318 G. ©. J. VOSMAER, 
Axinella Phakellia 
Skeleton at large. Axial and extra-axial part| Axial and extra-axial 
clearly distinguishable. part clearly distinguish- 
Axial part. 
Funieuli. 
Meshes between funieuli. 
Funis. 
Meshes of axis. 
Extra-axial part. 
Spieules. 
From the basis of the 
sponge the main stem runs 
on as a single axis, or it 
may divide into branches; 
each branch of the axis re- 
presents a funis. 
Composed of a network 
of funieuli; which only occa- 
sionally form more than one 
funis. 
Each funiculus composed 
of spongin in which a few 
(2—20) spieules are wholy 
imbedded. 
About"80—-350 « in trans- 
verse diameter. 
Formed by innumerable 
funieuli. 
Formed by anastomosing 
funieuli. Not or hardly 
visible to the naked eye. 
Composed of funieuli gra- 
dually diverging from the 
axis; then running perpen- 
dieularly towards the sur- 
face, where they terminate 
into indistinct brushes. Funi- 
euli not unfrequently bran- 
ching and united inter se, 
thus forming a conspicuous, 
more or less rectangular 
network. 
Styli, strongyli and oxea. 
able. 
The basal stem soon di- 
vides into branches, each 
branch representing a funis. 
Neighboring funes anasto- 
mose and form a network. 
Composed of a network 
of numerous funes, each 
consisting of a network of 
funieuli. 
Each funiculus composed 
of spongin in which a few 
(2-—8) spicules are wholy 
imbedded. 
About 20—200 u in 
transverse diameter. 
Formed by comparatively 
few funieuli. 
Formed by anastomosing 
funes. Easily visible to 
thenaked eye(200—1000 a). 
Funieuli rather abruptly 
starting from the axis at 
about right angles and 
running in the same di- 
rection towards the sur- 
face. They scantily branch 
and are hardly united 
together by spicules. They 
terminate into distinet 
brushes. 
Styli, strongyli and oxea. 
