206 
Hoveclet er omtrent saa langt som de 2 forreste Seg- 
menter tilsammen og stserkt afsmalnende fortil, mod on bred 
Udrandning til hver Side over Basis af 2det Par Folere. 
De mellem begge Par P 0 lere fremskydende Sidelapper er 
i Enden tilspidsede. 
De 4 forreste Par Epimerer er omtrent af Kroppens 
Hoide og tiltagor noget i Storrelse bagtil. Deres nedre 
Rand er jevnt tilrundet. 5te Par er som hos Slsegtens 
0 vnge Arter betydelig storre end de 2 bagerste og har 
den forreste Lap mest udviklet. 
3die Bagkropssegments Sideplader er ikke som hos 
P. megacheir bagtil vinklede. men stumpt tilrundede. 
0inene er forholdsvis smaa, men tydeligt udviklede, 
af oval Form og beliggende nter Hovedets forreste Side- 
hjorner. Deres Pigment er af inork bruidig Farve. 
Folerne er kraftigt udviklede og indbvrdes omtrent af 
samme Storrelse, overgaaende kjendeligt Legemets halve 
Lsengde. Den bagre Rand er paa begge Par forsynet med 
lange og tynde bagudkrummede Borster. lste Par har 
Skaftets lste Led saa langt som Hovedet, de 2 folgende 
indbyrdes af ens Lsengde; Svoben er omtrent halvt saa lang 
som Skaftet og sammensat af 9 Led ; Bisvoben (se Fig. 1 «) 
er sserdeles liden og rudffflentser, 1-leddet og neppe mere 
end '/3 saa lang som Svpbens lste Led. 2det Par bar 
Skaftets 2 ydre Led stserkt forlaengede og Svpben omtrent 
saa lang som Skaftets sidste Led, meget tynd og 8-leddet. 
lste Fodpar (Fig. 1 a) har Haanden af oval Form 
og omtrent saa lang som de 3 foregaaende Led tilsammen, 
med Griberanden kun ufuldstamdigt begrsendset nedad og 
ubevsebnet. 
2det Fodpar er navnlig hos Hannen (Fig. 1 b) sser- 
deles kraftigt udviklet, med Haanden stor og opsvulmet, 
ligesaa lang som alle de ovrige Led tilsammen og af aflang 
oval Form, uden nogen tydeligt begrsendset Griberaud, men 
bagtil besat med flere Rsekker af tildels cilierede Burster. 
Endekloen er sserdeles staerk, leformig og kan slaaes ind 
mod den indre Side af Haanden. 
3die og 4de Fodpar er af den ssedvanlige Bygning. 
De 3 bagerste Fodpar tiltager hurtigt i Lsengde bagtil 
og er temmelig robuste, med pladeformigt udvidet Hofteled 
og kraftig Eudeklo. 
Halefodderne viser den for Shegten cbaraoteristiske 
Bygning. Sidste Par har Stammen temmelig stmrkt for- 
lsenget, hvorimod Grenene er yderst smaa og rudimentsere. 
Halevedhaenget er kort, men tykt, rorfonnigt, uden 
Indsnit. 
Dyrets Farve er hvidagtig, med mere eller mindre 
tydelige brune Plotter og Shatteringer. 
Lsengden af de sterste Individer er 8”™. 
The head has about the length of the 2 foremost 
segments taken together, and tapers rapidly forward. with 
a broad emargination on either side, over the base of the 
2nd pair of antennae. The lateral lobules, projecting between 
both pairs of antennae, are pointed at the extremity. 
The 4 anterior pairs of epimera attain about the height 
of the body, diminishing somewhat in size* posteriorly. Their 
lower margin is evenly rounded. The 5th pair, as in the 
other species of the genus, is considerably larger than the 
2 posterior ones, with the foremost lobe exhibiting greatest 
development. 
The lateral plates of the 3rd abdominal segment are 
not, as in P. megacheir, angular posteriorly, but obtusely 
rounded. 
The eyes are comparatively small, but well developed, 
oval in form, and placed near the antero-lateral corners ot 
the head. Their pigment is a dark-brown. 
The antenna' are powerfully developed, and well-nigh 
equal in size, appreciably exceeding half the body in 
length. The posterior margin in both pairs is furnished 
with long and slender, backward-curving bristles. The 1st 
pair have the 1st joint of the peduncle as long as the head, 
the 2 succeeding ones are equal in length; the flagellum 
is about half as long as the peduncle, and composed of 9 
articulations; the secondary flagellum (see fig. 1 a) occurs 
exceedingly small and rudimentary, uni-articulate and scarcely 
more than one-third as long as the 1st joint of the flagel- 
lum. The 2nd pair have the 2 outer joints of the peduncle 
greatly elongated, and the flagellum equal in length to the 
last joint of the peduncle, very slender, and composed of 
8 articulations. 
The 1st pair of legs (fig. 1 a) have the hand oval in 
form, and about as long as the 3 preceding joints taken 
together, with the palmar margin but incompletely defined 
from below, and wholly unarmed. 
The 2nd pair of legs, more especially in the male 
(fig. 1 b), exhibit a most powerful development, with the 
hand very large and tumid, equalling in length all the 
other joints taken together, and oblongo- ovate in form, 
without any distinctly marked palmar margin, but having 
posteriorly several rows of in part ciliate bristles. The 
terminal claw is strong, falciform, and admits of being bent 
in toward the inner surface of the hand. 
The 3rd and 4th pair of legs exhibit the usual structure. 
The 3 hindmost pairs of legs increase rapidly in length 
posteriorly, and are somewhat robust, with the basal joint 
lamelliform-dilated, and have a powerful terminal claw. 
The caudal stylets exhibit the structure characteristic 
ol the genus. The stem of the last pair is rather elongate, 
whereas the branches are remarkably small, and rudimentary. 
The telson is short but thick, tubular, without any 
incision. 
Colour of animal whitish, with more or less distinct 
brown spots and shadings. 
Length of the largest individuals reaching 8 m “. 
