BY G. I. PLAYFAIR. 



11 



Fig.l. — Tr. bulla stein, 

 X 650, after Stein. 



(Pl.i., f.H-16). 



Long. 26-28, lat. 22-24 /.. 

 Lismora 236, 237, 246. 



Tkachelomonas bulla var. australis, n.var. (Pl.i., f.l3). 



Lorica ovata, levis, quam forma 

 typica magis acuminata, collo recto nee 

 attenuate. 



Long. 28-29, lat. 16; coll. alt. 2-3, 

 lat. 3 /x. 



Lismore 236, 237. 



A very rare form of which I have 

 seen but few specimens. Cf. Track, 

 bulla Stein, Naturg. d. Flagellaten, 

 Halfte i., T. xxii., f. 42. His figure 

 works out at 50 x 21 /x. 



Trachelomonas oblonga Lemm. 



Long. 10-19, lat. 8-12; lat. oris 3 /x. 



Coogee 4; Guildford 60, 114; Auburn 68; Botany 51, 142; Cen- 

 tennial Park 133; Canley Vale 110; Lismore 225, 237, 238, 240, 

 242, 245. 



Cf. Lemmermann, Reise n. d. Pacific 

 (Abh. Nat. Yer. Bremen, Bd. xvi., 1899), 

 p. 344. No figure is given, but the like- 

 ness of our forms to var. truncata Lemm.» 

 (ibid., Bd. xviii., 1904, p.l65, T. xi., f.7, 1 

 8) is so marked, that I think there can 

 be no doubt about the identification. 

 Lemmermann's description runs : — Lorica oval (Jdnglich ru,nd)., 

 yellow-brown, surface smooth, 13-16/x long, 11-12/x broad. Mem- 

 brane 1 /x thick. This description would make the type oval, 

 yet the name ^^ oblonga''' has been chosen; both the published 

 figures of var. truncata, I.e., are distinctly oblong, not oval, and 

 the same expression {Idnylich imnd) is used of the variation as of 

 the type, nor is any difierence in outline noted. I take it, there- 

 fore, that '•'Idnglich rund^' here is equivalent to ^''oblonga ubique 

 rotundataJ' 



ig. 2. — Tr. oblonga var, 

 truncata Leinm. , x 1000, 

 after Lemniermanu. 



