BY G. 1. fLAYFAlR. 



35^ 



Trochisia hirta (Reinsch). 

 Cell. diam. s.sp. 27-34; sp.long. 4-6//-. Lismore (225, 236). 

 Syn., Acanthococcus acicidi/erus Lag. ; A. hi7'tus Reinsch, 

 Genus Acanthococcus^ p. 240, T. xi., f.l, 5, 15. Reinsch gives 

 diam. 15-32 /a, cf. Biol. Richm. R., PI. vii., f.2, and the dimen- 

 sions on p. 136. 



Var. ELLIPTICA Playf. 

 Cell. long. s.sp. 74-80, lat. s.sp. 38-62; sp.long. 5-12//. 

 Lismore (236, 244). Biol. Richm. R., p.l36, PI, vii. 



Trochisia hystrix (Reinsch). 

 Cell. diam. s.sp. 133; sp. long. 16 /x. 

 Lismore (236). 



Reinsch, /.c, p.241, T. xii., f.25. It 

 ought, by rights, I think, to be set pj , 4 



down as a variation of Tr. hirta. Trochisia hi/slrix; segment 

 Noted in the same sample with that of margin ;( x 665). 



Diam. cell. 43-46 //. Long. si)in. 4-7//. 



f.l. 



^lilUyiiiii^;^/ 



species and var ellipfica. 

 Reinsch. 



Fig.o. 

 Trochiiiia pachy- 

 derma; ( x 1000). 



Trochisia pachydermia (Reinsch) 

 Cell. diam. s. membr. 18, rugis membr. 2// alt. 

 Lismore 

 Reinsch, I.e., p. 240, T. xi., f.8, 9, gives diam. 



12-19 /x. A good number of his other species 



would seem to be only forms of T. i^cLchy derma. 



Eight cells found together, apparently, in a 



rotifer-skin 



Trochisia Lismorensis, n,sp. 



Cellula; sphsericte setis brevibus bifidis dense 

 vestitae. Cytoplasma hyalinum. 



Cell. diam. s. setis 26; set. long^ 4 //. 



Lismore (225). 



Two species somewhat like this are Tr. 

 hrachiolata (Mob.) Lemm., Nord. Plankt., 



FlagelL, tfcc, p.l6, fig.58, and Tr. (Acanth.) Trochisia" Lismoren- 

 spinosa (Reinsch), I.e., p. 241, T. xi., f.6. The sis, n.sp. ;( x 665). 

 former is a marine species, and, in both, the spines, though bifid, 



Fig. 6. 



