1L4 
Underlaeben (Fig. 8) har Encleloberne fint cilierede 
saavel i den ydre soin indre Kant. 
Kindbakkerne (Fig. 9) er meget kraftigt byggede og 
har de fra den forreste Del af Endepartiet udgaaende tan- 
dede Fortsatser forholdsvis stmrkere udviklede end hos Arc- 
turus samt af en mork bransort Farve. De imellem disse 
og Tyggeknuden fsestede secundsere Plader er ligeledes noget 
forskjelligt formede, soni vil sees ved en Sammenligning af 
de respective Figurer. 
De 2 Par Kjtever (Fig. 10 og 11) er nsesten noiagtigt 
af samnle Udseende soin hos Areturus. 
Kjievefodderne (Fig. 12) har Palpens Led forholdsvis 
bredere og mere pladedannede. Epignathen er af en lig- 
nende Form sorn hos Areturus, men har hole den ydre 
Kant fint cilieret. Basalpladen er noget mindre og smalere 
samt uden Burster. 
Af Fodderne er de 3 forreste Par regte Griberedskaber 
og derfor i Regelen (se Fig. 2) slaaede ind under For- 
kroppen, saa at de, naar Dyret sees ovenlra (Fig. 1), ial- 
mindelighed er ganske skjulte. De er alle af fuldkommen 
ons Udseende og saerdeles kraftigt byggede. Af Leddene 
er (se Fig. 13 og 14) 3die og 4de meget korte og af tem- 
melig uregelmmssig Form samt forbundne med hinanden paa 
en eiendommelig Maade, idet hint ligesom omfatter dette. 
5te Led er stort og bredt, af oval Form og danner i For- 
bindelse med den kraftige Endeklo (Dactylus) en Slags 
Gribehaand. 
De 4 bagerste Fodpar er regie Gangfodder og rager 
derfor under Dyrets Bevsegelser mere ud til Siderne (se 
Fig. 1 og 2). De tiltager successivt i Laengde bagtil og 
bestaar (se Fig. 15 og 16) ligesom de forreste Par af 5 
Led foruden Endekloen; men alle Led er her simple og 
det sidste ikke udviklet til nogen Gribehaand. Alle disse 
Fodpar er temmelig rigeligt borstebesatte i Kanterne. 
Brystposen var hos et Par af de indsamlede Exem- 
plarer fuldt udviklet og indeholdt talrige gronagtigt farvede 
Afg. Den sammenssettes som hos de ovrige til denne Fa- 
milie horende Former af 4 Par brede og gjenneinsigtige 
Plader, der udspringer fra Basis af 2det — -5te Fodpar. 
Bagkropslemmerne er (se Fig. 2) som hos foregaaende 
Familie nedad dmkkede af et Par voluminose klapformige 
Organer, der forestiller de modiliceredo Halovedhmng. Fjernes 
disse, bemaerkes (se Fig. 17) 5 vel udviklede Buglemiuer, 
der mere eller mindre fuldstaendigt daekker hinanden ind- 
byrdes. 
De 2 f'orste Par (Fig. 1 9 og 20) er ligesom hos Arc- 
turns udviklede til Sonuneredskaber, men skiller sig ved 
betydelig kortere Koddel og bredere, ovale Endeplader, 
hvoraf den indre er kjendelig stdrre end den ydre. Begge 
Plader er i Kanterne forsynede med talrige cilierede Bur- 
ster, men som er forholdsvis betydelig kortere end hos 
Areturus. 
The labium (fig. 8) has the terminal lobes finely ci- 
liated, both along the outer and the inner edge. 
The mandibles (fig. 9) are very powerful in structure, 
and the dentate projections jutting forth from the anterior 
part of the terminal region, relatively stronger than in Arc- 
turus, as also of a dark brownish-black colour. The sec- 
ondary plates, too, attached between the said projections 
and the molar protuberance, have likewise a somewhat de- 
viating form, as will appear on comparing the respective 
figures. 
The 2 pairs of maxilla; (figs. 10, 11) have almost ex- 
actly the same appearance as in Areturus. 
The maxillipeds (fig. 12) have the joints of the palp 
comparatively broader and more lamelliform. The epignath 
exhibits a similar form to that in Areturus, but has the 
whole of the outer margin finely ciliated. The basal plate 
is somewhat smaller and narrower, as also without bristles. 
Of the legs, the 3 anterior pairs are true organs of 
prey, and hence, as a rule (see fig. 2), bent in under the 
body, so that, when the animal is viewed from above 
(fig. 1), they are generally quite concealed. They all pre- 
sent a perfectly uniform appearance, and are exceedingly 
powerful in structure. Of the joints (see figs. 13, 14), 
the 3rd and 4th are very short and somewhat irregular in 
form, as also connected together in a peculiar manner, the 
former encompassing, as it were, the latter. The 5th joint 
is large and broad, oval in form, and constitutes, in con- 
junction with the terminal claw (dactylus), a kind of pre- 
hensile hand. 
The 4 posterior pairs of legs are true pereiopoda, 
and hence, during the movements of the animal, project 
somewhat farther out toward the sides (see figs. 1, 2). They 
increase successively in length posteriorly, and consist (see 
figs. 15, 16), as is the case with the anterior pairs, of 5 
joints, exclusive of the terminal claw; but all these joints 
are simple, nor is the last developed to a prehensile hand. 
These pairs of legs are all of them rather abundantly 
furnished with bristles along the edges. 
The marsupium, in one or two of the specimens taken, 
was fully developed, containing numerous greenish coloured 
eggs. It is composed, as in the other forms belonging to 
this family, of 4 pairs of broad and translucent plates, spring- 
ing from the base of the 2nd up to the 5th pair of legs. 
The abdominal limbs (see fig. 2) are, as in the pre- 
ceding family, covered below by a pair of voluminous val- 
vular organs, representing the modified caudal appendages. 
On removing these organs, are observed (see fig. 17) 5 
pairs of well developed ventral appendages, the one covering 
more or less completely the other. 
The 2 first pairs (tigs. 19, 20) are, as in Areturus, 
developed to natatory organs, but differ in the basal part 
being considerably shorter, as also in their having broader 
ovate terminal plates, of which the inner is appreciably 
larger than the outer. Both plates are furnished along the 
edges with numerous ciliated bristles, which, however, are 
relatively much shorter than in Areturus. 
