BY G. I. PLAYFAIR. 119 



tig. 18, var. intermedia, Klebs and p. 94 where he says: "eette variete est charae- 

 teiisee par la presence au-dessus et an-dessous du noyau de quelqiies longs 

 batonnets de paramylon assez gros." (PI. iii., fig. 16). 



EuGLEXA OxYUBis Schniarda. (PI. iii.. fig. 17). 



One of the largest species. It is a strap-shaped form, sometimes slightly 

 twisted round the long axis. The spirals and striae (the latter are coarser ami 

 more conspicuous than usual) run from right to left obliquely downwards, 

 focussing the upper surface. This is unusual, not to say unique, in the 

 genus. From two to four stout paramylon rods in a single serie-s; no flagellum; 

 a short stout spine behind. The chloi-oplasts are brick-shaped (ifj. long) follow- 

 ing tlie lines of the striae. Stigma very large, pale, and indistinctly outlined. 



Long. 250 — iOO. lat. '22—Ui,j.. Coogee (4) ; Botany (91). 



Cf. Daugeard, I.e., p. 100, fig. 20, who gives long. 490, lat. 30 — 'iO/j., also 

 Stein, T. xx., f. 4, 5 (not f. G, which is E. tripteris Duj.). 



A smaller forai may also be met with : — long. 156 — 250, lat. 20 — 22^. 



Var. HELicoinEA (Bernard) mihi. (PI. iii., fig. 18). 



So strongly twisted as to show three nearly ecuuil lobes, in other details 

 like the type. 



Svn. Phacus lielicoideus Bernard, Protococc. et Desm.. p. 206, PI. xvi., f. 

 563. 



Long. c. spin. 360 — 400. lat. 40 — (iO, spin. long. c. 40j(i. Guildford: Kvngle 

 (219); Lismore (237, 260,271). 



Var. GRACiLLiMA, u.var. (PI. iii., fig. 19). 



Forma gracilior, rainime torta. Long. c. spin. 253, lat. 17, sj^in. long. 

 ■\'2jx. Lismore. 



A very rare slender form. Hardly twisted at all and, curiously enough, in 

 reverse direction to the type, though the striae run the usual way. The paramylon 

 rods in this species are really flattened links, in which the central spgice has 

 become filled up by gradual thickening of the sides. Its position is still in- 

 dicated by a faint central line. 



EUGLEXA TRIPTERIS (Duj.) KlcllS. (PI. iv., fig. 1). 



In spite of its great likeness to Euglena ujcyuris v. helicoidea, this is a very 

 distinct form, very much smaller, more common, and one that retains its charac- 

 teristics remarkably well. It generally has a long flagellum. The only note I 

 have of the twist is that it is from left to right, the op])osite of E. o.ryuris. 

 Compare Dujardin, p. 338, PI. v., f. 7, whose figure the generally accepted form 

 does not very closely resemble; he gives long. 65 — SOyn; also Stein, T. xx., f. 6, 

 who considers it a young form of E. oxyuris. 



Syn. E. torta Stokes, I.e., p. 86, PL "i., f. 20. 



Long. 70—150, lat. 10— 15ju. Wyrallah; Lismore (237, 254, 258, 286, 293, 

 310). 



Edglexa spirogyra Ehr. (PL iv., fig. 2). 



Easily recognized by the characteristic granulate striae which, in this species, 

 are very much in evidence and, as a rule, run obli(]uely from left to right. 

 The typical form {cf. Stein, T. xx., f. 7) seems to be cylindrical, sliglitly attenu- 

 ate in front, but rapidly narrowing beliind into the short acute tail. Membrane 

 somewhat rufescent giving the specimens a yellow-green colour. 



