BY G. I. PLAYFAIR. 121 



E. aoit-, and is the form commonly found in our waters. I include in it speci- 

 mens over lOOyix long, and up to Sfi. in diameter. 



Long. 110—150, lat. 7— Six. Guildford (45. 146); Lismore (237, 241, 258, 

 259, 260, 295). 



Var. PARVA, n.var. (PI. iv., figs. 7, 8). 



Forma brevior. Long. 54 — 94, lat. — 8, long. eaud. 4 — 16/^. Lismore 

 (237, 258). 



A short form, less than lOOju, long, sometimes blunt ended behind. 



Var. HYALixA, n.var. 



Forma liyalina, chloropla-stidibus nullis, nee stigiuate. 



Long. 150 — 200, lat. 8 — 10^. Rookwood ; Guildford ; Wyrallah ; Lismore. 



Euglena a^m has also a var. hyalina Klebs.. 



EuGLEXA pisciPOBMi.s Klcbs. (PI. iv.. figs. 9 — 11). 



A small form, but one of the most active and frequently met witli. In 

 shape it varies somewhat, but generally it is shortly fusiform, with the like- 

 ness to a fish from which it derives its name, subrostrate in front and acutely 

 pointed behind, without a tail. No amylaceous rods or granules. The specimen 

 shown in PI. iv., f. 11 is more globose in the centre than usual. It has probably 

 just developed out of the globular vegetative cell, the shape of which it still 

 partly retains. The long flagellum enables this form to swim very rapidly. 

 Compare Klebs. Flagellatenstudien, p. 302; Daugeard, I.e.. p. 89. f. 16a; the 

 latter gives dimensions long. 30. lat. — 7fi. It is doulitful. however, if his 

 figure represents the type. 



Long. 30—32; hit. 8—12^. Ciisino (223); Lismore (221, 237, 258. 260, 

 263, 295, 327. 344, 348). 



EuGLEXA TEXTA (Du.jardin) Senn. (PI. iv., fig. 12). 



Syn. CriiDionihi te.ita Du.jardin, p. 339. PI. v.. f. 8; Euglena riridi.'', pro 

 parte, Stein, T. xx., f. 26 — 33; Tracliehiminian tarto Kellicott, iu Stokes, In- 

 fusoria of U.S., p. 87, PL i., f. 24. 



The type is oval, somewhat attenuate in front. This species seems to me 

 to be merely the vegetative cell which has increased in size and become motile 

 with hardly any alteration in shape. It has nothing ta do with Lepocinclis 

 ovum; and T raehelomonas torta Kellicott is simply the empty membrane, with 

 the striae of both upper and lower face put in at the same time. This is a 

 plankton form, generally to be found among weeds in deep water. The chloro- 

 plasts are disc-shaped, irregularly circular or polygonal, and close together; 

 they are much more distinct than in any other species. Membrane smooth and 

 covered with the usual fine spiral striae, with difficulty visible except on the 

 empty cell. Cytoplasm granular; a large stigma and long flagellum, movement 

 active. Dujardin gives long. 50^. 



Long. 50, lat. 40^. Lismore (352). 



Var. OVATA, n.var. (PI. iv., fig. 13). 



Forma ovata, front* attenuata, pone rotundata; ceteris ut in forma typiea. 

 Long. 38—50. lat. 25— 32;x. Duck Creek, Clvde; Lismore (261, 337, 347^ 

 348). X' 



The most common form here; distinctlv ovate, not oval. /'^'j 



f^ -J - 



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