CLASSIFICATION. 
Spong. 7 
Subfam. 3. Caulophacince ( Caulophacus , g. n., Trachycaulus, 
g. n.). 
Fam. 3. Hyalonematidce. 
Subfam. 1. Hyalonematince [Hyalonema, Gray, Dictyosphcera, 
g. n., Pheronema , Leidy, Poliopogon , Wy.-Th.). 
Subfam. 2. Semperellince ( Semperella, G-ray). 
Fam. 4. Possellidce. 
- Subfam. 1. Rossellince ( Lcinuginella , 0. S., Polylophus , g. n., 
Rossella , Carter, Acanthascus, g. n., Bathy- 
dorus. g. n.). 
Subfam. 2. Crateromorptiin.ee, (Crateromorpiha, Gray, Rhabdo- 
calyptus , g. n.). 
Subfam. 3. Aulochonince ( AulocTionen , g. n.). 
Appendix. Uyalostylus, g. n., Aulocalyx , g. n. 
Order II. Dictyonina, Zittel. 
Suborder i. Uncinataria. 
Tribe 1. Clavularia. 
Fam. 1. Farreidce ( Farrea, Bow.). 
Tribe 2. Scopularia. 
Fam. 1. Furetidce ( Eurete, Semper, Periphragella, Marshall, 
Lefroyella , Wy.-Th.). 
Fam. 2. Melittonidce (ApTirocallistes, Gray, JPelittauIus, g. n.). 
Fam. 3. CJionelasmatidce ( Chonelasma , g. n.). 
Fam. 4. Yohulinidce (Volvulina } 0. S., Tretodictyum ) g. n., Field - 
ingia, S. Kent). 
Fam. 5. Sclerothamnidce ( Sclerothamnus , Marshall). 
Suborder II. Inermia. 
Fam. 1. Myliusidce (Jlyliusia, Gray). 
Fam. 2. Dactylocalycidce (Dactylocalyx. Gray, Scleronleqma, 
0. S., ? Margaritella, 0. S.). 
Fam. 3. Furyplegmatidce ( Euryplegma , g. n., ? Joanella , 0. S.). 
Fam. 4. Aulocystidce ( Aulocystis, g. n., Cystispongia, Roemer). 
Lendenfeld (15, 19) classifies the Myxospongice as follows :— 
Order I. Myxin^e. The mesoderm consists of soft transparent jelly 
destitute of fibrils or spicules ; rarely supported by distant 
fibres ( Halisarca ). Flagellated chambers in a surface layer ; 
interior lacunose, and without chambers. 
Fam. 1. Oscarellidce^Tie-vr. With spherical flagellated chambers. ( Osca- 
rella lobularis.) - 
Fam. 2. Halisarcidoe, new. With sack-shaped elongated flagellated 
chambers. (Genera Halisarca , Johnst., and Bajalus, new). 
Order II. Gummixye. Mesoderm of characteristic structure, giving it 
an india-rubber-like consistency. With or without stellate 
spicules. 
Fam. 1. Chondrosiclce. 
Subfam. 1. Chonclrosince, without stellates (genus Chondrosia , 
Kardo). 
Subfam. 2. Chondrissince , with stellates (genus Chondrilla , 0. S.). 
1885. [vol. xxii.] e 4 
