16 THE GRNUS TRACHELOMONAS, 



Lismore 236, 237, 242, 245. 



Syn., Lagenella euchlora Ehr., Trachelomonas lagenella Stein, 

 Chonemonas Schrankii var. glabra Perty. 'J'he name lagenella 

 is not admissible, having been used in a generic sense both by 

 Ehrenberg and by Schmarda. Our forms are more rounded, less 

 rectangular, than Stein's type,(Naturg. 

 d. FlagelL, H.i., T. xxii., f. 14-1 6) which 

 works out at 30 x 17 /x over all. The 

 characteristic curved neck is still pre- 

 sent, however. This form is rather 



local, apparently, as I have not ob- 



1 ., . £ J.1, • u Fig. 4. — Tr. euchlora (Ehr. 



served it m any of the many rich ° „^^ , ^, . 



•; 1 1 r. CI 1 Lemm., X 650, after Stein, 



gatherings from the suburbs of Sydney, 



but it is found sparsely distributed round Lismore, and is even 

 frequent in Nos. 236 and 245. Tr. similis Stokes, Proc. Am. 

 Phil. Soc, ] 890, p.76, f.l 2, should be arranged here as Tr. euchlora 

 var. similis (Stokes) mihi. 



Var. MINOR, n.var. (PI. ii., f.4, 5). 



Loricalevis, late-oblonga psene quadrata, angulislate-rotundatis; 

 a tergo interdum rotundata levissime attenuata ; collo recto 

 quadrato valido, ad basin annulo incrassato ornato. 



Long. 18-23, lat. 15-18; coll. alt. 2-4, lat. 2-4 /x. 



Botany 142, 151, 152; Canley Yale 1 10; Lismore, 225, 238, 241, 

 242, 245. 



Trachelomonas ampullula, n.sp. (PI. ii., f.6). 



Lorica levis, subhexagona, medio lateribus psene parallelis, 

 extremis conica; collo quadrato recto, plerumque sine annulo 

 basali, instructa. 



Long. 24-30, lat. 10-16; coll. alt. 2-4, lat. 3 /x. 



Canley Vale 110; Guildford 114; Botany 142; Parramatta 165, 

 166; Lismore 236, 237, 238. 



A very distinct species with little or no variation in form or 

 markings; some specimens are a little more markedly hexagonal 

 than others, the sides more angular. The posterior end also is 

 occasionally somewhat mammillate. It is the only form of Tra- 



