192 
Fam. Leucothoidse. 
Gen. 1 . Lilljetooi'o-ia., Sp. Bate, 1862. 
Catal. of Amphip. Brit. Mus. 
58. Lilljeborgia aeqvicornis, G. 0. Sars, n. sp. 
(PI. XYI, Fig. 2, a). 
Lilljeborgia mqmcornis, G. 0. Sars, Prodromus descript. Crust. & Pyc- 
nog. etc., No. 103. 
Artscharaeteristik. Legemet sammentrykt, men ikke 
kj0let, med en enkelt meget liden dorsal Torn pa, a 2det 
Bagkropssegment. De 4 forreste Par Epimerer temmelig 
store, late Par nedentil udvidet og bredt afrundet. 3die 
Bagkropssegments Sideplader bagtil udtruknc i et skarpt 
Hjorne. Ingen tydelige 0ine. Polerne korte, omtrent ind- 
byrdes af ens Lsengde : Iste Par med Skattets Iste Led 
laengere end de 2 pvrige tilsammen, Svpben af Skaftets 
Lsengde, Bisvoben halvt saa lang. De 2 forreste Fodpar 
kraftigt udviklede, med store sammentrykte Haender; Iste 
Par bos Hunnen af samme Bygning som 2det Par, hos 
Hannen derimod meget forskjelligt, med Haanden enormt 
udviklet, Griberanden dybt udrandet og bagtil begnendset 
af en tiianguliert tilspidset Flig. De 3 bagerste Fodpar 
kraftigere end de 2 foregaaende, tiltagende noget i Lsengde 
bagtil, med Hofteleddet pladeformigt, sidste Led koniskt 
tilspidset og Endekloen meget liden. Sidste Par Halefodder 
med begge Grene af ens Lsengde. Halevedhaenget dybt 
kloftet, med Endefligene besatte med stserke Torner. Far- 
ven hvidgul. Lsengden 6 mm . 
Findesteder. Stat. 31, 224, 273. 
Bemserkninger. Denne Art er strax kjendelig fra 
de 2 Pvrige bekjendte red Mangelen af tydelige 0ine, red 
at kun en enkelt dorsal Torn er tilstede,' red F (denies lige- 
lige Udvikling, endelig ved Iste Fodpars eiendommelige 
Bygning hos Hannen. 
Beskrivelse. Legemet er (se PI. XYI, Fig. 2) tem- 
naelig staerkt sammentrykt fra Siderne, men med rnnd, ikke 
kjolet liyg. 
Hovedet er forholdsvis lidet, og dets Sidedele dsekkes 
lor en stor Del af Iste Par Epimerer. 
Af Segmenteme forlamger kun et, nemlig 2det Bag- 
kropssegment, sig i en liden dorsal Torn; alle de pvrige 
er ubevaebnede. 
D<‘ 4 forreste Par Epimerer er forholdsvis store, nscsten 
dobbelt saa boie som Kroppen. Iste Par er nedentil staerkt 
udvidet og bredt afrundet, daekkende en Del af Hovedets 
Sider tilligemed Munddelene. 4de Par er kun lidet storre 
end Iste og viser oventil i den bagre Kant en svag Ud- 
randning. 
Fam. Leucothoidse. 
Gen. 1 . lAlljeDorgia, Sp. Bate. 1862. 
Catal. of Amphip. Brit. Mus. 
58. Lilljeborgia aeqvicornis, G. O. Sars, n. sp. 
(PL XVI, fig. 2, a). 
Lilljeborgia aiqvicornis, G. 0. Sars, Prodromus descript. Crust. & Pyc- 
nog, etc., No. 103. 
Specific Character. — Body compressed, but not 
keeled, with a single, exceedingly small dorsal spine on 2nd 
abdominal segment. The 4 anterior pairs of epimera rather 
large, 1st pair dilated below and broadly rounded. Lateral 
plates of 3rd abdominal segment drawn out posteriorly to 
a sharp corner, No distinct eyes. Antennae short, about 
equal in length; 1st pair with 1st joint of peduncle longer 
than both the others taken together; flagellum uniform in 
length with peduncle, secondary flagellum half as long. 
The 2 anterior pairs of legs powerfully developed, with 
large, compressed hands; 1st pair, in female, as regards 
structure, similar to 2nd, in male widely different, the hand 
being enormously developed, with palmar margin deeply 
emarginate and posteriorly defined by a triangular- acute 
lappet. The 3 hindmost pairs of legs more powerfully de- 
veloped than the 2 preceding ones, increasing somewhat in 
length posteriorly, with basal joint lamelliform, last joint 
conic-acute, and terminal claw exceedingly small. Last 
pair of caudal stylets with the 2 branches equal in length. 
Telson deeply cleft, with terminal lappets bearing strong 
spines. Colour whitish-yellow. Length 6’"”’. 
Locality. — Stats. 31, 224, 272. 
Remarks. — This animal differs conspicuously from 
the 2 other known species by its want of distinctly devel- 
oped eyes, by the presence of only one dorsal spine, by the 
uniform development of the antennas, and finally by the 
peculiar structure of the 1st pair of legs in the male. 
Description. — The body (see PL XYI, fig. 2) rather 
strongly compressed from the sides, but with round, not 
carinated back. 
The head comparatively small, and its lateral parts 
to a great extent overlapped by the 1st pair of epimera. 
Of the segments, only one, viz. the 2nd abdominal 
segment, is produced to a small dorsal spine; the others 
are all unarmed. 
The 1 anterior pairs of epimera are comparatively 
large 1 , almost twice as high as the body. The 1st pair are 
greatly expanded below, and broadly rounded, overlapping 
part of the sides of the head, along with the oral appen- 
dages. The 4th pair are but very little larger than the 
1st, and exhibit above on the posterior margin a slight 
emargination. 
