22 THE GENUS TRACHEL03I0NAS, 



tralica and var. granulata. It is found here sometimes with 

 short, blunt, bacillar spines as in the former, or coarsely granu- 

 late as in the latter. Even in Stein's figure the spines are notice- 

 ably blunter and more bacillar in shape than those of the typical 

 form. Stein's figure works out at 38 x 16, Schroder's at 48 x 21, 

 without spines. The spines in all these forms, as far as my 

 observations go, are never over 2 /x long. 



Trachelomonas bacillifera, n.sp. (PI. iii., f.l3). 



Lorica subglobosa, spinis obtusis bacillaribus dense obtecta; 

 collo nullo; colore plerumque obscuro. 



Long. 35-40, lat. 32-38, sine spinis; sp. long, ad 2 /x. 



Auburn 68; Guildford 114; Botanic Gardens 150; Centennial 

 Park 133. 



The spines in all forms of this species are of the same character 

 as those in 7V. hispida var. australica, supra. The type-form is 

 almost spherical, and almost always very dark in colour, gener- 

 ally dark red or dark reddish-orange. 



Var. ovALis, n.var. (PI. iii., f.l4). 

 Lorica late ovalis, spinis ut in forma typica. 

 Long. 38-42, lat. 32-34, sine spinis; sp. long, ad 2 /x. 

 Auburn 68; Guildford 114; Canley Vale 110; Lismore 254. 



Yar. MINIMA, n.var. (PI. iii., f.l5, 16). 



Lorica subglobosa, oblonga vel ovalis, sed minor; spinis ut in 

 forma typica. 



Long. 22-28, lat. 18-26, sine spinis; sp. long, ad 2 /x. 



Auburn 148; Coogee 4; Botany 151, 152; Lismore 237, 238, 

 242, 245. 



Trachelomonas Sydnbyensis, n.sp. (PI. iv., f.l5, 16). 



Lorica elliptica, lateribus interdum quam levissime deplanatis, 

 polls rotundatis; collo humillimo crenato vel spicato semper in- 

 structa; spinis acutis brevibus, vel denticulis (regione equatoriali 

 plerumque denticulis) sparse ornata ; colore vulgo carnoso vel 

 dilute flavescente. 



