12 THE GENUS TRACHELOMONAS, 



Var. AUSTRALICA, n.var. (PI. i., f. 17-21). 



Lorica globosa vel plus minus ve quad rata, angulis rotundatis; 

 collo lato humillimo semper instructa; membrana levi. 



Long. 11-22, lat. 10-20; coll. alt. 1, lat. 3-6 /x. 



Auburn 120, 139, 140, 163; Botany 142, 145, 152; Canley Vale 

 110; Guildford 114; Lismore 236, 237, 238, 241, 245. 



The very broad ring-shaped neck is characteristic of this form, 

 which ranges in shape from globose to quadrate or oblong, and 

 varies considerably in size. 



Yar. ATTENUATA, n.var. (PI. i., f.22, 23). 



Lorica levis, fronte quadrata angulis rotundatis, postice leviter 

 attenuata et late-rotundata; vulgo collo brevi. 



Long. 11-20, lat. max. 8-13 /x. 



Coogee 4; Guildford 60; Centennial Park 133; Botany 142, 151; 

 Lismore 236, 242. ^ 



Var. SCABRA, n.var. (PI. i., f.24). 

 Lorica ubique scabra granulis humillimis obscuris sparse dis- 

 positis. 



Long. 24, lat. 19; coll. alt. 2, lat. 6 /x. 

 Auburn 120. 



Trachelomonas pusilla, n.sp. (PI. i, f.25). 



Lorica minuta, levis, modice cordiformis, fronte levissime de- 

 planata, postice paullulo acuminata; collo nullo; ore lato. 



Long. 10-16, lat. 9-16 /x. 



Canley Vale 110; Guildford 114; Botany 142, 151, 152; Lis- 

 more 242, 245. 



Var. ROTUNDA, n.var. (PI. i., f.26). 

 Lorica levis ubique rotundata, nee acuminata, globosa, fronte 

 levissime deplanata; ore lato. 

 Long. 11-12, lat. 10/x. 

 Auburn 163; Botany 151; Guildford 114; Lismore 238, 242. 



Var. PUNCTATA, n.var. (PL i., f.27). 

 Long. 15, lat. li fx. Botany 145. 



