BY G. I. PLAYFAIR. 197 



Long. 74; lat. 57/u. 

 Botany. 



Forma octasticha Nord., I.e. 

 Long. 56; lat. iSfx. 

 Coogee. 



Cos. PSEUDOPACHYDERMUM Nord., Alg. N. Z. p.53, T,5, f,20. 

 (T.v. f.21). 



Long. 110-116; lat. 72;x. 

 Murray's Lagoon, Collector. 



Formae immaturae. (T.v. f,22). 



(=^Cos. ad ohsoletiim accedens, Nord., I.e. i.'221). 



Long 75, 78, 80, 84, 90, 90, 90, 102; lat. 66, ^^^, ^^, 72, 62, 66 

 Qd>, 72/M. 



Nuclei amylacei bini. 



Collector; Auburn. 



None of the immature forms observed showed any signs of 

 teeth at the basal angles. On the other hand most, if not all, 

 had a strongly incrassate yellow membrane with the characteristic 

 incrassate ])apilla within the apex. One at least was noticed 

 with the angular outline on the back, familiar in G. ohsoletiim 

 and C. perforatum. The end view of these forms, however, is 

 not a sharp-pointed ellipse, but oblong with broadly rounded 

 ends. I think it highly probable that the two doubtful forms of 

 Cos. pyramidatiom, in Borge, Desm. Braz. p. 94, T.3, f.8-9 , are 

 really Cos. pseudopachydermum and one of the above immature 

 forms. 



Cos. VENUSTUM Breb. /3 induratam Nord., Alg.N Z. p.57, T.3, f.l3. 



(T.v. f.24). 

 Long. 30, 31,32, 33; lat. 21, 19,22,21; crass. 11, — , — , 11^. 

 Collector. 



Forma incognita: forma immatura No.l. (T.v. f.25). 

 Long. 18; lat. V^^x. Nuclei amylacei singiili. 

 Collector. 



