This historic book may have numerous typos and missing text.
Purchasers can download a free scanned copy of the original book
(without typos) from the publisher. Not indexed. Not illustrated.
1882 Excerpt: ...antenna, and its tip carries two long simple hairs
and two much smaller hairs. In the last Nauplius stage, or
meta-Nauplius (fig. 26) the joints have disappeared; it is only
about two-thirds as long as the body, and it carries only the two
long hairs at the tip. In the first Protozoea stage (fig. 27, A) it
is made up of a long cylindrical basal joint with a few short
hairs, and a much shorter terminal joint, which is pointed, and
carries the two long hairs as before. The structure of the
appendage does not change until the end of the Zo.ea series, and it
is shown at A in figs. 34, 42, 43, and 44. At the first Schizopod
stage (fig. 50, A) the basal portion is made up of one very long
cylindrical joint, with a hook near its swollen base, and a much
shorter distal joint. Three long, two-jointed, plumose hairs spring
from the inner edge of the second joint, and three more from the
inner edge of the distal third of the basal joint. The terminal
portion has lost the two long hairs which it had at earlier stages.
In the last Schizopod stage (fig. 54, A, and fig. 56) the distal
third of the basal joint has separated off as a distinct joint
(fig. 56, a) upon which the three hairs are situated. The ear has
made its appearance, behind the hook, on the swollen base of the
first joint. The terminal joint (4) carries three sensory hairs,
which arise upon its outer surface about half way between its tip
and base. In the Mastigopus stage (fig. 60) the terminal joint has
lengthened to form a twojointed flagellum, and the appendage is
more than twice as long as the eye. In the young specimens which
have attained to the adult form (fig. 61, A) the appendage is about
as long as the carapace and neck, and in the adult (fig. 66, A) the
flagellum (2) is about as long as the basal...
|Country of origin:
William Keith Brooks
||246 x 189 x 2mm (L x W x T)
||Paperback - Trade
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