36 INVERTEBRATE ANIMALS. 
be only at the mouth of the shell, as in A7/zlioda (fig. 6, 6), or 
whether it be over the whole surface, as in Dzscorbina (fig. 6, ¢), 
it has the power of giving off pseudopodia. The pseudopodia, 
however, differ greatly from those of the Ame@éa, and they show 
some remarkable characters. They are extremely long thread- 
like processes, instead of being blunt and finger-shaped (fig. 5, 
6), and they have the curious property that they run into one 
another and interlace towards their extremities, so as to form 
a network which has been aptly compared to an “animated 
spider’s web.” Lastly, the microscope reveals in the pseudo- 
podia a very curious circulation of minute solid particles or 
Fig. 6.—Morphology of Foraminifera. a Lagena vulgaris, a monothalamous For- 
aminifer; 4 Miliola (after Schultze), showing the pseudopodia protruded from 
the oral aperture of the shell; c Discorbina (after Schultze), showing the nauti- 
loid shell with foramina in the shell-walls, giving exit to pseudopodia ; @ Sec- 
tion of Nodosaria (after Carpenter); ¢ Wodosaria hispida; f Globigerina bul- 
loides. 
granules, which travel in all directions through the pseudo- 
podial network. Internally, the sarcode-body of the /oramznz- 
Jera exhibits absolutely no structures or definite organs of any 
kind. Even the nucleus and contractile vesicle which occur in 
the Amba are here absent, and the only traces of structure are 
to be found in the existence of scattered granules. 
Simple as is the sarcode-body of the Foraminzfera, it has in 
