BY G. I. PLAYFAIK. 171 



project at the widest part. Besides, Eu. cavi^yannlatum always 

 shows five tumours, with careful observation. Cf. also Fii. obesnm 

 Josh.,"*^ which has no central inflations or scrohicula. 



Eu. TRIANGULUM, n.sp. (T.iii. f.7). 



Eu. magnum, diametro subduplo longius, profunde constrictum, 

 sinu lineari. Semicellulae obscure trilobatae, tiiaiigulares; 

 angulis inferioribus obtusis; lateribus rectis in lobum polarem 

 rapidissime converuentibus; lobo polari producto, angusto, apice 

 vix dilatato; angulis superioribus obtuse-rotundatis, apice trun- 

 cate, incisura lineari extremo ampliato et binis verrucis instructa. 

 Semicellulae tumoribus 3 basalibus, 2 medianis, inter lios scrobi- 

 culis singulis majoribus et (paullo infra) minoribus binis; a latere 

 visae anguste-ovatae, basi late rotundato, apice conico. Mem- 

 bra na achroa subtiliter punctata. 



Long. 120, 126, 128, 132; lat. Q^, 72, 66, 77/x. 



Hose's Lagoon, Collector. 



The two outer basal tumours have a mammillate appearance, 

 and generally they alone are visible in front view. The form 

 nearest to this is Eu. lati])es Nord.,t the details of which, how- 

 ever, are quite different. 



Eu. DIDELTOIDES (Rac.) 



Efi. quadriceps Nord., \'rv dideUoides Rac, Desm. Ciastoni, p. 19, 

 T.2, f.31. 



Nuclei amylacei 6 in quaque semicellula. 



Long. 153, 160, 160, 170, 172, 176, 176; lat. 75, 75, 78, 80, 82, 

 80, 86; crass. 48, — , 52, — , — , — , 54; lat. lob. pol. — , 32, 27, — , 

 3(.), — , 30^. 



Botany, Centennial Park. 



Raciborski (I.e.) gives long. 170, lat. 82, lat. isth. 25, lat. lob. 

 pol. 28/M. Cf. Eu. quadriceps Nord.| It seems to me that this 



* Burmese Desm. T.33, f.l9. 

 t Desm. Cent. Braz. T.2, f.9. 

 t Desm. Cent. Braz. T.2, f.o. 



