142 



AlbTKALIAK FRESHWATER iL,AUELLATE8, 



Genus A n i s o x e m a Dujardiii. 

 AxisoNEMA ACi-vrs Duj. (Fl. ix.. fig. 18). 



Syn. Atiisoiiema ovalwm Ma^kell, Trans. N.Z. Inst., N.i?., vol. "JO, 1887, T. 

 i., t'. 8; Ma.skell givf.s long' 20^. (Jur speeimens agree entirely with Dujardin's 

 figure and description (op. cit.. p. 345, Pi. iv., f. 27; not PI. v. as in the test). 

 Senn's figure {I'lagellata, p. 183, f. 134a) is quite different, being elliptical and 

 attenuate slightly to each end. Dujardin's dimensions, long. 20 to 31fi, just cover 

 Mankell's and nurs. The trailer is very long, quite three times the length of 

 the l)ody soijietimes. 



Long. 30. lat. 18yu. Kookwoud; Lisinore (2(j0). 



AXISONEMA HEXAGONUM, n.Sp. (PI. ix.. fig. 19). 



Cellulue inae(iualiter bexagonae; in medio suliqiiadratae; sursum et inferne 

 triangulari-conicae; utro(|ue ])olo acutae; laterihus rwtis; uno latere transverse 

 striata. 



Long. c. 30. lat. IS/x- Duck Creek, Clyde; Guildford. 



Irregularly hexagonal, central part subquadrate; above and l)elow triangru- 

 lar-conical, ends pointed, sides straight, transversely striate, apparently on one 

 side only; tiagellum and long trailer observed. 



Var. Ei.EOAXS, n.var. (PI. ix.. fig. 20). 



Quam forma typica longior et angustior. 

 Long. c. 40, lat. 10^. Duck Creek, Clyde; Guildford. 



The same general shape :i* the type, but longer and mure slender. Both 

 very rare, sizes only estimated. 



AxisoxEiiA (ii!AXDK (Ehr.) Stein. (Fl. ix., fig. 21). 



Long. c. 38, lat. 21, cra.ss. c. 10^;^. Lismure (328). 



Syn. Bo(l(j yrandis Ehr.; cf. Stein, T. xxiv., f. (i — 11, but liis figures are 

 not convincing and look too much like xlnisonema acinus Duj. which he gives 

 as a synonym. That is, however, a much smaller species, only about half the 

 size of this. Kent's figures are copies of Stein's, exce))! f. 30 (after F.utschli). 

 The latter seems to represent our form. The subapical groove, in wliich t\w 

 trailer is inserted, is not cons|)icuoiis as in -1. uciytuf. The hinder pai-t of tlie 

 body often contains coloured ma-sses of ingested food-stuffs and even whole 

 organisms such as Tmclielomonas. There is the usual stout straight flagellum and 

 very long thick trailer, often three times the length of the body. The latter is 

 compressed in side view. 



Genus E x T O s I p II o X Stein. 



EXTOSIPHON SULCATU.\t (Duj.) Stciii. (Fl. ix., fig. 22). 



Rare. 



Long. 22, lat. 14^. Lismore. 

 Syn. .l)'/.-v)HC7Ma sulcata Duj.. i> 

 lat. 7 — 15^. 



345. Fl. u.. f. 28. Senn gives long. 15—25, 



