134' . AUSTRALIAN FRESHWATER FLAGELLATES, 



Trachelomoxas scabra var. cordata Playf. Foi-ma. (PI. vii., fig. 7). 



Forma magis ovata, interne magi.s angustata, meiubrana lere glabra. 



Long. 20. lat. 15/n. Lismore (351). 



A more ovate form than that described before and more narrowed below. 

 Membrane only very sliglitly rough with low scattered thickenings liere and 

 there (antea, lihs, p. 29, PI. iv., f. 11). 



Trachelomoxas acuminata var. amphora Playl. (PI. vii., tig. 8). 



Long. 38, lat. 23; coll. alt. 8, lat. (i; caud. long. 10^. Lismore (347). 

 Described originally from Parramatta, now contirmed from Lismore. The 

 zooid was alive and active, the chlorophyll seemed to be diffused. 



Trachelomonas URCEOL.WA stokes. (PI. vii., tig. 9). 



Long. 50—57, lat. 23—28; coll. alt. 4—6; caud. long. 10— 17/^. Lismore 

 (347, 348, 352). 



Merely a single specimen, not too like the type, was jireviously noted from 

 Parramatta (Sydney), but 1 have now to record typical specimens alive in 

 some (|uantity tVoni this district. In most of the tailed forms the zooid is free 

 within the lorica, but occasionally the body is adherent. Such are generally 

 found in planktim gatherings and I would remark that it is not necessary to 

 go for plankton to large bodies of water; the plankton of ponds is usually 

 extremely varied and interesting. 



Trachelomonas Girardiana mihi. 



Syn. 2V. urceolata var. (Urardiana Playf. (These Proceedings, 1915, p. 33, 

 PI. v., f. 7, 8). This foi-m is really not in the least like Tr. urceolata and always 

 retains its very characteristic appearance so that I think it should stand as a 

 type. 



Var. GLABRA, n.var. (PI. vii., fig. 10). 



Long. 36 — 40, lat. 20—22; c<ill. alt. 4— ti, lat. (I; .and. long. 5—10^. Lismore 

 (347). 



Membrane smooth in these specimens, not scabrous as formerly. At present 

 Known only from Lismore. 



Trachelomonas elegantissima (G. S. West) Flayl'. 



Arranged, but doubtfully, by G. S. West as (?) U'nuihriioii eleijanlissimum 

 in Algae of the Yan Yean Kescrvoir, p. 81, fig. 10k ; 1 placed this species 

 under Trachelomonas on account of tlie resemblance of a similar form to Tr. 

 uapiformis. The zooid, however, which alone can decide the genus, has not 

 yet been noted ; and indeed it is not at all unlikely that it may turn out to be 

 a species of Salpingoeca {aiitea, 1915, p. 32, f. 12). 



Tracheix)monas hespbria, n.sp. (PI. vii., fig. 11). 



Forma ad Tr. eletjaiUis.iimain var. ovatam valde accendens, sed stipite brevis- 

 sima; corpore ovato, .suhgloboso, utrinrjue rotundato, interne ■acuminato, in stipi- 

 tem brevissimam producto, superne collo rectangulari, ore evereo. 



Long. Corp. 14, lat. 8; coll. alt. 4, lat. 4; stip. long. 'l/x. Perth Water Supply, 

 W. Australia. 



