ftY G. t. PLAYFAItf. 621 



oil the inner surface, no pyienoid in the specimens observed, 

 stigma median. The nearest form seems to be Ghl. media 

 Klebs, Beding. d. FortpHanz., p.425, f.l2, (Wille, Alg. Notizen 

 ix.-xiv., p. 140, T. iv., f.ll) which, however, is more pointed in 

 front, and has a siibapical stigma and a pyrenoid at the side in 

 the middle. 



Chlamydomoxas angulosa v. obesa, n.var. (PI. Iv., f.24). 



Cellulae prje latitudine breviores, crasste, subglobosse; de singuHs 

 rebus ut in forma typica. 



Long. 16, lat. 14/jt. Lismore (350). 



Cf. Dill, Gatt. Chlamyd., p.l5, T. v., f.21-25; Wille, I.e., p.l41, 

 T. iv., f.1.3. Oiu" form agrees in all details with Dill's type, but 

 in shape it is subgiobose, almost subquadrate, instead of oval. 

 Dill's figure works out at 20 x 14/^.. 



Chlamydomonas pisiFORMis V. ocELLATA, n.var. (PL Iv., f.25). 



Cellulw ambitu formte typical consimiles; chloroplastide autem 

 parietali; in media cellula locello magno pyrenoideiii continente: 

 stigmate nullo viso. 



Long, 17, lat. 8i: cell, matric. long. 25, lat. 19//. 



Lismore (350). 



Cf. Dill, I.e., p.l4, T. 5, f. 13-19: Wille, I.e., p.l3S, T. iv., f. 8. 

 Only noted as autospores, 2, 4, 8 to the mother-cell. In shape, 

 they agree exactly with the type, even to the slight curve to one 

 side, and the apical projection, broad from the front and wick- 

 like from the side. The chloroplast, however, is parietal, and 

 the centre of the cell occupied by a large locellus containing a 

 pyrenoid (diam. 5/x). No stigma, and the nucleus not discernible. 



Genus C h l o r o (i o n i u .-si Ehr. 

 Chlorogonium minimum, n.sp. (Pl.lv., f.26). 

 Cellula? minutte, gracillimae, fusiforines, pone acutisshna^ froiite 

 rostrat?e; membrana tenuissima, arete adhyerente; chloroplastide 

 tenuissima, homogenea, parietali; in media cellula locello hyalino 

 (hiucleum contingente); flageUis 2, ex apice oblique orientibus; 

 stigmate distincto, bacilliformi, subapicali; pyrenoide nulla. 



