268 C. M. Maplestone. 



TLis is a very elegant form, its great peculiarity is the de- 

 pressed area on the distal part, perforated with two rows of 

 pores. This part was probably covered with an epitheca when 

 living. The sinus in the distal margin of the ooecial opening 

 is peculiar to this species. 



Catenicella minutissima, n. sq. (PI. XXXVTT., Fig. 7). 



Ooecium pyriform, with a slightly depressed falciform granu- 

 lar area on each side. Nine very narrow fenestrae below the 

 ooecial opening. Ooecial opening very wide ; proximal margin 

 extended upwards in the median part causing the opening to 

 be narrow and curved downwards at the ends : an irregularly 

 shaped lateral process on each side. Zooecia unknoAvn. 



Locality. — Campbell's Point (J. F. Mulder). 



This is an extremely small ooecium, ; I know of no species of 

 Cateniodla that has zooecia so minute as would correspond 

 with the dimensions of this ooecium. The lateral processes 

 shown are probably part of the matrix of the formation and not 

 really a part of the ooecium. 



Catenicella longispinosa, n sp. (Pi. XXXVIL, Fig. 8). 



Zooecium oval, ventricose ; with wide lateral processes and 

 seven large fenestrae. Thyi'ostome arched and raised above, 

 with a very small sinus in the proximal margin. Two deep 

 depressed uncalcified areas on each side. A long acute bilamin- 

 ate spine on the distal angles. 



Locality. — CampbeU's Point. (J. F. Mulder). 



This is a large species and is distinguished by the very long 

 distal bilaminate spines which clearly show the manner of their 

 formation as the sides do not completely join, but leave, in the 

 left-hand one, a long narrow cavity and in the other a triangular 

 hollow : the spine on the extreme right hand has not developed 

 completely and may possibly indicate the presence of an avicu- 

 larium in lieu of an elongated spine. 



Strophipora triangularis, n. sp. 



(PI. XXXVIIL, Figs. 9 and 9a). 



Ooecium ovoid, with two rounded ridges descending from 

 near the summit downwards and outwards, terminating; on a 



