114 CEYLON PEAEL OYSTER REPORT. 



Family: MYEIOZOIDiE, Smitt. 

 Schizoporella spongitis (Pallas). 

 Localities : Gulf of Manaar ; and off Mount Lavinia. 



Schizoporella ampla, Kirkpatrick (20). 

 Localities : Gulf of Manaar ; and Navakaddu Paar. 



Schizoporella argentea, Hincks (6). 



In the single small colony of this species the sinus is wider than Hincks descrihes 

 and there are no oval avicularia, but in their place the elongated kind as in some of 

 his specimens. There are the two spines above and the granular, silvery surface of 

 the zooecia with foramina between the granulations. 



Locality : Gulf of Manaar. 



Schizoporella aperta, Hincks (6). 



There are two spines on the upper margin of some of the orifices of these specimens 

 not described before. No ocecia are present, but in other points the characters agree 

 with those of the species. 



Localities : Gulf of Manaar ; and Navakaddu Paar. 



Schizoporella cecilia (Atjd.). 



The one small colony of this sjaecies has raised, irregular-shaped ridges of calcareous 

 matter on the ocecium, and a decided arch above the orifice at the base of the ocecium, 

 also a screen-like process on the front of the zooecium. 



Locality : Gulf of Manaar. 



Schizoporella unicornis, Johnston. 



The present specimen has the peculiar long avicularia of the form longirostris, 

 Hincks (11), but not the more important feature of that variety, namely the loop- 

 shaped sinus. 



Locality : Navakaddu Paar. 



Schizoporella nivea, Busk (1). 



There are numerous colonies of this species, loosely attached, being, as it were, 

 folded round the stems of the large zoophyte, Campanularia juncea, and having the 

 opposed edges of the zoarium adhering to one another. (See Part II., p. 115, fig. 2.) 



Locality : Gulf of Manaar. 



Schizoporella circinata, MacGillivray (23). 



The zocecia of these specimens have the ridge-like mucro of Hincks's (10) species, 

 but not the avicularium. There is a single row of large punctures at the edge of the 

 zooecium. No ocecia are present on the two small colonies in the Ceylon collection. 



Localities : Off Mount Lavinia : and off Galle. 



