342 A MONOGRAPH OP THE AUSTRALIAN SPONGES. 



1. SUB-FAMILY CHALARCHIN^. 

 Chalarchidse wihout Flesh-spicules. 



2. SUB-FAMILY CHALARCHIS^. 

 Chalarchidse with Flesh-spicules. 



2. FAMILY CHALCCENID^E. 



Monacticera, with a dense mass of biacerate spicules in the 

 axis of the anastomosing horny fibres. 



1. SUB-FAMILY CHALCCENIN^E. 

 ChalccenidEe, without Flesh-spicules. 



2. SUB-FAMILY CHALCISSIKLE. 

 Chalccenidse, with Flesh-spicules. 



3. FAMILY CLATHRIDyE. 



Monacticeras, with predominating truncated spicules in the axes 

 of the anastomosing horny fibres. 



1. SUB-FAMILY CLATHRIN^E, 



Clathridee, without Flesh-spicules, and without foreign bodies in 

 any of the fibres. 



2. SUB-FAMILY CLATHRISSIN^E. 



Clathridee, with Flesh-spicules and without any foreign bodies in 

 any fibres. 



3. SUB-FAMILY CLATHRILLIN^. 



Clathridce, with foreign bodies in the connecting horny fibres, 

 and without Flesh-spicules. 



