SPONGES 4] 
Cup Sponge. ‘This grows in deep water, twenty feet or more below the sur- 
face. When growing this sponge is disk shaped, but gradually assumes a cup 
form. I have seen specimens eighteen inches high by a foot or more in diame- 
ter. The skeleton is coarse, with quite regular meshes. See Fig. 10, page 
19, where I have given a life-sized cut of a portion of the skeleton of this spec- 
ies. Also see Fig, 21, where is given acut of a Giant Cup Sponge much 
reduced. The color of this sponge in life is deep greenish. 
Another form among the Horny Sponges, is the rather unique Cord 
Sponge, belonging to the genus Funicula. Here we find the sponge drawn 
out into long anastomosing branches. ‘The fiber of this species is fine and the 
_skeleton is not covered with much sarcode. In general appearance, the Cord 
Sponge reminds one of sections of the Branching Sponge ( See Fig. 22, where 
the two sponges are contrasted ) of our northern coast, but the Cord Sponge 
does not produce clustering branches as does the Branching Sponge. 
In color the Cord Sponge is a beautiful purple lake. Another peculiarity 
about it is, that it is parasitical in habit, almost always growing upon other 
sponges. Other Horny Sponges will occasionally grow upon other sponges, 
but I have never seen any other species which were so habitually parasitical as 
this one. 
ODOR OF HORNY SPONGES. 
Most sponges have an exceedingly disagreeable odor when first removed 
from the water which they retain to some extent when dried with the flesh on. 
This odor appears to vary with different genera, insomuch so, that it is quite 
possible to distinguish to what genus any particular sponge belongs by the 
odor alone. 
I have already alluded to the peculiarly strong odor of the members of the 
genus Hireinea or Goat Sponges. ‘This is so intense in the case of the Logger- 
