355 



Ihey have here a similar position as on the specimen figured l)y Husk. On 

 a colony taken from Manicina an-olata (without locality) the aviculai-ia have a 

 similar form but are directed obliquely proximally and inwards. 



The colonies form crusts on corals, on Tridacna sp. and on a sponge. 



St. Thomas, Singapore (Schytt, S. Gad). 



2;i* 



