50 
to add, pag. 23, at the description of Synops pyröformäs : 
The following points seem to me characteristic for Synops: Incurrent chones 
without walls, dispersed over the whole surface. Walls of the excurrent chones 
more or less developed; excurrent chones congregated on the depressed top of 
the Sponge. Main excurrent canals in direct communication with the chones, 
which are however provided with sphincters. 
Pag. 24, line 22, 
„ 
” 
24, 
24, 
24, 
25, 
25, 
25, 
25, 
25, 
26, 
27, 
29, 
30, 
30, 
30, 
30, 
30, 
30, 
30, 
30, 
31, 
al, 
310 
32, 
29, 
30, 
34, 
10, 
12, 
18, 
for thus, 
great, 
yet, 
yet, 
sideward , 
rather, , 
surrounded , 
io, 
closed, 
as, 
R., 
on, 
yet, 
caused the, 
Merejskowski , 
no person shall, 
pitty , 
reign , 
forced, 
read iherefore. 
2) 
” 
„[Pl. IV, figg. 133-136 ‚, 
„ 
” 
„ 
that remains , 
Suberitus , 
fig. 26, 
figg. 22 and 23, 
high. 
still. 
still. 
lateral. 
rather. 
surrounding. 
in. 
close. 
than. 
2 
during. 
sul. 
caused by the. 
Merejkowski. 
nobody is able. 
pity. 
remain. 
obliged. 
[Pl. I11, figg. 96-98; pl. IV, 
figg. 133—136, 
ramains. 
‚Subertites. 
fig. 25. 
figg. 21 and. 22. 
