334 FRESHWATER ALG^ OF LISMORE DISTRICT, 



Cf. Dill, Chlamyd., p.U, T.5, f.13-19; Wille, Gatt. Chlamyd., 

 p.l38, T. iv., f.8. The latter gives dimensions, long. 18-24, lat. 

 11-14 /x. The papilla in this species is apt to mislead. From 

 the front, it is sometimes very indistinct, showing as a short 

 truncated cone, but, from the side, it is quite evident and ap- 

 pears as a short, rod-like projection (long. 1-2, lat. 1 /x) unlike 

 that of any other species. All the forms of Chi. pisiformis were 

 alike in this respect. 



Var. CYLINDRACEA, n.var. (PL xliv., f.l2.) 



Cellulse oblongse vel cylindracese nee postice attenuatse; angulis 

 rotundatis; ceteris ut in f. typica. 



Long. 16-26, lat. 11-16 /a. 



Lismore(236, 246, 247, 248, 260). 



Probably the mature form of the type, which is more or less 

 cylindrical in front but attenuate behind. As in all species of 

 Chlamydomonas, the pyrenoid is sometimes wanting. This form 

 is too short for Chi. gr'andis Stein, Flagellaten, PI. xv., f.47, 49, 

 (long. 28-40, lat. 8-12 /x in Wille, I.e., p. 146) which is the only 

 strictly cylindrical species, and which besides has two pyrenoids 

 to the cell. From Chi. Steinii Goroschankin, (founded on Stein's 

 CM. grandis, PI. xv., f.48, cf. Goroschankin, Chlamyd, PI, ii., 

 f.l, 2) it is distinguishable by the absence of the longitudinal 

 ridges in the chloroplast. 



Var. ovALis, n.var. (PL xliii., f.l; PL xliv., f.l 3.) 



Forma ovalis; ceteris ut in f. typica. 



Long. 16-22, lat. 12-17 /x. 



Lismore(236, 247). Wyrallah. Cum priori. 

 Var. OBESA, n.var. (PL xliv., f.l 4, 15.) 



Forma oblonga prse longitudine latior, angulis late-rotundatis; 

 ceteris ut in f. typica. 



Long. 12-22, lat. 10-16 /x. 



Lismore (236, 248, 260). Cum prioris duabus. 



This and the preceding form are certainly growing forms of 

 the type. 



Chl. DeBaryana Gorosch., f. (PL xliv., f.l 6.) 



Long. 14, lat. 12 /x. Pyrenoidibus nullis visis. 



Lismore (236). 



