch., Chlamyd., T. xiv., xv. Spherical, 

 generally without a papilla, pyrenoid band-shaped. Probably a 

 form of Chi. glohulosa Perty. Cf. Stein, PI xv., f.39. Very 

 much rarer than the foregoing. 



Chlamydomonas intermedia Chodat. 



Long. 20, lat. 15 ^. 



Lismore (242). 



Oval or oblong-oval in shape, generally without papilla. Cf. 

 Chodat, Hist. d. Protococc, PI. 22, 23; Wille, Gatt. Chlamyd., 

 T.iv., f.l5; Playfair, Syd. Water-Supply, P1.57, f.l4, 15 (size 

 13 X 10 /x). Chodat, Alg. Vertes, p. 1 35, gives dimensions (length?) 

 18-20 /x. 

 Chl. glceocystifokmis var. australis, n.var. (PI. xliv , f.lO.) 



Membrana oblonga, hyalina; cellula ipsa ovata, fronte angus- 

 tata, pyrenoidibus singulis sphsericis. 



Membr. long. 20, lat. 14; cell. long. 12, lat. 9 /x. 



Lismore (230). 



Of. Chl. glveocystiformis Dill, in Chodat, Alg. Vertes, p. 133, 

 f.61-ix., and in Wille, Algol. Notizen xi., T. iv., f. 1 7. I observed 

 the type in Sydney. Bernard notes it from Java. 

 Chl. pisiformis Dill. (PI. xliv., f.ll.) 



Long. 20-25, lat. 12-13, papill. long. 1-2, lat. 2 /x. 



Lismore (236). 



