The E. spirula of certain Brazilian monkeys and of the Barbary ape bears a strong resemblance to the species from the hog.
A series of Chambers joining each other, as in Nautilus, spirula, &c.
The latter is partly straight and partly convoluted, nearly as in spirula.
After a gale, on looking amongst the wrack cast up by the highest waves, large numbers of our spirula will be found.
They originate at the aboral extremity where they remain in spirula (fig. 18).
In places in New Zealand, and elsewhere, large fossil deposits of spirula peroni occur.
A mollusk whose shell is cast upon the shore by thousands, but the animal of which is very rare, is the spirula.
In the living Dibranchiata other than spirula the phragmacone and rostrum have become very rudimentary.