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mp.<br />
Strn.<br />
9-P 5 -<br />
$juv.<br />
cfad.<br />
cfad*.<br />
cf C.<br />
cfUrs.<br />
cflarv.<br />
area, on the sides of which project<br />
the single pair of incubatory plates,<br />
and behind the latter the long<br />
occluding folds of the incubatory<br />
cavities.<br />
9Ventr. ar. Anterior part of ventral face,<br />
more highly magnified. On left<br />
side the legs and coxal plates are<br />
removed, in order to show more<br />
distinctly the underlying left incu-<br />
batory plate.<br />
Maxilliped.<br />
Sternal plate.<br />
Leg of 5th pair.<br />
Very young female, with attached<br />
larval<br />
views.<br />
male; dorsal and ventral<br />
Adult male, dorsal view.<br />
Same, viewed from left side.<br />
Same, cephalon and 1st pedigerous<br />
segment from below.<br />
Same, extremity of tail, with tho<br />
rudimentary uropoda.<br />
Young male in last larval stage;<br />
doisal view.<br />
cflarv. C. Same, cephalon and 1st pedigerous<br />
segment from below (right inferior<br />
antenna and left 1st leg omitted).<br />
cflarv.p 6 . Same, leg of tith pair.<br />
C? iarv.p 7 . Same, leg of 7th pair.<br />
cflarv.Urs. Same, extremity of tail, dorsal<br />
view.<br />
PI. 97.<br />
Cydroniseus eydridinae,<br />
G. O. Sars.<br />
Central fig. A female specimen of Cypridina<br />
norvegica infested with this parasite,<br />
viewed from right side, the right<br />
valve being removed. Besides the<br />
fully grown female, occupying the<br />
incubatory cavity of the host,<br />
another very young female is seen<br />
attached laterally to the skin of<br />
$ad.<br />
the Cypridina.<br />
Adult; ovigerous female, dorsal and<br />
ventral views, magnified to the same<br />
tub. an.<br />
scale as the preceding figure.<br />
Same, anal tubercles, highly magnified.<br />
9 1 .<br />
9 2 -<br />
3 *<br />
Femal larva, immediately after it<br />
has attached itself to the host;<br />
dorsal view.<br />
attached female<br />
Another recently<br />
larva, which is about to shead its<br />
skin. Within the latter the characteristic<br />
fusiform body of the next<br />
stage is distinctly traced.<br />
Young female in the 1st postlarval<br />
stage, ventral view.<br />
Another female in same stage,<br />
viewed from right side. In both<br />
specimens the neck is still covered<br />
by some of the anterior empty<br />
larval segments, with their appendages<br />
in a more or less complete<br />
269<br />
9juv.<br />
9 4 - Somewhat<br />
9 5 - Immature<br />
9 6 . A<br />
state, whereas the head with its<br />
root-like filaments is deeply buried<br />
into the skin of the host.<br />
Anterior extremity of body in about<br />
this stage, viewed from below (only<br />
the bases of the root-like filaments<br />
drawn).<br />
more<br />
dorsal view.<br />
advanced stage,<br />
female, after the neck<br />
has been converted to the affixing<br />
string viewed from ; right side.<br />
somewhat more advanced female<br />
with attached male, viewed from<br />
right side.<br />
PL 98.<br />
1. Cyproniscus eypndinae (contin.)<br />
C.<br />
cox.<br />
p 3 .<br />
p 7 .<br />
pip.<br />
Urs.<br />
Adult male, dorsal view.<br />
Same, anterior part of body from<br />
below (left inferior antenna and the<br />
2 anterior legs on same side not<br />
drawn).<br />
A coxal plate.<br />
Leg of 3rd pair.<br />
Leg of 7th pair.<br />
Pleopod.<br />
Extremity of tail, dorsal view.<br />
2. Cryptothir balani (Sp. Bate).<br />
9- Female (not fully grown), dorsal<br />
view.<br />
C. Anterior larval part of body, ventral<br />
view.<br />
3. Aseoniseus simplex, G. 0. Sars.<br />
$ad. Adult female with attached larval<br />
skin, viewed from left side.<br />
9juv.<br />
cf .<br />
cf C.<br />
cfp 3 .<br />
cf p 7 .<br />
cf Urs.<br />
Young female, likewise with attached<br />
larval skin, viewed from right side.<br />
Adult male, dorsal view.<br />
Same, cephalon and 1st pedigerous<br />
segment from below (left inferior<br />
antennae and right 1st leg not<br />
drawn).<br />
Same, leg of 3rd pair.<br />
Same, leg of 7th pair.<br />
Same, extremity of tail dorsal view.<br />
PI. 99.<br />
Clypeoniseus Hanseni, Giard & Bonn.<br />
9- Adult female, dorsal and ventral<br />
views.<br />
an. t. Caudal process (anal tubercle) of<br />
same, highly magnified.<br />
cf . cf C.<br />
Male, dorsal view.<br />
Same, anterior part of body from<br />
below (left inferior antenna and<br />
right 1st and 2nd legs not drawn).
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