588 DR. R. VON LENDENFELD ON THE SYSTEMATIC [Dec. 21, 
Schulze; Coscinoderma, Carter; Spongodendron, Lendenfeld; and 
many of the species of the genus Spongia, auctorum. 
4. Subfamilia Spongissine, Lendenfeld. 
With flesh-spicules. 
Spongissa, Lendenfeld, MS. 
2. Familia ApLystnip&, Lendenfeld. 
The skeleton is composed of spongin-tubes, the walls of which are 
thinner than the diameter of the lumen, which is filled with pith. 
1. Subfamilia Aplysinine. 
Without flesh-spicules. 
Luffaria, Duchassaing and Michelotti; Aplysina, Nardo; Luffa- 
rella, Lendenfeld, MS.; Dendrospongia, Hyatt. 
2. Subfamilia Aplysissine, Lendenfeld. 
With flesh-spicules. 
Aplysissa, Lendenfeld, MS. 
3. Familia Hircinrp#, Lendenfeld. 
With narrow axial canal in the fibres, and filaments in the ground- 
substance. 
1. Subfamilia Hircinine, Lendenfeld. 
Without proper spicules. 
Hircinia, Nardo ; Hircinopsis, Nodosina, Aphrotriche, and Sty- 
phlos, Lendenfeld, MS.; Stematonemia, Bowerbank ; Filifera, Lie- 
berkiihn ; Sarcatragus, Schmidt ; and Polytherses, Duchassaing and 
Michelotti. 
2. Subfamilia Hircinissing, Lendenfeld. 
With proper spicules. 
1. Group Chalinocinia, nov. 
With proper spicules in the conuecting fibres. 
Chalinocinia, Lendenfeld. 
2. Group Hircinissa, nov. 
Without proper spicules in the fibres ; with flesh-spicules. 
Hircinissa, Lendenfeld, MS. 
ii. Tribus Macrocamere, Lendenfeld. 
With large sac-shaped ciliated chambers, and soft, transparent 
ground-substance. 
4. Familia SponceLip, Lendenfeld. 
The horny fibres contain slender axial thread and form a 
reticulated skeleton. 
