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12. P a g u r u s p e d u n c u l . 4 T U S . * Oliv., Encycl. Meth. Ins. 8. p . 847. s p .Z l.
Cancer pedunculatus. Herhst, 3. heft 4. p . 25. taf. 8 \.f ig . 2.
A p e c u lia r c h a r a c te r is tic o f th is sp e c ie s , v iz . th e n e a t w h ite b a n d th a t g irts th e e y e -p c d im n le , is
o b lite r a le d in H e r b s t ’s figure b y th e c a re le s sn e s s o f th e colotire r, who ha s p a ssed th e t in t o v e r it, th o u g h
i t is d is tin c tly in d ic a te d in th e e n g r a v in g , a n d p a r tic u la r ly m e n tio n e d in th e te x t .f
In O liv ie r ’s a c c o u n t o f th is spe c ie s, th re e d e n ta tio n s a r e d e s c r ib e d in th e f ro n t o f th e c a r a p a c e ,
which a r e e x a g g e r a te d in th e fig u re , w h ils t he a lto g e th e r om its th e w h ite zo n e o f th e e y e - s ta lk .
In th e p r e s e n t sp e c im en th e c o lo u r o f th e thorax is w h ite , w itli a s lig h t lila c s ta in in th e m id d le .
'I'he c law s a r e a y e llow ish w hite , c lo u d e d w ith lilac. T h e le f t chela is m uch la rg e r th a n th e r ig h t, the
in n e r m a rg in o f th e ulna is p ro d u c e d in form o f a d e n ta te d c re s t, th e carpus is d e n ta te d ab o v e , an d .
to g e th e r w ith th e manus, is tu b e r c u la te d e x te rn a lly . T h e a n te p e n u ltim a te jo in t s o f th e s e co n d a n d
th ird p a irs o f c law s h a v e two te e th su p e rio rly a t th e ir d is ta l e x t r em i ty ; th e la s t jo in ts a r e e lo n g a te d ,
d e n ta te d su p e rio rly , w ith a lo n g itu d in a l lin e e x te rn a lly , h irsu te , a n d te rm in a te d by sh a rp b la c k c law s .
M o s t o f th e h a irs in th is sp e c ie s h av e a b e a u tifu l g r e e n c o lo u r.
T h e e x te rn a l fo o t-p a lp e h a s th e first jo in t trih e d r a l, w ith th e in f e rn a l m a rg in m in u te ly d e n ta te ,
th e te e th o f a b la c k c o lo u r ; th e a n te r io r m a rg in has a lso th r e e sm a ll te e th , a n d th e se co n d j o i n t is
s im ila rly a rm ed o n th e sam e a s p e c t ; tb e o th e r jo in ts a re s im p ly h ir su te . T h e f a g r u m is n e a r ly as
lo n g a s th e fo o t-p a lp e , th e first jo in t is e n la rg e d , com p re ssed , a n d e x te n d s to th e th ird jo in t o f th e
fo o t-p a lp e .
is albis rubro armillatis, tertiis infra
13. P a g u r u s p i c t u s . n .s.
Pag. parvus, chelis imxgualilnu, digiiis granulatis, sinistra majors; }
lato-hirsutis.
Long. Corp. unc. 1, lin, 9.
T w o sp e c im e n s o f th is b e a u tifu l spe c ie s w e re ta k e n a t O a b u , S a n dw ic h Is le s . T h e thorax is
s lig h tly p u n c ta te , o f a w h ite co lo u r, a n d w ith fa in t in d ic a tio n s o f th e tr id e n ta te c h a r a c te r a t th e
a n te r io r m a rg in . T h e o p h th a lm ic p e d u n c le s a re lo n g , o f a p in k co lo u r, w ith th e s c a le a t th e b a s e o f
a b r ig h t s c a r le t h u e . T h e me sia l a n ten n a e do n o t e x c e e d in le n g th th e g r e a te r c h e la : tb e y a r e o f a
y e llow c o lo u r.
T h e jo in t s o f th e pedipalpus a r e s le n d e r ; i t is n e a r ly e q u a lle d in le n g th b y th e fla g rum , whose
se c o n d j o in t is d ila te d , h a v in g a tr a n s p a r e n t s c a le e x te rn a lly . T h e cheltx a re o b tu s e , o f a b rig h t
y e llow co lo u r, sm o o th , e x c e p t th e d ig its , w h ic li a r e s tu d d e d w ith sm a ll w h ite tu b e r c le s ; th e manus
o f th e rig h t chela is n o tc h e d a t th e u p p e r m a rg in .
* The nervous s^stera of this species consists, as in all annulosa, of ganglions regularly disposed, and brought into
communication by a double nervous chord. The first or cephalic ganglion lies beneath the middle of the anterior margin
of the thorax ; it is square-shaped, and has four lobes faintly indicated ; it gives off first the nerves to the eyes, below
these, nerves to the anlennee, and then two small filaments, that pass down one on each side the stomach, and join a
ganglion which supplies the instrumenta cibaria and hranchiee. The third is a large oblong ganglion, situated at the
base of the cheleB, and extending to the base of the second pair of claws, both of which it supplies. The connecting chords
then proceed separately for a short distance, and join a ganglion smaller than the preceding, which supplies the third
long pair of legs. From its posterior part, this ganglion also gives off three pairs of nerves; the two inferior pairs go to
the fourth and fifth diminutive claws; the remaining pair, which are very minute, are continued along tho concavity of
the liver, partly imbedded in that gland, and when they reach the anus. Join a small ganglion which supplies the claspcrs
at the extremity of the abdomen. The larger nerves evidently arise from the ganglions by a number of separate small
fibrils.
t " Die Augenstiele selbst sind etwas gedrückt, roth, mit einer weissen Binde in der Mhte,” p. 26.
M i .