' BY G. I. PLAYFAIR. 177 



Long. cell. 70-72; lat. cell. 36-38; lat. ap. 16-17; lat. coll. 16-17; 

 crass. 19^. 



Centennial Park. 



Forma immalura No.2. (T.iii, f.l4, right hand fig.). 



Forma longior quam No.l, fere tam lata quam forma typica, 

 magis ventricosa, tumoribus lateralibus incipientibus, lobo polari 

 aegre inflate, collo nondum producto, scrobiculis minoribus 

 carentibus. 



Long. 75-78; lat. 36-42; lat. ap. 17-19; lat. coll. 17-19; crass.22/z. 



Centennial Park, Botany. 



Eu. coMPACTUM Wolle, Desm.U.S.p.l07, T.27, f.28-29. (T.iv. f.3). 



Long. 31-36; lat. 24-25; crass. 15-1 6;x. 

 Collector. 



Eu. UNDULATUM, n.sp. (T.iv. f.2). 



Eu. parvum, oblongum, paullo longius quam latum, medio sinu 

 lineari constrictum. Semicellulae cuneatae, truncatae; lateribus 

 levissime convexis, 4-5 crenatis; angulis superioribus in cornua 

 brevia porrectis; apicibus truncatis incrassatis; incisura acuta 

 brevi cuiieata. Crenae sunt series granulorum 6-8 transversales, 

 granulis obscuris infra marginem 2-3. Semicellulae tumore unico 

 parvo obscuro vix visibile supra basin instructae. Membrana 

 laevis. 



Long 36-44; lat. 25-30; lat. ap. 14-18^. 



Collector. 



The granules in the marginal series are difficult to make out, 

 so also the basai tumour, which cannot be seen at all in front 

 view. The nearest form to this is Eu. denticulatihm Kirch. 

 /3 elongatum Nord., in Alg. N. Z. p.79, from which it differs in its 

 larger size, crenate sides, series of granules and basal tumour. 

 The most mature form observed was 44 x 30/1. Cf . also Eu. dentic. 

 /3 stictuni Borges., in C. Braz. T.3, f.l8, the sides of which are 

 biundulate only and the granulations scattered, and Eu. spec. 1 

 Eorge, in Sussw. Chlor. N. Russ. T.3, f.39, which is of similar 

 shape and same size. 

 14 



