BY G. 



PLAYFAIR. 17 



clielomonas that swims backwards, with the orifice and flagellum 

 behind. 



Yar. MAJOR, n.var. (PL ii., f.7). 



Lorica major, formse typicse similis, postice levissinie retusa, 

 mammillata; collo quadrato recto valido, plerumque annulo basali 

 instructo. 



Long. 34-41, lat. 15-18; coll. alt. 4-5, lat. i fx. 



Botany 145; Lismore 263, 238, 241. 



This larger form is rare round Sydney, but frequent in the 

 neighbourhood of Lismore. 



Trachelomonas conica, n.sp. (PI. ii., f.8, 9). 



Lorica conica levis; parte anteriore subrectangulari, lateribus 

 parallelis, angulis late-rotundatis; parte posteriore conica, lateri- 

 bus levissime arcuatis, a tergo obtuse-rotundatis; collo nullo aut 

 humillimo. 



Long. 24-26, lat. 12-14; lat. oris 2-4; coll. alt. 1 /x. 



Auburn 56; Botanic Gardens 3, 158; Guildford 146; Lismore 

 225, 238. 



Always very uncommon in gatherings, though widely dis- 

 tributed; generally without a neck. 



Var. GRANULATA, n.var. (PI. ii., f.lO). 



Paullo major, minute granulata. Long, 36, lat. 12 /x. 



Auburn 56. Cum forma typica. 



Var. RiCHMONDiiE, n.var. (PI. ii., f.ll). 



Lorica subelliptica angusta ; polo anteriore late-rotundata, 

 posteriore conica acuminata; spinis obtusis brevissimis (paene 

 granulis) ubique ornata; collo nullo. 



Long. 34, lat. 14; lat. oris 4 /x. 



Lismore 225. A river-form. 



Var. OVATA, n.var. (PL ii., f. 12). 



Lorica anguste-ovata, lateribus arcuatis; fronte late-rotundata, 

 a tergo acuminata; ubique spinis brevissimis sparse ornata; collo 

 humillimo. 



Long. 37, lat. 18; coll. alt. 1, lat. 6; spin. long, ad IJ/x. 



Lismore 236. 



